Ticket #1534: fix-1534.darcs.patch

1 patch for repository davidsarah@dev.allmydata.org:/home/darcs/tahoe/trunk:

Wed Sep 14 15:39:47 BST 2011  david-sarah@jacaranda.org
  * mutable/layout.py: improve confusing documentation of layout. fixes #1534

New patches:

[mutable/layout.py: improve confusing documentation of layout. fixes #1534
david-sarah@jacaranda.org**20110914143947
 Ignore-this: c5fbd3809ee3f7fc2b46cd23dad6b1c0
] {
hunk ./src/allmydata/mutable/layout.py 12
 from zope.interface import implements
 
 
-# These strings describe the format of the packed structs they help process
+# These strings describe the format of the packed structs they help process.
 # Here's what they mean:
 #
 #  PREFIX:
hunk ./src/allmydata/mutable/layout.py 17
 #    >: Big-endian byte order; the most significant byte is first (leftmost).
-#    B: The version information; an 8 bit version identifier. Stored as
-#       an unsigned char. This is currently 00 00 00 00; our modifications
-#       will turn it into 00 00 00 01.
+#    B: The container version information; stored as an unsigned 8-bit integer.
+#       This is currently either SDMF_VERSION or MDMF_VERSION.
 #    Q: The sequence number; this is sort of like a revision history for
 #       mutable files; they start at 1 and increase as they are changed after
hunk ./src/allmydata/mutable/layout.py 21
-#       being uploaded. Stored as an unsigned long long, which is 8 bytes in
-#       length.
+#       being uploaded. Stored as an unsigned 64-bit integer.
 #  32s: The root hash of the share hash tree. We use sha-256d, so we use 32 
hunk ./src/allmydata/mutable/layout.py 23
-#       characters = 32 bytes to store the value.
-#  16s: The salt for the readkey. This is a 16-byte random value, stored as
-#       16 characters.
+#       bytes to store the value.
+#  16s: The salt for the readkey. This is a 16-byte random value.
 #
 #  SIGNED_PREFIX additions, things that are covered by the signature:
hunk ./src/allmydata/mutable/layout.py 27
-#    B: The "k" encoding parameter. We store this as an 8-bit character, 
-#       which is convenient because our erasure coding scheme cannot 
-#       encode if you ask for more than 255 pieces.
-#    B: The "N" encoding parameter. Stored as an 8-bit character for the 
-#       same reasons as above.
-#    Q: The segment size of the uploaded file. This will essentially be the
-#       length of the file in SDMF. An unsigned long long, so we can store 
-#       files of quite large size.
-#    Q: The data length of the uploaded file. Modulo padding, this will be
-#       the same of the data length field. Like the data length field, it is
-#       an unsigned long long and can be quite large.
+#    B: The "k" encoding parameter. We store this as an unsigned 8-bit
+#       integer, since our erasure coding scheme cannot encode to more than
+#       255 pieces.
+#    B: The "N" encoding parameter. Stored as an unsigned 8-bit integer for
+#       the same reason as above.
+#    Q: The segment size of the uploaded file. This is an unsigned 64-bit
+#       integer, to allow handling large segments and files. For SDMF the
+#       segment size is the data length plus padding; for MDMF it can be
+#       smaller.
+#    Q: The data length of the uploaded file. Like the segment size field,
+#       it is an unsigned 64-bit integer.
 #
 #   HEADER additions:
hunk ./src/allmydata/mutable/layout.py 40
-#     L: The offset of the signature of this. An unsigned long.
-#     L: The offset of the share hash chain. An unsigned long.
-#     L: The offset of the block hash tree. An unsigned long.
-#     L: The offset of the share data. An unsigned long.
-#     Q: The offset of the encrypted private key. An unsigned long long, to
-#        account for the possibility of a lot of share data.
-#     Q: The offset of the EOF. An unsigned long long, to account for the
-#        possibility of a lot of share data.
+#     L: The offset of the signature. An unsigned 32-bit integer.
+#     L: The offset of the share hash chain. An unsigned 32-bit integer.
+#     L: The offset of the block hash tree. An unsigned 32-bit integer.
+#     L: The offset of the share data. An unsigned 32-bit integer.
+#     Q: The offset of the encrypted private key. An unsigned 64-bit integer,
+#        to account for the possibility of a lot of share data.
+#     Q: The offset of the EOF. An unsigned 64-bit integer, to account for
+#        the possibility of a lot of share data.
 # 
 #  After all of these, we have the following:
 #    - The verification key: Occupies the space between the end of the header
hunk ./src/allmydata/mutable/layout.py 65
 #  Given this, we may need to check to see how many bytes a reasonably sized
 #  block hash tree will take up.
 
-PREFIX = ">BQ32s16s" # each version has a different prefix
+PREFIX = ">BQ32s16s" # each version may have a different prefix
 SIGNED_PREFIX = ">BQ32s16s BBQQ" # this is covered by the signature
 SIGNED_PREFIX_LENGTH = struct.calcsize(SIGNED_PREFIX)
 HEADER = ">BQ32s16s BBQQ LLLLQQ" # includes offsets
hunk ./src/allmydata/mutable/layout.py 73
 OFFSETS = ">LLLLQQ"
 OFFSETS_LENGTH = struct.calcsize(OFFSETS)
 
-# These are still used for some tests.
+
+# These are still used for some tests of SDMF files.
 def unpack_header(data):
     o = {}
     (version,
}

Context:

[docs: insert a newline at the beginning of known_issues.rst to see if this makes it render more nicely in trac
zooko@zooko.com**20110914064728
 Ignore-this: aca15190fa22083c5d4114d3965f5d65
] 
[docs: remove the coding: utf-8 declaration at the to of known_issues.rst, since the trac rendering doesn't hide it
zooko@zooko.com**20110914055713
 Ignore-this: 941ed32f83ead377171aa7a6bd198fcf
] 
[docs: more cleanup of known_issues.rst -- now it passes "rst2html --verbose" without comment
zooko@zooko.com**20110914055419
 Ignore-this: 5505b3d76934bd97d0312cc59ed53879
] 
[docs: more formatting improvements to known_issues.rst
zooko@zooko.com**20110914051639
 Ignore-this: 9ae9230ec9a38a312cbacaf370826691
] 
[docs: reformatting of known_issues.rst
zooko@zooko.com**20110914050240
 Ignore-this: b8be0375079fb478be9d07500f9aaa87
] 
[docs: fix formatting error in docs/known_issues.rst
zooko@zooko.com**20110914045909
 Ignore-this: f73fe74ad2b9e655aa0c6075acced15a
] 
[merge Tahoe-LAFS v1.8.3 release announcement with trunk
zooko@zooko.com**20110913210544
 Ignore-this: 163f2c3ddacca387d7308e4b9332516e
] 
[docs: release notes for Tahoe-LAFS v1.8.3
zooko@zooko.com**20110913165826
 Ignore-this: 84223604985b14733a956d2fbaeb4e9f
] 
[tests: bump up the timeout in this test that fails on FreeStorm's CentOS in order to see if it is just very slow
zooko@zooko.com**20110913024255
 Ignore-this: 6a86d691e878cec583722faad06fb8e4
] 
[interfaces: document that the 'fills-holes-with-zero-bytes' key should be used to detect whether a storage server has that behavior. refs #1528
david-sarah@jacaranda.org**20110913002843
 Ignore-this: 1a00a6029d40f6792af48c5578c1fd69
] 
[CREDITS: more CREDITS for Kevan and David-Sarah
zooko@zooko.com**20110912223357
 Ignore-this: 4ea8f0d6f2918171d2f5359c25ad1ada
] 
[merge NEWS about the mutable file bounds fixes with NEWS about work-in-progress
zooko@zooko.com**20110913205521
 Ignore-this: 4289a4225f848d6ae6860dd39bc92fa8
] 
[doc: add NEWS item about fixes to potential palimpsest issues in mutable files
zooko@zooko.com**20110912223329
 Ignore-this: 9d63c95ddf95c7d5453c94a1ba4d406a
 ref. #1528
] 
[merge the NEWS about the security fix (#1528) with the work-in-progress NEWS
zooko@zooko.com**20110913205153
 Ignore-this: 88e88a2ad140238c62010cf7c66953fc
] 
[doc: add NEWS entry about the issue which allows unauthorized deletion of shares
zooko@zooko.com**20110912223246
 Ignore-this: 77e06d09103d2ef6bb51ea3e5d6e80b0
 ref. #1528
] 
[doc: add entry in known_issues.rst about the issue which allows unauthorized deletion of shares
zooko@zooko.com**20110912223135
 Ignore-this: b26c6ea96b6c8740b93da1f602b5a4cd
 ref. #1528
] 
[storage: more paranoid handling of bounds and palimpsests in mutable share files
zooko@zooko.com**20110912222655
 Ignore-this: a20782fa423779ee851ea086901e1507
 * storage server ignores requests to extend shares by sending a new_length
 * storage server fills exposed holes (created by sending a write vector whose offset begins after the end of the current data) with 0 to avoid "palimpsest" exposure of previous contents
 * storage server zeroes out lease info at the old location when moving it to a new location
 ref. #1528
] 
[storage: test that the storage server ignores requests to extend shares by sending a new_length, and that the storage server fills exposed holes with 0 to avoid "palimpsest" exposure of previous contents
zooko@zooko.com**20110912222554
 Ignore-this: 61ebd7b11250963efdf5b1734a35271
 ref. #1528
] 
[immutable: prevent clients from reading past the end of share data, which would allow them to learn the cancellation secret
zooko@zooko.com**20110912222458
 Ignore-this: da1ebd31433ea052087b75b2e3480c25
 Declare explicitly that we prevent this problem in the server's version dict.
 fixes #1528 (there are two patches that are each a sufficient fix to #1528 and this is one of them)
] 
[storage: remove the storage server's "remote_cancel_lease" function
zooko@zooko.com**20110912222331
 Ignore-this: 1c32dee50e0981408576daffad648c50
 We're removing this function because it is currently unused, because it is dangerous, and because the bug described in #1528 leaks the cancellation secret, which allows anyone who knows a file's storage index to abuse this function to delete shares of that file.
 fixes #1528 (there are two patches that are each a sufficient fix to #1528 and this is one of them)
] 
[storage: test that the storage server does *not* have a "remote_cancel_lease" function
zooko@zooko.com**20110912222324
 Ignore-this: 21c652009704652d35f34651f98dd403
 We're removing this function because it is currently unused, because it is dangerous, and because the bug described in #1528 leaks the cancellation secret, which allows anyone who knows a file's storage index to abuse this function to delete shares of that file.
 ref. #1528
] 
[immutable: test whether the server allows clients to read past the end of share data, which would allow them to learn the cancellation secret
zooko@zooko.com**20110912221201
 Ignore-this: 376e47b346c713d37096531491176349
 Also test whether the server explicitly declares that it prevents this problem.
 ref #1528
] 
[Retrieve._activate_enough_peers: rewrite Verify logic
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: 9367c11e1eacbf025f75ce034030d717
] 
[Retrieve: implement/test stopProducing
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: 47b2c3df7dc69835e0a066ca12e3c178
] 
[move DownloadStopped from download.common to interfaces
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: 8572acd3bb16e50341dbed8eb1d90a50
] 
[retrieve.py: remove vestigal self._validated_readers
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: faab2ec14e314a53a2ffb714de626e2d
] 
[Retrieve: rewrite flow-control: use a top-level loop() to catch all errors
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: e162d2cd53b3d3144fc6bc757e2c7714
 
 This ought to close the potential for dropped errors and hanging downloads.
 Verify needs to be examined, I may have broken it, although all tests pass.
] 
[Retrieve: merge _validate_active_prefixes into _add_active_peers
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: d3ead31e17e69394ae7058eeb5beaf4c
] 
[Retrieve: remove the initial prefix-is-still-good check
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: da66ee51c894eaa4e862e2dffb458acc
 
 This check needs to be done with each fetch from the storage server, to
 detect when someone has changed the share (i.e. our servermap goes stale).
 Doing it just once at the beginning of retrieve isn't enough: a write might
 occur after the first segment but before the second, etc.
 
 _try_to_validate_prefix() was not removed: it will be used by the future
 check-with-each-fetch code.
 
 test_mutable.Roundtrip.test_corrupt_all_seqnum_late was disabled, since it
 fails until this check is brought back. (the corruption it applies only
 touches the prefix, not the block data, so the check-less retrieve actually
 tolerates it). Don't forget to re-enable it once the check is brought back.
] 
[MDMFSlotReadProxy: remove the queue
Brian Warner <warner@lothar.com>**20110909181150
 Ignore-this: 96673cb8dda7a87a423de2f4897d66d2
 
 This is a neat trick to reduce Foolscap overhead, but the need for an
 explicit flush() complicates the Retrieve path and makes it prone to
 lost-progress bugs.
 
 Also change test_mutable.FakeStorageServer to tolerate multiple reads of the
 same share in a row, a limitation exposed by turning off the queue.
] 
[rearrange Retrieve: first step, shouldn't change order of execution
Brian Warner <warner@lothar.com>**20110909181149
 Ignore-this: e3006368bfd2802b82ea45c52409e8d6
] 
[CLI: test_cli.py -- remove an unnecessary call in test_mkdir_mutable_type. refs #1527
david-sarah@jacaranda.org**20110906183730
 Ignore-this: 122e2ffbee84861c32eda766a57759cf
] 
[CLI: improve test for 'tahoe mkdir --mutable-type='. refs #1527
david-sarah@jacaranda.org**20110906183020
 Ignore-this: f1d4598e6c536f0a2b15050b3bc0ef9d
] 
[CLI: make the --mutable-type option value for 'tahoe put' and 'tahoe mkdir' case-insensitive, and change --help for these commands accordingly. fixes #1527
david-sarah@jacaranda.org**20110905020922
 Ignore-this: 75a6df0a2df9c467d8c010579e9a024e
] 
[cli: make --mutable-type imply --mutable in 'tahoe put'
Kevan Carstensen <kevan@isnotajoke.com>**20110903190920
 Ignore-this: 23336d3c43b2a9554e40c2a11c675e93
] 
[SFTP: add a comment about a subtle interaction between OverwriteableFileConsumer and GeneralSFTPFile, and test the case it is commenting on.
david-sarah@jacaranda.org**20110903222304
 Ignore-this: 980c61d4dd0119337f1463a69aeebaf0
] 
[improve the storage/mutable.py asserts even more
warner@lothar.com**20110901160543
 Ignore-this: 5b2b13c49bc4034f96e6e3aaaa9a9946
] 
[storage/mutable.py: special characters in struct.foo arguments indicate standard as opposed to native sizes, we should be using these characters in these asserts
wilcoxjg@gmail.com**20110901084144
 Ignore-this: 28ace2b2678642e4d7269ddab8c67f30
] 
[test_mutable.Version: consolidate some tests, reduce runtime from 19s to 15s
warner@lothar.com**20110831050451
 Ignore-this: 64815284d9e536f8f3798b5f44cf580c
] 
[mutable/retrieve: handle the case where self._read_length is 0.
Kevan Carstensen <kevan@isnotajoke.com>**20110830210141
 Ignore-this: fceafbe485851ca53f2774e5a4fd8d30
 
 Note that the downloader will still fetch a segment for a zero-length
 read, which is wasteful. Fixing that isn't specifically required to fix
 #1512, but it should probably be fixed before 1.9.
] 
[NEWS: added summary of all changes since 1.8.2. Needs editing.
Brian Warner <warner@lothar.com>**20110830163205
 Ignore-this: 273899b37a899fc6919b74572454b8b2
] 
[test_mutable.Update: only upload the files needed for each test. refs #1500
Brian Warner <warner@lothar.com>**20110829072717
 Ignore-this: 4d2ab4c7523af9054af7ecca9c3d9dc7
 
 This first step shaves 15% off the runtime: from 139s to 119s on my laptop.
 It also fixes a couple of places where a Deferred was being dropped, which
 would cause two tests to run in parallel and also confuse error reporting.
] 
[Let Uploader retain History instead of passing it into upload(). Fixes #1079.
Brian Warner <warner@lothar.com>**20110829063246
 Ignore-this: 3902c58ec12bd4b2d876806248e19f17
 
 This consistently records all immutable uploads in the Recent Uploads And
 Downloads page, regardless of code path. Previously, certain webapi upload
 operations (like PUT /uri/$DIRCAP/newchildname) failed to pass the History
 object and were left out.
] 
[Fix mutable publish/retrieve timing status displays. Fixes #1505.
Brian Warner <warner@lothar.com>**20110828232221
 Ignore-this: 4080ce065cf481b2180fd711c9772dd6
 
 publish:
 * encrypt and encode times are cumulative, not just current-segment
 
 retrieve:
 * same for decrypt and decode times
 * update "current status" to include segment number
 * set status to Finished/Failed when download is complete
 * set progress to 1.0 when complete
 
 More improvements to consider:
 * progress is currently 0% or 100%: should calculate how many segments are
   involved (remembering retrieve can be less than the whole file) and set it
   to a fraction
 * "fetch" time is fuzzy: what we want is to know how much of the delay is not
   our own fault, but since we do decode/decrypt work while waiting for more
   shares, it's not straightforward
] 
[Teach 'tahoe debug catalog-shares about MDMF. Closes #1507.
Brian Warner <warner@lothar.com>**20110828080931
 Ignore-this: 56ef2951db1a648353d7daac6a04c7d1
] 
[debug.py: remove some dead comments
Brian Warner <warner@lothar.com>**20110828074556
 Ignore-this: 40e74040dd4d14fd2f4e4baaae506b31
] 
[hush pyflakes
Brian Warner <warner@lothar.com>**20110828074254
 Ignore-this: bef9d537a969fa82fe4decc4ba2acb09
] 
[MutableFileNode.set_downloader_hints: never depend upon order of dict.values()
Brian Warner <warner@lothar.com>**20110828074103
 Ignore-this: caaf1aa518dbdde4d797b7f335230faa
 
 The old code was calculating the "extension parameters" (a list) from the
 downloader hints (a dictionary) with hints.values(), which is not stable, and
 would result in corrupted filecaps (with the 'k' and 'segsize' hints
 occasionally swapped). The new code always uses [k,segsize].
] 
[layout.py: fix MDMF share layout documentation
Brian Warner <warner@lothar.com>**20110828073921
 Ignore-this: 3f13366fed75b5e31b51ae895450a225
] 
[teach 'tahoe debug dump-share' about MDMF and offsets. refs #1507
Brian Warner <warner@lothar.com>**20110828073834
 Ignore-this: 3a9d2ef9c47a72bf1506ba41199a1dea
] 
[test_mutable.Version.test_debug: use splitlines() to fix buildslaves
Brian Warner <warner@lothar.com>**20110828064728
 Ignore-this: c7f6245426fc80b9d1ae901d5218246a
 
 Any slave running in a directory with spaces in the name was miscounting
 shares, causing the test to fail.
] 
[test_mutable.Version: exercise 'tahoe debug find-shares' on MDMF. refs #1507
Brian Warner <warner@lothar.com>**20110828005542
 Ignore-this: cb20bea1c28bfa50a72317d70e109672
 
 Also changes NoNetworkGrid to put shares in storage/shares/ .
] 
[test_mutable.py: oops, missed a .todo
Brian Warner <warner@lothar.com>**20110828002118
 Ignore-this: fda09ae86481352b7a627c278d2a3940
] 
[test_mutable: merge davidsarah's patch with my Version refactorings
warner@lothar.com**20110827235707
 Ignore-this: b5aaf481c90d99e33827273b5d118fd0
] 
[test_mutable.Version: factor out some expensive uploads, save 25% runtime
Brian Warner <warner@lothar.com>**20110827232737
 Ignore-this: ea37383eb85ea0894b254fe4dfb45544
] 
[SDMF: update filenode with correct k/N after Retrieve. Fixes #1510.
Brian Warner <warner@lothar.com>**20110827225031
 Ignore-this: b50ae6e1045818c400079f118b4ef48
 
 Without this, we get a regression when modifying a mutable file that was
 created with more shares (larger N) than our current tahoe.cfg . The
 modification attempt creates new versions of the (0,1,..,newN-1) shares, but
 leaves the old versions of the (newN,..,oldN-1) shares alone (and throws a
 assertion error in SDMFSlotWriteProxy.finish_publishing in the process).
 
 The mixed versions that result (some shares with e.g. N=10, some with N=20,
 such that both versions are recoverable) cause problems for the Publish code,
 even before MDMF landed. Might be related to refs #1390 and refs #1042.
] 
[layout.py: annotate assertion to figure out 'tahoe backup' failure
Brian Warner <warner@lothar.com>**20110827195253
 Ignore-this: 9b92b954e3ed0d0f80154fff1ff674e5
] 
[Add 'tahoe debug dump-cap' support for MDMF, DIR2-CHK, DIR2-MDMF. refs #1507.
Brian Warner <warner@lothar.com>**20110827195048
 Ignore-this: 61c6af5e33fc88e0251e697a50addb2c
 
 This also adds tests for all those cases, and fixes an omission in uri.py
 that broke parsing of DIR2-MDMF-Verifier and DIR2-CHK-Verifier.
] 
[MDMF: more writable/writeable consistentifications
warner@lothar.com**20110827190602
 Ignore-this: 22492a9e20c1819ddb12091062888b55
] 
[MDMF: s/Writable/Writeable/g, for consistency with existing SDMF code
warner@lothar.com**20110827183357
 Ignore-this: 9dd312acedbdb2fc2f7bef0d0fb17c0b
] 
[test_mutable.Update: increase timeout from 120s to 400s, slaves are failing
Brian Warner <warner@lothar.com>**20110825230140
 Ignore-this: 101b1924a30cdbda9b2e419e95ca15ec
] 
[tests: fix check_memory test
zooko@zooko.com**20110825201116
 Ignore-this: 4d66299fa8cb61d2ca04b3f45344d835
 fixes #1503
] 
[docs/write_coordination.rst: fix formatting and add more specific warning about access via sshfs.
david-sarah@jacaranda.org**20110831232148
 Ignore-this: cd9c851d3eb4e0a1e088f337c291586c
] 
[setup.cfg: remove no-longer-supported test_mac_diskimage alias. refs #1479
david-sarah@jacaranda.org**20110826230345
 Ignore-this: 40e908b8937322a290fb8012bfcad02a
] 
[TAG allmydata-tahoe-1.9.0a1
warner@lothar.com**20110825161122
 Ignore-this: 3cbf49f00dbda58189f893c427f65605
] 
[touch NEWS to trigger buildslaves
warner@lothar.com**20110825161026
 Ignore-this: 3d444737d005a9051780d15604166401
] 
[test_mutable.Update: remove .timeout overrides, otherwise tests ERROR
Brian Warner <warner@lothar.com>**20110825022455
 Ignore-this: 140ea1f7207ffd68be40e112f6e3d310
] 
[blacklist.py: add read() method too, for completeness
warner@lothar.com**20110825021902
 Ignore-this: c79a429f311b01732eba2a71119e84
] 
[Additional tests for MDMF URIs and for zero-length files. refs #393
david-sarah@jacaranda.org**20110823011532
 Ignore-this: a7cc0c09d1d2d72413f9cd227c47a9d5
] 
[Additional tests for zero-length partial reads and updates to mutable versions. refs #393
david-sarah@jacaranda.org**20110822014111
 Ignore-this: 5fc6f4d06e11910124e4a277ec8a43ea
] 
[Implementation, tests and docs for blacklists. This version allows listing directories containing a blacklisted child. Inclusion of blacklist.py fixed. fixes #1425
david-sarah@jacaranda.org**20110824155928
 Ignore-this: a306f36bb6640eaf046e66dc4beeb11c
] 
[Make the immutable/read-only constraint checking for MDMF URIs identical to that for SSK URIs. refs #393
david-sarah@jacaranda.org**20110823012720
 Ignore-this: e1f59d7ff2007c81dbef2aeb14abd721
] 
[mutable/layout.py: fix unused import. refs #393
david-sarah@jacaranda.org**20110816225043
 Ignore-this: 7c9d6d91521ceb9a7abd14b2c60c0604
] 
[mutable/retrieve.py: cosmetics and remove a stale comment. refs #393
david-sarah@jacaranda.org**20110816214612
 Ignore-this: 916e60c9dff1ef85595822e609ff34b7
] 
[mutable/filenode.py: don't fetch more segments than necesasry to update the file
Kevan Carstensen <kevan@isnotajoke.com>**20110813210005
 Ignore-this: 2b0ad0533baa6f19f18851317dfc9f15
] 
[test/test_mutable: test for incorrect div_ceil equations
Kevan Carstensen <kevan@isnotajoke.com>**20110813183936
 Ignore-this: 74e6061ab2ec5e706a1235611f87d5d6
] 
[mutable/retrieve.py: use floor division to calculate segment boundaries, don't fetch more segments than necessary
Kevan Carstensen <kevan@isnotajoke.com>**20110813183833
 Ignore-this: 3e272249107afd3fbc1dd30c6a4f1e31
] 
[mdmf: clean up boolean expressions, correct typos, remove self._paused, and don't unconditionally initialize block hash trees, asll as suggested by davidsarahs' review comments
Kevan Carstensen <kevan@isnotajoke.com>**20110813183710
 Ignore-this: cc6ad9f98b64f379151aa58b77b6c4e5
] 
[now that tests pass with full-size keys, return test-keys to normal (522bit)
warner@lothar.com**20110811175418
 Ignore-this: dbce8a6699ba9a90d91cffbc8aa87900
] 
[fix SHARE_HASH_CHAIN_SIZE computation
warner@lothar.com**20110811175350
 Ignore-this: 4508359d2207c8c1b7552b546697264
] 
[More idiomatic resolution of the conflict between ticket393-MDMF-2 and trunk. refs #393
david-sarah@jacaranda.org**20110810202942
 Ignore-this: 7fc54a30ab0bc6ce75b7d819800c1182
] 
[Replace the hard-coded 522-bit RSA key size used for tests with a TEST_RSA_KEY_SIZE constant defined in test/common.py (part 2). refs #393
david-sarah@jacaranda.org**20110810202310
 Ignore-this: 7fbd4d004279599bbcb10f7b31fb010f
] 
[Replace the hard-coded 522-bit RSA key size used for tests with a TEST_RSA_KEY_SIZE constant defined in test/common.py (part 1). refs #393
david-sarah@jacaranda.org**20110810202243
 Ignore-this: c58d8130a2f383ff4421c632499b027b
] 
[merge some minor conflicts in test code from the 393-2 branch and trunk
zooko@zooko.com**20110810172139
 Ignore-this: 4a16f13eeae585c7c1dbe18c67072c90
] 
[doc: eliminate the phrase "rootcap" from doc/frontends/FTP-and-SFTP.rst
zooko@zooko.com**20110809132601
 Ignore-this: f7e1dd212daa65c81fb57977bce24304
 Two different people have asked me for help, saying they couldn't figure out what a "rootcap" is. Hopefully just calling it a "cap" will make it easier for them to find out from the other docs what it is.
] 
[test_web.py: fix a test failure dependent on whether simplejson.loads returns a unicode or str object.
david-sarah@jacaranda.org**20110808213925
 Ignore-this: f7b267be8be56fcabc968e3c89999490
] 
[immutable/filenode: fix pyflakes warnings
Kevan Carstensen <kevan@isnotajoke.com>**20110807004514
 Ignore-this: e8d875bf8b1c5571e31b0eff42ecf64c
] 
[test: fix assorted tests broken by MDMF changes
Kevan Carstensen <kevan@isnotajoke.com>**20110807004459
 Ignore-this: 9a0dc7e5c74bfe840a9fce278619a103
] 
[uri: add MDMF and MDMF directory caps, add extension hint support
Kevan Carstensen <kevan@isnotajoke.com>**20110807004436
 Ignore-this: 6486b7d4dc0e849c6b1e9cdfb6318eac
] 
[test/test_mutable: tests for MDMF
Kevan Carstensen <kevan@isnotajoke.com>**20110807004414
 Ignore-this: 29f9c3a806d67df0ed09c4f0d857d347
 
 These are their own patch because they cut across a lot of the changes
 I've made in implementing MDMF in such a way as to make it difficult to
 split them up into the other patches.
] 
[webapi changes for MDMF
Kevan Carstensen <kevan@isnotajoke.com>**20110807004348
 Ignore-this: d6d4dac680baa4c99b05882b3828796c
 
     - Learn how to create MDMF files and directories through the
       mutable-type argument.
     - Operate with the interface changes associated with MDMF and #993.
     - Learn how to do partial updates of mutable files.
] 
[mutable/servermap: Rework the servermap to work with MDMF mutable files
Kevan Carstensen <kevan@isnotajoke.com>**20110807004259
 Ignore-this: 154b987fa0af716c41185b88ff7ee2e1
] 
[dirnode: teach dirnode to make MDMF directories
Kevan Carstensen <kevan@isnotajoke.com>**20110807004224
 Ignore-this: 765ccd6a07ff752bf6057a3dab9e5abd
] 
[Fix some test failures caused by #393 patch.
david-sarah@jacaranda.org**20110802032810
 Ignore-this: 7f65e5adb5c859af289cea7011216fef
] 
[docs: amend configuration, webapi documentation to talk about MDMF
Kevan Carstensen <kevan@isnotajoke.com>**20110802022056
 Ignore-this: 4cab9b7e4ab79cc1efdabe2d457f27a6
] 
[cli: teach CLI how to create MDMF mutable files
Kevan Carstensen <kevan@isnotajoke.com>**20110802021613
 Ignore-this: 18d0ff98e75be231eed3c53319e76936
 
 Specifically, 'tahoe mkdir' and 'tahoe put' now take a --mutable-type
 argument.
] 
[frontends/sftpd: Resolve incompatibilities between SFTP frontend and MDMF changes
Kevan Carstensen <kevan@isnotajoke.com>**20110802021207
 Ignore-this: 5e0f6e961048f71d4eed6d30210ffd2e
] 
[mutable/layout: Define MDMF share format, write tools for working with MDMF share format
Kevan Carstensen <kevan@isnotajoke.com>**20110802021120
 Ignore-this: fa76ef4800939e19ba3cbc22a2eab4e
 
 The changes in layout.py are mostly concerned with the MDMF share
 format. In particular, we define read and write proxy objects used by
 retrieval, publishing, and other code to write and read the MDMF share
 format. We create equivalent proxies for SDMF objects so that these
 objects can be suitably general.
] 
[immutable/filenode: implement unified filenode interface
Kevan Carstensen <kevan@isnotajoke.com>**20110802020905
 Ignore-this: d9a442fc285157f134f5d1b4607c6a48
] 
[immutable/literal.py: Implement interface changes in literal nodes.
Kevan Carstensen <kevan@isnotajoke.com>**20110802020814
 Ignore-this: 4371e71a50e65ce2607c4d67d3a32171
] 
[test/common: Alter common test code to work with MDMF.
Kevan Carstensen <kevan@isnotajoke.com>**20110802015643
 Ignore-this: e564403182d0030439b168dd9f8726fa
 
 This mostly has to do with making the test code implement the new
 unified filenode interfaces.
] 
[mutable: train checker and repairer to work with MDMF mutable files
Kevan Carstensen <kevan@isnotajoke.com>**20110802015140
 Ignore-this: 8b1928925bed63708b71ab0de8d4306f
] 
[nodemaker: teach nodemaker about MDMF caps
Kevan Carstensen <kevan@isnotajoke.com>**20110802014926
 Ignore-this: 430c73121b6883b99626cfd652fc65c4
] 
[client: teach client how to create and work with MDMF files
Kevan Carstensen <kevan@isnotajoke.com>**20110802014811
 Ignore-this: d72fbc4c2ca63f00d9ab9dc2919098ff
] 
[mutable/filenode: Modify mutable filenodes for use with MDMF
Kevan Carstensen <kevan@isnotajoke.com>**20110802014501
 Ignore-this: 3c230bb0ebe60a94c667b0ee0c3b28e0
 
 In particular:
     - Break MutableFileNode and MutableFileVersion into distinct classes.
     - Implement the interface modifications made for MDMF.
     - Be aware of MDMF caps.
     - Learn how to create and work with MDMF files.
] 
[nodemaker: teach nodemaker how to create MDMF mutable files
Kevan Carstensen <kevan@isnotajoke.com>**20110802014258
 Ignore-this: 2bf1fd4f8c1d1ad0e855c678347b76c2
] 
[interfaces: change interfaces to work with MDMF
Kevan Carstensen <kevan@isnotajoke.com>**20110802014119
 Ignore-this: 2f441022cf888c044bc9e6dd609db139
 
 A lot of this work concerns #993, in that it unifies (to an extent) the
 interfaces of mutable and immutable files.
] 
[mutable/publish: teach the publisher how to publish MDMF mutable files
Kevan Carstensen <kevan@isnotajoke.com>**20110802013931
 Ignore-this: 115217ec2b289452ec774cb725da8a86
 
 Like the downloader, the publisher needs some substantial changes to handle multiple segment mutable files.
] 
[mutable/retrieve: rework the mutable downloader to handle multiple-segment files
Kevan Carstensen <kevan@isnotajoke.com>**20110802013524
 Ignore-this: 398d11b5cb993b50e5e4fa6e7a3856dc
 
 The downloader needs substantial reworking to handle multiple segment
 mutable files, which it needs to handle for MDMF.
] 
[Fix repeated 'the' in license text.
david-sarah@jacaranda.org**20110819204836
 Ignore-this: b3bd4e9ec22029fe15533ad2a60003ad
] 
[Remove Non-Profit Open Software License from the set of 'added permission' licenses. Although it actually does qualify as an Open Source license (because it allows relicensing under plain OSL), its wording is unclear and could easily be misunderstood, and it contributes to incompatible license proliferation.
david-sarah@jacaranda.org**20110819204742
 Ignore-this: 7373819a6b5367581356728ea62cabb1
] 
[docs: change links that pointed to COPYING.TGPPL.html to point to COPYING.TGPPL.rst instead
zooko@zooko.com**20110819060142
 Ignore-this: 301652554fd7ab4bfa5aa8f8a2863a9e
] 
[docs: formatting: reflow to fill-column 77
zooko@zooko.com**20110819060110
 Ignore-this: ed1317c126f07c63b944bd2fa6aa2d21
] 
[docs: formatting: M-x whitespace-cleanup
zooko@zooko.com**20110819060041
 Ignore-this: 8554b16a25067094d0dc4dc71e1b3950
] 
[licensing: add to the list of licenses that we grant the added permission for
zooko@zooko.com**20110819054656
 Ignore-this: eb1490416ac6b7414a27f150a8a8a047
 Added: most of the ones listed on the FSF's "List of Free Software, GPL Incompatible Licenses", plus the Non-Profit Open Software License.
] 
[docs: reflow the added text at the top of COPYING.GPL to fill-column 77
zooko@zooko.com**20110819053059
 Ignore-this: e994ed6ffbcc12656406f11cb862ce99
] 
[docs: reformat COPYING.TGPPL.html to COPYING.TGPPL.rst
zooko@zooko.com**20110819052753
 Ignore-this: 34ddf623e0a6de008ba859ca9c92b2fd
] 
[docs: reflow docs/logging.rst to fill-column 77
zooko@zooko.com**20110819044103
 Ignore-this: a6901f2244995f278ddf8d75d29410bf
] 
[doc: fix formatting error in docs/logging.rst
zooko@zooko.com**20110819043946
 Ignore-this: fa182dbbe7f4fda15e0a8bfcf7f00051
] 
[Cleanups for suppression of UserWarnings. refs #1435
david-sarah@jacaranda.org**20110818040749
 Ignore-this: 3863ef399c1c382a1365d51f000d314c
] 
[suppress warning emitted by newer zope.interface with Nevow 0.10
zooko@zooko.com**20110817203134
 Ignore-this: b86d4ce0ed1c0da76d1f9eaf8d08d9c4
 refs #1435
] 
[doc: formatting: reflow to fill-column=77
zooko@zooko.com**20110809132510
 Ignore-this: 2d6d2e203d52925968b4451f36364792
] 
[_auto_deps.py: change the requirement for zope.interface to <= 3.6.2, >= 3.6.6. fixes #1435
david-sarah@jacaranda.org**20110815025347
 Ignore-this: 17a88c0f6573f044fbcd6b666667bd37
] 
[allmydata/__init__.py, test_version.py: make version parsing understand '<=', with test. refs #1435
david-sarah@jacaranda.org**20110815035153
 Ignore-this: 8c3a75f4a2b42b56bac48b5053c5e9c2
] 
[Makefile and setup.py: remove setup.py commands that we no longer need, and their uses in the Makefile. Delete a stale and incorrect comment about updating _version.py. Also fix some coding style checks in the Makefile to operate on all source files.
david-sarah@jacaranda.org**20110801031952
 Ignore-this: 80a435dee3bc6e29058d4b37ff579922
] 
[remove misc/debian[_helpers], rely upon official packaging instead. fixes #1454
warner@lothar.com**20110811182705
 Ignore-this: 79673cafc7c108db49b5ab908d7b4668
] 
[Makefile: remove targets that used misc/debian[_helpers] which no longer exist. Also change docs/debian.rst to reflect the fact that we no longer support building .debs using those targets. refs #1454
david-sarah@jacaranda.org**20110801031857
 Ignore-this: 347cbeff45757db630ce34d0cfb84f92
] 
[replace tabs with spaces in the #1441 'tahoe debug' synopsis
warner@lothar.com**20110811173704
 Ignore-this: 513fbfb18a3dd93119ea3700118df7ee
] 
[Correct the information printed by '/usr/bin/tahoe debug --help' on Debian/Ubuntu. fixes #1441
david-sarah@jacaranda.org**20110724162530
 Ignore-this: 30d4b8c20e420e9a9d1b73eba1113ae
] 
[doc: edit the explanation of K-of-N tradeoffs
zooko@zooko.com**20110804193409
 Ignore-this: ab6f4e35a995c2099340b5c9c5d30f40
] 
[doc: clean up formatting of doc/configuration.rst
zooko@zooko.com**20110804192722
 Ignore-this: 7a98a3a8afb7e5441ff1f534211199ba
 reflow to 77 chars line width, M-x white-space cleanup, blank link between name and definition
] 
[Add test for webopen. fixes #1149
david-sarah@jacaranda.org**20110724211659
 Ignore-this: 1e22853f7eb05e24c3141d56a513f661
] 
[test_client.py: relax a check in test_create_drop_uploader so that it should pass on Python 2.4.x. refs #1429
david-sarah@jacaranda.org**20110810052504
 Ignore-this: 1380749ceaf33c30e26c50d57476616c
] 
[test/common_util.py: correct fix to mkdir_nonascii. refs #1472
david-sarah@jacaranda.org**20110810051906
 Ignore-this: 93c0c33370bc47d95c26c4cce8e05290
] 
[test/common_util.py: fix a typo. refs #1472
david-sarah@jacaranda.org**20110810044235
 Ignore-this: f88643d7c82cb3577686d77bbff9e2bc
] 
[test_client.py, test_drop_upload.py: fix pyflakes warnings.
david-sarah@jacaranda.org**20110810034505
 Ignore-this: 1e2d71bf2f43d63cbb423d32a6f96793
] 
[Factor out methods dealing with non-ASCII directories and filenames from test_drop_upload.py into common_util.py. refs #1429, #1472
david-sarah@jacaranda.org**20110810031558
 Ignore-this: 3de8f945fa7a58fc318a1184bad0fd1a
] 
[test_client.py: add a test that the drop-uploader is initialized correctly by client.py. Also give the DropUploader service a name, which is necessary for the test. refs #1429
david-sarah@jacaranda.org**20110810030538
 Ignore-this: 13d511ea9bbe9da2dcffe4a91ce94eae
] 
[drop-upload: rename 'start' method to 'startService', which is what you're supposed to use to start a Service. refs #1429
david-sarah@jacaranda.org**20110810030345
 Ignore-this: d1f5e5c63937ea37be37324e2f1ae99d
] 
[test_drop_upload.py: add comment explaining why we don't use FilePath.setContent. refs #1429
david-sarah@jacaranda.org**20110810025942
 Ignore-this: b95358030b63cb467d1d7f1b9a9b6978
] 
[test_drop_upload.py: fix some grammatical and spelling nits. refs #1429
david-sarah@jacaranda.org**20110809221231
 Ignore-this: fd331acddd9f754173f274a34fe62f03
] 
[drop-upload: report the configured local directory being absent differently from it being a file
zooko@zooko.com**20110809220930
 Ignore-this: a08879100f5f20e609be3f0ffa3b25cc
 refs #1429
] 
[drop-upload: rename the 'upload.uri' parameter to 'upload.dircap', and a couple of cleanups to error messages. refs #1429
zooko@zooko.com**20110809220508
 Ignore-this: 4846368cbe331e8653bdce1f314e276b
 I rerecorded this patch, originally by David-Sarah, to use "darcs replace" instead of editing to do the renames. This uncovered one missed rename in Client.init_drop_uploader. (Which also means that code isn't exercised by the current unit tests.)
 refs #1429
] 
[drop-upload test for non-existent local dir separately from test for non-directory local dir
zooko@zooko.com**20110809220115
 Ignore-this: cd85f345c02f5cb71b1c1527bd4ebddc
 A candidate patch for #1429 has a bug when it is using FilePath.is_dir() to detect whether the configured local dir exists and is a directory. FilePath.is_dir() raises exception, instead of returning False, if the thing doesn't exist. This test is to make sure that DropUploader.__init__ raise different exceptions for those two cases.
 refs #1429
] 
[drop-upload: unit tests for the configuration options being named "cap" instead of "uri"
zooko@zooko.com**20110809215913
 Ignore-this: 958c78fffb3d76b3e4817647f824e7f9
 This is a subset of a patch that David-Sarah attached to #1429. This is just the unit-tests part of that patch, and uses darcs record instead of hunks to change the names.
 refs #1429
] 
[src/allmydata/storage/server.py: use the filesystem of storage/shares/, rather than storage/, to calculate remaining space. fixes #1384
david-sarah@jacaranda.org**20110719022752
 Ignore-this: a4781043cfd453dbb66ae4f108d80bea
] 
[test_storage.py: test that we are using the filesystem of storage/shares/, rather than storage/, to calculate remaining space, and that the HTML status output reflects the values returned by fileutil.get_disk_stats. This version works with older versions of the mock library. refs #1384
david-sarah@jacaranda.org**20110809190722
 Ignore-this: db447caca37a459ca49563efa58db58c
] 
[Work around ref #1472 by having test_drop_upload delete the non-ASCII directories it creates.
david-sarah@jacaranda.org**20110809012334
 Ignore-this: 5881fd5db419ba8ad12e0b2a82f6c4f0
] 
[Remove all trailing whitespace from .py files.
david-sarah@jacaranda.org**20110809001117
 Ignore-this: d2658b5ce44af70cc606ae4d3085b7cc
] 
[test_drop_upload.py: fix unused imports. refs #1429
david-sarah@jacaranda.org**20110808235422
 Ignore-this: 834f6b946bfea699d7d8c743edd66671
] 
[Documentation for drop-upload frontend. refs #1429
david-sarah@jacaranda.org**20110808182146
 Ignore-this: b33110834e586c0b784d1736c2af5779
] 
[Drop-upload frontend, rerecorded for 1.9 beta (and correcting a minor mistake). Includes some fixes for Windows but not the Windows inotify implementation. fixes #1429
david-sarah@jacaranda.org**20110808234049
 Ignore-this: 67f824c7f554e9a3a85f9fd2e1123d97
] 
[node.py: ensure that client and introducer nodes record their port number and use that port on the next restart, fixing a regression caused by #1385. fixes #1469.
david-sarah@jacaranda.org**20110806221934
 Ignore-this: 1aa9d340b6570320ab2f9edc89c9e0a8
] 
[test_runner.py: fix a race condition in the test when NODE_URL_FILE is written before PORTNUM_FILE. refs #1469
david-sarah@jacaranda.org**20110806231842
 Ignore-this: ab01ae7cec3a073e29eec473e64052a0
] 
[test_runner.py: cleanups of HOTLINE_FILE writing and removal.
david-sarah@jacaranda.org**20110806231652
 Ignore-this: 25f5c5d6f5d8faebb26a4ce80110a335
] 
[test_runner.py: remove an unused constant.
david-sarah@jacaranda.org**20110806221416
 Ignore-this: eade2695cbabbea9cafeaa8debe410bb
] 
[node.py: fix the error path for a missing config option so that it works for a Unicode base directory.
david-sarah@jacaranda.org**20110806221007
 Ignore-this: 4eb9cc04b2ce05182a274a0d69dafaf3
] 
[test_runner.py: test that client and introducer nodes record their port number and use that port on the next restart. This tests for a regression caused by ref #1385.
david-sarah@jacaranda.org**20110806220635
 Ignore-this: 40a0c040b142dbddd47e69b3c3712f5
] 
[test_runner.py: fix a bug in CreateNode.do_create introduced in changeset [5114] when the tahoe.cfg file has been written with CRLF line endings. refs #1385
david-sarah@jacaranda.org**20110804003032
 Ignore-this: 7b7afdcf99da6671afac2d42828883eb
] 
[test_client.py: repair Basic.test_error_on_old_config_files. refs #1385
david-sarah@jacaranda.org**20110803235036
 Ignore-this: 31e2a9c3febe55948de7e144353663e
] 
[test_checker.py: increase timeout for TooParallel.test_immutable again. The ARM buildslave took 38 seconds, so 40 seconds is too close to the edge; make it 80.
david-sarah@jacaranda.org**20110803214042
 Ignore-this: 2d8026a6b25534e01738f78d6c7495cb
] 
[test_runner.py: fix RunNode.test_introducer to not rely on the mtime of introducer.furl to detect when the node has restarted. Instead we detect when node.url has been written. refs #1385
david-sarah@jacaranda.org**20110803180917
 Ignore-this: 11ddc43b107beca42cb78af88c5c394c
] 
[Further improve error message about old config files. refs #1385
david-sarah@jacaranda.org**20110803174546
 Ignore-this: 9d6cc3c288d9863dce58faafb3855917
] 
[Slightly improve error message about old config files (avoid unnecessary Unicode escaping). refs #1385
david-sarah@jacaranda.org**20110803163848
 Ignore-this: a3e3930fba7ccf90b8db3d2ed5829df4
] 
[test_checker.py: increase timeout for TooParallel.test_immutable (was consistently failing on ARM buildslave).
david-sarah@jacaranda.org**20110803163213
 Ignore-this: d0efceaf12628e8791862b80c85b5d56
] 
[Fix the bug that prevents an introducer from starting when introducer.furl already exists. Also remove some dead code that used to read old config files, and rename 'warn_about_old_config_files' to reflect that it's not a warning. refs #1385
david-sarah@jacaranda.org**20110803013212
 Ignore-this: 2d6cd14bd06a7493b26f2027aff78f4d
] 
[test_runner.py: modify RunNode.test_introducer to test that starting an introducer works when the introducer.furl file already exists. refs #1385
david-sarah@jacaranda.org**20110803012704
 Ignore-this: 8cf7f27ac4bfbb5ad8ca4a974106d437
] 
[verifier: correct a bug introduced in changeset [5106] that caused us to only verify the first block of a file. refs #1395
david-sarah@jacaranda.org**20110802172437
 Ignore-this: 87fb77854a839ff217dce73544775b11
] 
[test_repairer: add a deterministic test of share data corruption that always flips the bits of the last byte of the share data. refs #1395
david-sarah@jacaranda.org**20110802175841
 Ignore-this: 72f54603785007e88220c8d979e08be7
] 
[verifier: serialize the fetching of blocks within a share so that we don't use too much RAM
zooko@zooko.com**20110802063703
 Ignore-this: debd9bac07dcbb6803f835a9e2eabaa1
 
 Shares are still verified in parallel, but within a share, don't request a
 block until the previous block has been verified and the memory we used to hold
 it has been freed up.
 
 Patch originally due to Brian. This version has a mockery-patchery-style test
 which is "low tech" (it implements the patching inline in the test code instead
 of using an extension of the mock.patch() function from the mock library) and
 which unpatches in case of exception.
 
 fixes #1395
] 
[add docs about timing-channel attacks
Brian Warner <warner@lothar.com>**20110802044541
 Ignore-this: 73114d5f5ed9ce252597b707dba3a194
] 
['test-coverage' now needs PYTHONPATH=. to find TOP/twisted/plugins/
Brian Warner <warner@lothar.com>**20110802041952
 Ignore-this: d40f1f4cb426ea1c362fc961baedde2
] 
[remove nodeid from WriteBucketProxy classes and customers
warner@lothar.com**20110801224317
 Ignore-this: e55334bb0095de11711eeb3af827e8e8
 refs #1363
] 
[remove get_serverid() from ReadBucketProxy and customers, including Checker
warner@lothar.com**20110801224307
 Ignore-this: 837aba457bc853e4fd413ab1a94519cb
 and debug.py dump-share commands
 refs #1363
] 
[reject old-style (pre-Tahoe-LAFS-v1.3) configuration files
zooko@zooko.com**20110801232423
 Ignore-this: b58218fcc064cc75ad8f05ed0c38902b
 Check for the existence of any of them and if any are found raise exception which will abort the startup of the node.
 This is a backwards-incompatible change for anyone who is still using old-style configuration files.
 fixes #1385
] 
[whitespace-cleanup
zooko@zooko.com**20110725015546
 Ignore-this: 442970d0545183b97adc7bd66657876c
] 
[tests: use fileutil.write() instead of open() to ensure timely close even without CPython-style reference counting
zooko@zooko.com**20110331145427
 Ignore-this: 75aae4ab8e5fa0ad698f998aaa1888ce
 Some of these already had an explicit close() but I went ahead and replaced them with fileutil.write() as well for the sake of uniformity.
] 
[Address Kevan's comment in #776 about Options classes missed when adding 'self.command_name'. refs #776, #1359
david-sarah@jacaranda.org**20110801221317
 Ignore-this: 8881d42cf7e6a1d15468291b0cb8fab9
] 
[docs/frontends/webapi.rst: change some more instances of 'delete' or 'remove' to 'unlink', change some section titles, and use two blank lines between all sections. refs #776, #1104
david-sarah@jacaranda.org**20110801220919
 Ignore-this: 572327591137bb05c24c44812d4b163f
] 
[cleanup: implement rm as a synonym for unlink rather than vice-versa. refs #776
david-sarah@jacaranda.org**20110801220108
 Ignore-this: 598dcbed870f4f6bb9df62de9111b343
] 
[docs/webapi.rst: address Kevan's comments about use of 'delete' on ref #1104
david-sarah@jacaranda.org**20110801205356
 Ignore-this: 4fbf03864934753c951ddeff64392491
] 
[docs: some changes of 'delete' or 'rm' to 'unlink'. refs #1104
david-sarah@jacaranda.org**20110713002722
 Ignore-this: 304d2a330d5e6e77d5f1feed7814b21c
] 
[WUI: change the label of the button to unlink a file from 'del' to 'unlink'. Also change some internal names to 'unlink', and allow 't=unlink' as a synonym for 't=delete' in the web-API interface. Incidentally, improve a test to check for the rename button as well as the unlink button. fixes #1104
david-sarah@jacaranda.org**20110713001218
 Ignore-this: 3eef6b3f81b94a9c0020a38eb20aa069
] 
[src/allmydata/web/filenode.py: delete a stale comment that was made incorrect by changeset [3133].
david-sarah@jacaranda.org**20110801203009
 Ignore-this: b3912e95a874647027efdc97822dd10e
] 
[fix typo introduced during rebasing of 'remove get_serverid from
Brian Warner <warner@lothar.com>**20110801200341
 Ignore-this: 4235b0f585c0533892193941dbbd89a8
 DownloadStatus.add_dyhb_request and customers' patch, to fix test failure.
] 
[remove get_serverid from DownloadStatus.add_dyhb_request and customers
zooko@zooko.com**20110801185401
 Ignore-this: db188c18566d2d0ab39a80c9dc8f6be6
 This patch is a rebase of a patch originally written by Brian. I didn't change any of the intent of Brian's patch, just ported it to current trunk.
 refs #1363
] 
[remove get_serverid from DownloadStatus.add_block_request and customers
zooko@zooko.com**20110801185344
 Ignore-this: 8bfa8201d6147f69b0fbe31beea9c1e
 This is a rebase of a patch Brian originally wrote. I haven't changed the intent of that patch, just ported it to trunk.
 refs #1363
] 
[apply zooko's advice: storage_client get_known_servers() returns a frozenset, caller sorts
warner@lothar.com**20110801174452
 Ignore-this: 2aa13ea6cbed4e9084bd604bf8633692
 refs #1363
] 
[test_immutable.Test: rewrite to use NoNetworkGrid, now takes 2.7s not 97s
warner@lothar.com**20110801174444
 Ignore-this: 54f30b5d7461d2b3514e2a0172f3a98c
 remove now-unused ShareManglingMixin
 refs #1363
] 
[DownloadStatus.add_known_share wants to be used by Finder, web.status
warner@lothar.com**20110801174436
 Ignore-this: 1433bcd73099a579abe449f697f35f9
 refs #1363
] 
[replace IServer.name() with get_name(), and get_longname()
warner@lothar.com**20110801174428
 Ignore-this: e5a6f7f6687fd7732ddf41cfdd7c491b
 
 This patch was originally written by Brian, but was re-recorded by Zooko to use
 darcs replace instead of hunks for any file in which it would result in fewer
 total hunks.
 refs #1363
] 
[upload.py: apply David-Sarah's advice rename (un)contacted(2) trackers to first_pass/second_pass/next_pass
zooko@zooko.com**20110801174143
 Ignore-this: e36e1420bba0620a0107bd90032a5198
 This patch was written by Brian but was re-recorded by Zooko (with David-Sarah looking on) to use darcs replace instead of editing to rename the three variables to their new names.
 refs #1363
] 
[Coalesce multiple Share.loop() calls, make downloads faster. Closes #1268.
Brian Warner <warner@lothar.com>**20110801151834
 Ignore-this: 48530fce36c01c0ff708f61c2de7e67a
] 
[src/allmydata/_auto_deps.py: 'i686' is another way of spelling x86.
david-sarah@jacaranda.org**20110801034035
 Ignore-this: 6971e0621db2fba794d86395b4d51038
] 
[tahoe_rm.py: better error message when there is no path. refs #1292
david-sarah@jacaranda.org**20110122064212
 Ignore-this: ff3bb2c9f376250e5fd77eb009e09018
] 
[test_cli.py: Test for error message when 'tahoe rm' is invoked without a path. refs #1292
david-sarah@jacaranda.org**20110104105108
 Ignore-this: 29ec2f2e0251e446db96db002ad5dd7d
] 
[src/allmydata/__init__.py: suppress a spurious warning from 'bin/tahoe --version[-and-path]' about twisted-web and twisted-core packages.
david-sarah@jacaranda.org**20110801005209
 Ignore-this: 50e7cd53cca57b1870d9df0361c7c709
] 
[test_cli.py: use to_str on fields loaded using simplejson.loads in new tests. refs #1304
david-sarah@jacaranda.org**20110730032521
 Ignore-this: d1d6dfaefd1b4e733181bf127c79c00b
] 
[cli: make 'tahoe cp' overwrite mutable files in-place
Kevan Carstensen <kevan@isnotajoke.com>**20110729202039
 Ignore-this: b2ad21a19439722f05c49bfd35b01855
] 
[SFTP: write an error message to standard error for unrecognized shell commands. Change the existing message for shell sessions to be written to standard error, and refactor some duplicated code. Also change the lines of the error messages to end in CRLF, and take into account Kevan's review comments. fixes #1442, #1446
david-sarah@jacaranda.org**20110729233102
 Ignore-this: d2f2bb4664f25007d1602bf7333e2cdd
] 
[src/allmydata/scripts/cli.py: fix pyflakes warning.
david-sarah@jacaranda.org**20110728021402
 Ignore-this: 94050140ddb99865295973f49927c509
] 
[Fix the help synopses of CLI commands to include [options] in the right place. fixes #1359, fixes #636
david-sarah@jacaranda.org**20110724225440
 Ignore-this: 2a8e488a5f63dabfa9db9efd83768a5
] 
[encodingutil: argv and output encodings are always the same on all platforms. Lose the unnecessary generality of them being different. fixes #1120
david-sarah@jacaranda.org**20110629185356
 Ignore-this: 5ebacbe6903dfa83ffd3ff8436a97787
] 
[docs/man/tahoe.1: add man page. fixes #1420
david-sarah@jacaranda.org**20110724171728
 Ignore-this: fc7601ec7f25494288d6141d0ae0004c
] 
[Update the dependency on zope.interface to fix an incompatiblity between Nevow and zope.interface 3.6.4. fixes #1435
david-sarah@jacaranda.org**20110721234941
 Ignore-this: 2ff3fcfc030fca1a4d4c7f1fed0f2aa9
] 
[frontends/ftpd.py: remove the check for IWriteFile.close since we're now guaranteed to be using Twisted >= 10.1 which has it.
david-sarah@jacaranda.org**20110722000320
 Ignore-this: 55cd558b791526113db3f83c00ec328a
] 
[Update the dependency on Twisted to >= 10.1. This allows us to simplify some documentation: it's no longer necessary to install pywin32 on Windows, or apply a patch to Twisted in order to use the FTP frontend. fixes #1274, #1438. refs #1429
david-sarah@jacaranda.org**20110721233658
 Ignore-this: 81b41745477163c9b39c0b59db91cc62
] 
[misc/build_helpers/run_trial.py: undo change to block pywin32 (it didn't work because run_trial.py is no longer used). refs #1334
david-sarah@jacaranda.org**20110722035402
 Ignore-this: 5d03f544c4154f088e26c7107494bf39
] 
[misc/build_helpers/run_trial.py: ensure that pywin32 is not on the sys.path when running the test suite. Includes some temporary debugging printouts that will be removed. refs #1334
david-sarah@jacaranda.org**20110722024907
 Ignore-this: 5141a9f83a4085ed4ca21f0bbb20bb9c
] 
[docs/running.rst: use 'tahoe run ~/.tahoe' instead of 'tahoe run' (the default is the current directory, unlike 'tahoe start').
david-sarah@jacaranda.org**20110718005949
 Ignore-this: 81837fbce073e93d88a3e7ae3122458c
] 
[docs/running.rst: say to put the introducer.furl in tahoe.cfg.
david-sarah@jacaranda.org**20110717194315
 Ignore-this: 954cc4c08e413e8c62685d58ff3e11f3
] 
[README.txt: say that quickstart.rst is in the docs directory.
david-sarah@jacaranda.org**20110717192400
 Ignore-this: bc6d35a85c496b77dbef7570677ea42a
] 
[setup: remove the dependency on foolscap's "secure_connections" extra, add a dependency on pyOpenSSL
zooko@zooko.com**20110717114226
 Ignore-this: df222120d41447ce4102616921626c82
 fixes #1383
] 
[test_sftp.py cleanup: remove a redundant definition of failUnlessReallyEqual.
david-sarah@jacaranda.org**20110716181813
 Ignore-this: 50113380b368c573f07ac6fe2eb1e97f
] 
[docs: add missing link in NEWS.rst
zooko@zooko.com**20110712153307
 Ignore-this: be7b7eb81c03700b739daa1027d72b35
] 
[contrib: remove the contributed fuse modules and the entire contrib/ directory, which is now empty
zooko@zooko.com**20110712153229
 Ignore-this: 723c4f9e2211027c79d711715d972c5
 Also remove a couple of vestigial references to figleaf, which is long gone.
 fixes #1409 (remove contrib/fuse)
] 
[add Protovis.js-based download-status timeline visualization
Brian Warner <warner@lothar.com>**20110629222606
 Ignore-this: 477ccef5c51b30e246f5b6e04ab4a127
 
 provide status overlap info on the webapi t=json output, add decode/decrypt
 rate tooltips, add zoomin/zoomout buttons
] 
[add more download-status data, fix tests
Brian Warner <warner@lothar.com>**20110629222555
 Ignore-this: e9e0b7e0163f1e95858aa646b9b17b8c
] 
[prepare for viz: improve DownloadStatus events
Brian Warner <warner@lothar.com>**20110629222542
 Ignore-this: 16d0bde6b734bb501aa6f1174b2b57be
 
 consolidate IDownloadStatusHandlingConsumer stuff into DownloadNode
] 
[docs: fix error in crypto specification that was noticed by Taylor R Campbell <campbell+tahoe@mumble.net>
zooko@zooko.com**20110629185711
 Ignore-this: b921ed60c1c8ba3c390737fbcbe47a67
] 
[setup.py: don't make bin/tahoe.pyscript executable. fixes #1347
david-sarah@jacaranda.org**20110130235809
 Ignore-this: 3454c8b5d9c2c77ace03de3ef2d9398a
] 
[Makefile: remove targets relating to 'setup.py check_auto_deps' which no longer exists. fixes #1345
david-sarah@jacaranda.org**20110626054124
 Ignore-this: abb864427a1b91bd10d5132b4589fd90
] 
[Makefile: add 'make check' as an alias for 'make test'. Also remove an unnecessary dependency of 'test' on 'build' and 'src/allmydata/_version.py'. fixes #1344
david-sarah@jacaranda.org**20110623205528
 Ignore-this: c63e23146c39195de52fb17c7c49b2da
] 
[Rename test_package_initialization.py to (much shorter) test_import.py .
Brian Warner <warner@lothar.com>**20110611190234
 Ignore-this: 3eb3dbac73600eeff5cfa6b65d65822
 
 The former name was making my 'ls' listings hard to read, by forcing them
 down to just two columns.
] 
[tests: fix tests to accomodate [20110611153758-92b7f-0ba5e4726fb6318dac28fb762a6512a003f4c430]
zooko@zooko.com**20110611163741
 Ignore-this: 64073a5f39e7937e8e5e1314c1a302d1
 Apparently none of the two authors (stercor, terrell), three reviewers (warner, davidsarah, terrell), or one committer (me) actually ran the tests. This is presumably due to #20.
 fixes #1412
] 
[wui: right-align the size column in the WUI
zooko@zooko.com**20110611153758
 Ignore-this: 492bdaf4373c96f59f90581c7daf7cd7
 Thanks to Ted "stercor" Rolle Jr. and Terrell Russell.
 fixes #1412
] 
[docs: three minor fixes
zooko@zooko.com**20110610121656
 Ignore-this: fec96579eb95aceb2ad5fc01a814c8a2
 CREDITS for arc for stats tweak
 fix link to .zip file in quickstart.rst (thanks to ChosenOne for noticing)
 English usage tweak
] 
[docs/running.rst: fix stray HTML (not .rst) link noticed by ChosenOne.
david-sarah@jacaranda.org**20110609223719
 Ignore-this: fc50ac9c94792dcac6f1067df8ac0d4a
] 
[server.py:  get_latencies now reports percentiles _only_ if there are sufficient observations for the interpretation of the percentile to be unambiguous.
wilcoxjg@gmail.com**20110527120135
 Ignore-this: 2e7029764bffc60e26f471d7c2b6611e
 interfaces.py:  modified the return type of RIStatsProvider.get_stats to allow for None as a return value
 NEWS.rst, stats.py: documentation of change to get_latencies
 stats.rst: now documents percentile modification in get_latencies
 test_storage.py:  test_latencies now expects None in output categories that contain too few samples for the associated percentile to be unambiguously reported.
 fixes #1392
] 
[docs: revert link in relnotes.txt from NEWS.rst to NEWS, since the former did not exist at revision 5000.
david-sarah@jacaranda.org**20110517011214
 Ignore-this: 6a5be6e70241e3ec0575641f64343df7
] 
[docs: convert NEWS to NEWS.rst and change all references to it.
david-sarah@jacaranda.org**20110517010255
 Ignore-this: a820b93ea10577c77e9c8206dbfe770d
] 
[docs: remove out-of-date docs/testgrid/introducer.furl and containing directory. fixes #1404
david-sarah@jacaranda.org**20110512140559
 Ignore-this: 784548fc5367fac5450df1c46890876d
] 
[scripts/common.py: don't assume that the default alias is always 'tahoe' (it is, but the API of get_alias doesn't say so). refs #1342
david-sarah@jacaranda.org**20110130164923
 Ignore-this: a271e77ce81d84bb4c43645b891d92eb
] 
[setup: don't catch all Exception from check_requirement(), but only PackagingError and ImportError
zooko@zooko.com**20110128142006
 Ignore-this: 57d4bc9298b711e4bc9dc832c75295de
 I noticed this because I had accidentally inserted a bug which caused AssertionError to be raised from check_requirement().
] 
[M-x whitespace-cleanup
zooko@zooko.com**20110510193653
 Ignore-this: dea02f831298c0f65ad096960e7df5c7
] 
[docs: fix typo in running.rst, thanks to arch_o_median
zooko@zooko.com**20110510193633
 Ignore-this: ca06de166a46abbc61140513918e79e8
] 
[relnotes.txt: don't claim to work on Cygwin (which has been untested for some time). refs #1342
david-sarah@jacaranda.org**20110204204902
 Ignore-this: 85ef118a48453d93fa4cddc32d65b25b
] 
[relnotes.txt: forseeable -> foreseeable. refs #1342
david-sarah@jacaranda.org**20110204204116
 Ignore-this: 746debc4d82f4031ebf75ab4031b3a9
] 
[replace remaining .html docs with .rst docs
zooko@zooko.com**20110510191650
 Ignore-this: d557d960a986d4ac8216d1677d236399
 Remove install.html (long since deprecated).
 Also replace some obsolete references to install.html with references to quickstart.rst.
 Fix some broken internal references within docs/historical/historical_known_issues.txt.
 Thanks to Ravi Pinjala and Patrick McDonald.
 refs #1227
] 
[docs: FTP-and-SFTP.rst: fix a minor error and update the information about which version of Twisted fixes #1297
zooko@zooko.com**20110428055232
 Ignore-this: b63cfb4ebdbe32fb3b5f885255db4d39
] 
[munin tahoe_files plugin: fix incorrect file count
francois@ctrlaltdel.ch**20110428055312
 Ignore-this: 334ba49a0bbd93b4a7b06a25697aba34
 fixes #1391
] 
[corrected "k must never be smaller than N" to "k must never be greater than N"
secorp@allmydata.org**20110425010308
 Ignore-this: 233129505d6c70860087f22541805eac
] 
[Fix a test failure in test_package_initialization on Python 2.4.x due to exceptions being stringified differently than in later versions of Python. refs #1389
david-sarah@jacaranda.org**20110411190738
 Ignore-this: 7847d26bc117c328c679f08a7baee519
] 
[tests: add test for including the ImportError message and traceback entry in the summary of errors from importing dependencies. refs #1389
david-sarah@jacaranda.org**20110410155844
 Ignore-this: fbecdbeb0d06a0f875fe8d4030aabafa
] 
[allmydata/__init__.py: preserve the message and last traceback entry (file, line number, function, and source line) of ImportErrors in the package versions string. fixes #1389
david-sarah@jacaranda.org**20110410155705
 Ignore-this: 2f87b8b327906cf8bfca9440a0904900
] 
[remove unused variable detected by pyflakes
zooko@zooko.com**20110407172231
 Ignore-this: 7344652d5e0720af822070d91f03daf9
] 
[allmydata/__init__.py: Nicer reporting of unparseable version numbers in dependencies. fixes #1388
david-sarah@jacaranda.org**20110401202750
 Ignore-this: 9c6bd599259d2405e1caadbb3e0d8c7f
] 
[update FTP-and-SFTP.rst: the necessary patch is included in Twisted-10.1
Brian Warner <warner@lothar.com>**20110325232511
 Ignore-this: d5307faa6900f143193bfbe14e0f01a
] 
[control.py: remove all uses of s.get_serverid()
warner@lothar.com**20110227011203
 Ignore-this: f80a787953bd7fa3d40e828bde00e855
] 
[web: remove some uses of s.get_serverid(), not all
warner@lothar.com**20110227011159
 Ignore-this: a9347d9cf6436537a47edc6efde9f8be
] 
[immutable/downloader/fetcher.py: remove all get_serverid() calls
warner@lothar.com**20110227011156
 Ignore-this: fb5ef018ade1749348b546ec24f7f09a
] 
[immutable/downloader/fetcher.py: fix diversity bug in server-response handling
warner@lothar.com**20110227011153
 Ignore-this: bcd62232c9159371ae8a16ff63d22c1b
 
 When blocks terminate (either COMPLETE or CORRUPT/DEAD/BADSEGNUM), the
 _shares_from_server dict was being popped incorrectly (using shnum as the
 index instead of serverid). I'm still thinking through the consequences of
 this bug. It was probably benign and really hard to detect. I think it would
 cause us to incorrectly believe that we're pulling too many shares from a
 server, and thus prefer a different server rather than asking for a second
 share from the first server. The diversity code is intended to spread out the
 number of shares simultaneously being requested from each server, but with
 this bug, it might be spreading out the total number of shares requested at
 all, not just simultaneously. (note that SegmentFetcher is scoped to a single
 segment, so the effect doesn't last very long).
] 
[immutable/downloader/share.py: reduce get_serverid(), one left, update ext deps
warner@lothar.com**20110227011150
 Ignore-this: d8d56dd8e7b280792b40105e13664554
 
 test_download.py: create+check MyShare instances better, make sure they share
 Server objects, now that finder.py cares
] 
[immutable/downloader/finder.py: reduce use of get_serverid(), one left
warner@lothar.com**20110227011146
 Ignore-this: 5785be173b491ae8a78faf5142892020
] 
[immutable/offloaded.py: reduce use of get_serverid() a bit more
warner@lothar.com**20110227011142
 Ignore-this: b48acc1b2ae1b311da7f3ba4ffba38f
] 
[immutable/upload.py: reduce use of get_serverid()
warner@lothar.com**20110227011138
 Ignore-this: ffdd7ff32bca890782119a6e9f1495f6
] 
[immutable/checker.py: remove some uses of s.get_serverid(), not all
warner@lothar.com**20110227011134
 Ignore-this: e480a37efa9e94e8016d826c492f626e
] 
[add remaining get_* methods to storage_client.Server, NoNetworkServer, and
warner@lothar.com**20110227011132
 Ignore-this: 6078279ddf42b179996a4b53bee8c421
 MockIServer stubs
] 
[upload.py: rearrange _make_trackers a bit, no behavior changes
warner@lothar.com**20110227011128
 Ignore-this: 296d4819e2af452b107177aef6ebb40f
] 
[happinessutil.py: finally rename merge_peers to merge_servers
warner@lothar.com**20110227011124
 Ignore-this: c8cd381fea1dd888899cb71e4f86de6e
] 
[test_upload.py: factor out FakeServerTracker
warner@lothar.com**20110227011120
 Ignore-this: 6c182cba90e908221099472cc159325b
] 
[test_upload.py: server-vs-tracker cleanup
warner@lothar.com**20110227011115
 Ignore-this: 2915133be1a3ba456e8603885437e03
] 
[happinessutil.py: server-vs-tracker cleanup
warner@lothar.com**20110227011111
 Ignore-this: b856c84033562d7d718cae7cb01085a9
] 
[upload.py: more tracker-vs-server cleanup
warner@lothar.com**20110227011107
 Ignore-this: bb75ed2afef55e47c085b35def2de315
] 
[upload.py: fix var names to avoid confusion between 'trackers' and 'servers'
warner@lothar.com**20110227011103
 Ignore-this: 5d5e3415b7d2732d92f42413c25d205d
] 
[refactor: s/peer/server/ in immutable/upload, happinessutil.py, test_upload
warner@lothar.com**20110227011100
 Ignore-this: 7ea858755cbe5896ac212a925840fe68
 
 No behavioral changes, just updating variable/method names and log messages.
 The effects outside these three files should be minimal: some exception
 messages changed (to say "server" instead of "peer"), and some internal class
 names were changed. A few things still use "peer" to minimize external
 changes, like UploadResults.timings["peer_selection"] and
 happinessutil.merge_peers, which can be changed later.
] 
[storage_client.py: clean up test_add_server/test_add_descriptor, remove .test_servers
warner@lothar.com**20110227011056
 Ignore-this: efad933e78179d3d5fdcd6d1ef2b19cc
] 
[test_client.py, upload.py:: remove KiB/MiB/etc constants, and other dead code
warner@lothar.com**20110227011051
 Ignore-this: dc83c5794c2afc4f81e592f689c0dc2d
] 
[test: increase timeout on a network test because Francois's ARM machine hit that timeout
zooko@zooko.com**20110317165909
 Ignore-this: 380c345cdcbd196268ca5b65664ac85b
 I'm skeptical that the test was proceeding correctly but ran out of time. It seems more likely that it had gotten hung. But if we raise the timeout to an even more extravagant number then we can be even more certain that the test was never going to finish.
] 
[docs/configuration.rst: add a "Frontend Configuration" section
Brian Warner <warner@lothar.com>**20110222014323
 Ignore-this: 657018aa501fe4f0efef9851628444ca
 
 this points to docs/frontends/*.rst, which were previously underlinked
] 
[web/filenode.py: avoid calling req.finish() on closed HTTP connections. Closes #1366
"Brian Warner <warner@lothar.com>"**20110221061544
 Ignore-this: 799d4de19933f2309b3c0c19a63bb888
] 
[Add unit tests for cross_check_pkg_resources_versus_import, and a regression test for ref #1355. This requires a little refactoring to make it testable.
david-sarah@jacaranda.org**20110221015817
 Ignore-this: 51d181698f8c20d3aca58b057e9c475a
] 
[allmydata/__init__.py: .name was used in place of the correct .__name__ when printing an exception. Also, robustify string formatting by using %r instead of %s in some places. fixes #1355.
david-sarah@jacaranda.org**20110221020125
 Ignore-this: b0744ed58f161bf188e037bad077fc48
] 
[Refactor StorageFarmBroker handling of servers
Brian Warner <warner@lothar.com>**20110221015804
 Ignore-this: 842144ed92f5717699b8f580eab32a51
 
 Pass around IServer instance instead of (peerid, rref) tuple. Replace
 "descriptor" with "server". Other replacements:
 
  get_all_servers -> get_connected_servers/get_known_servers
  get_servers_for_index -> get_servers_for_psi (now returns IServers)
 
 This change still needs to be pushed further down: lots of code is now
 getting the IServer and then distributing (peerid, rref) internally.
 Instead, it ought to distribute the IServer internally and delay
 extracting a serverid or rref until the last moment.
 
 no_network.py was updated to retain parallelism.
] 
[TAG allmydata-tahoe-1.8.2
warner@lothar.com**20110131020101] 
Patch bundle hash:
abec99244ff9bbcb49b13680e6144a7267552995