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RE: Broken repository. svnadmin verify and dump report a checksum mismatch.

From: John Savage <JSavage_at_data-mate.com>
Date: 2006-01-10 11:40:34 CET

Sorry to re-raise this issue on the mailing list, but our repository is
fairly crippled until I get some sort of a solution to the issue. Has anyone
got any ideas on what would cause a checksum mismatch and more importantly
how to recover a repository from one? I really want to get back to using
subversion, but can't until I get an explanation for this error. Please
help.

John

-----Original Message-----
From: John Savage [mailto:JSavage@actionpoint.ie]
Sent: 07 January 2006 03:22
To: users@subversion.tigris.org
Subject: RE: Broken repository. svnadmin verify and dump report a checksum
mismatch.

All the broken revisions were made by one person. But, that same person has
made about 30% of all revisions. Also, the one working revision that sits in
the middle of the four broken ones (#41) was made by that same user. So it
is unlikely that it is a user issue.

The SVN client is TortoiseSVN 1.2.4484 (we use the special compile with the
_SVN folder hack for VS.Net web projects). There are only two developers. We
both use this client and so far, I know we have never accessed the
repository concurrently.

The first broken revision (#39) IS significantly larger than the
predecessors, but isn't the largest. It contains a commit of a very large
zip file. A complete directory listing of all the files in the db/revs
folder is as follows. I have added an asterisk to the right of each of the
four broken revisions.

Finally, some extra notes. I can retrieve the entire repository log without
any problems. I can svnadmin dump --incremental all revisions except the
four broken one and have used the dumped revision details to reload the good
revisions into a fresh repository. For now, this is a barely acceptable
workaround. A full recovery of the entire repository would obviously be more
desirable if possible. Do you have any ideas of possible causes?

Thanks,
John

----------------
12/05/2005 02:30 AM 115 0
12/05/2005 02:30 AM 23,217,595 1
12/05/2005 02:30 AM 28,793 2
12/05/2005 02:30 AM 10,665 3
12/05/2005 02:30 AM 8,594 4
12/05/2005 02:30 AM 8,542 5
12/05/2005 02:30 AM 2,667 6
12/05/2005 02:30 AM 2,678 7
12/05/2005 02:30 AM 10,240 8
12/05/2005 02:30 AM 4,117 9
12/05/2005 02:30 AM 8,081 10
12/05/2005 02:30 AM 8,053 11
12/05/2005 02:30 AM 27,536 12
12/05/2005 02:30 AM 49,944 13
12/05/2005 02:30 AM 89,731 14
12/05/2005 02:30 AM 42,768 15
12/05/2005 02:30 AM 695 16
12/06/2005 11:56 AM 213,068,265 17
12/06/2005 12:29 PM 1,144,538,164 18
12/06/2005 04:55 PM 54,353,158 19
12/07/2005 01:38 PM 13,466 20
12/07/2005 01:39 PM 3,108 21
12/07/2005 01:40 PM 10,025 22
12/12/2005 11:17 AM 2,963 23
12/12/2005 11:59 AM 608 24
12/12/2005 11:59 AM 910 25
12/12/2005 12:00 PM 699 26
12/12/2005 12:00 PM 954 27
12/12/2005 12:04 PM 473 28
12/12/2005 12:12 PM 713 29
12/15/2005 06:07 PM 53,606 30
12/19/2005 12:45 PM 8,395 31
12/19/2005 12:46 PM 10,188 32
12/19/2005 05:33 PM 1,264,598 33
12/19/2005 06:24 PM 251,196 34
12/19/2005 07:02 PM 42,110 35
12/20/2005 06:34 PM 13,367 36
12/20/2005 06:43 PM 5,028 37
12/20/2005 06:50 PM 7,492 38
12/20/2005 07:18 PM 140,230,662 39*
12/20/2005 07:28 PM 467,101,582 40*
12/21/2005 02:45 PM 75,470 41
12/21/2005 02:50 PM 33,306,483 42*
12/21/2005 03:49 PM 97,284,571 43*
12/21/2005 03:58 PM 2,111 44
12/21/2005 07:03 PM 196,371 45
12/22/2005 05:35 PM 29,085 46
01/03/2006 11:19 AM 3,863 47
01/03/2006 11:30 AM 8,275 48
01/03/2006 11:32 AM 14,856 49
01/03/2006 12:39 PM 3,359 50
01/04/2006 04:13 PM 20,954,762 51
01/04/2006 04:16 PM 147,230 52
01/05/2006 05:36 PM 48,288 53
01/05/2006 05:43 PM 61,098 54
01/06/2006 12:40 PM 32,668,415 55
01/06/2006 02:43 PM 32,252 56
01/06/2006 02:44 PM 476,279 57
-------------------------------------------

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Received on Tue Jan 10 11:43:40 2006

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