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I've been having the subversion server hang on me quite a bit lately, and
requiring a run of db_restore. I think this is the same issue as cmpilato
has been working on lately (msg ID 74464), but r2019 doesn't seem to fix the
problem.
The problem seems to appear for me after/during 'svn cp <dav_url> <dav_url>'.
I'm not seeing any trace information on the server; it juts silently hangs,
and further access attempts of any type to the server all hang -- even ones
via ra_local. Restarting Apache doesn't seem to help. I must run db_recover
on the database and restart Apache, and then everything works fine for a
while.
It doesn't happen after every 'svn cp', and it doesn't require mvs or dels;
just 'svn cp' on directories, separated by some 'ci's and possibly 'add's.
After an arbitrary number of these copies, I get something like this:
svn_error: #21093 : <RA layer request failed>
MERGE request failed on /svn/repos/rexml
svn_error: #21093 : <RA layer request failed>
MERGE of /svn/repos/rexml: timed out waiting for server
I /think/ you can reproduce this by trying a copy and breaking in the middle
of the copy, or trying a copy that will fail (such as copying to a URL that
already exists). If this doesn't cause an error, then I only know that the
error occurs after 'n' copies. I haven't had it hang on a co or ci, yet.
This happens to me fairly regularly, so if there's some other trace
information I can provide when it does happen, please let me know. I don't
know where the "stack analizer scripts" are located. How much use would the
pstack output be? strace -p <pid>?
Here's the db_recover output, for what good it is.
[root@maus subversion]# db_recover -h /home/subversion/db -ve
db_recover: Finding last valid log LSN: file: 9 offset 3595927
db_recover: Checkpoint at: [9][3595466]
db_recover: Checkpoint LSN: [9][3504542]
db_recover: Previous checkpoint: [9][3502579]
db_recover: Checkpoint at: [9][3502579]
db_recover: Checkpoint LSN: [9][3502579]
db_recover: Previous checkpoint: [9][3492852]
db_recover: Recovery starting from [9][3502579]
db_recover: Recovery complete at Tue May 28 09:54:15 2002
db_recover: Maximum transaction ID 8002c173 Recovery checkpoint [9][3596388]
db_recover: Recovery complete at Tue May 28 09:54:15 2002
db_recover: Maximum transaction id 80000000 Recovery checkpoint [9][3596388]
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Received on Tue May 28 19:55:17 2002