On Monday 27 Apr 2009, webpost_at_tigris.org wrote:
> I have run the strace by using:
> strace -ffFv -o strace.txt env -i LANG=C
> PATH=/usr/bin:/usr/sbin:/usr/local/bin:/bin
> LD_LIBRARY_PATH=/usr/lib/libgdbm.so.2 /usr/sbin/apachectl start &
>
> I am attaching strace.txt.1041 which shows when I am trying to hit
> http://servername/General/Test3 (one of my repository), it gets Permission
> Denied on /repos/General/Test3/db/rep-cache.db while if I do ls -l
> /repos/General/Test3/db/ following is the output
> -rwxrwxrwx 1 apache apache 2 Apr 24 14:26 current
> -rwxrwxrwx 1 apache apache 22 Apr 24 14:26 format
> -rwxrwxrwx 1 apache apache 1920 Apr 24 14:26 fsfs.conf
> -rwxrwxrwx 1 apache apache 5 Apr 24 14:26 fs-type
> -rwxrwxrwx 1 apache apache 2 Apr 24 14:26 min-unpacked-rev
> -rwxrwxrwx 1 apache apache 4096 Apr 24 14:26 rep-cache.db
> drwxrwxrwx 3 apache apache 4096 Apr 24 14:26 revprops
> drwxrwxrwx 3 apache apache 4096 Apr 24 14:26 revs
> drwxrwxrwx 2 apache apache 4096 Apr 24 14:26 transactions
> -rwxrwxrwx 1 apache apache 2 Apr 24 14:26 txn-current
> -rwxrwxrwx 1 apache apache 0 Apr 24 14:26 txn-current-lock
> drwxrwxrwx 2 apache apache 4096 Apr 24 14:26 txn-protorevs
> -rwxrwxrwx 1 apache apache 37 Apr 24 14:26 uuid
> -rwxrwxrwx 1 apache apache 0 Apr 24 14:26 write-lock
>
> Any ideas?
>
Nothing really jumps out but I'm not familiar with the internals of the server
and it might be better if someone with more knowledge comments on the
following.
The permission denied for rep-cache.db is fine as the first call to open is
trying to create it (O_CREAT flag), the second is opening it for read only
and succeeds with file descriptor 13. Then there are lots of what look like
failed seeks into the rep-cache.db file. When they stop there are the four
error lines you previously posted being written out and then the process
kills itself with a generic http response of 500. So the problem is
definitely with the rep-cache.db file.
I've experimented a little with a local repository, the cache file is about 80
mb. I moved it out the way while the server was stopped and found I could
still access the repository. Could you try something similar and see if that
lets you access it over http. It still doesn't explain what caused the
failure though. I compared strace output from my server and it looked the
same except without the failure.
Campbell
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Received on 2009-04-27 12:10:53 CEST