[Pvfs2-users] Data corruption?

[Sam Lang]

Number Cruncher wrote:
> I've installed pvfs2-1.5.0, created a new filesystem (on top of ext3
> ordered data mode) and restored 0.5TB from a backup drive with an XFS
> filesystem but am now getting 100s of MB of error messages in
> /tmp/pvfs2-server.log files:
> 
> [E 13:38:09.445405] TROVE:DBPF:Berkeley DB: DB->get: DB_NOTFOUND: No
> matching key/data pair found
> [E 13:38:09.448542] TROVE:DBPF:Berkeley DB: DB->get: DB_NOTFOUND: No
> matching key/data pair found
> [E 13:38:09.470425] TROVE:DBPF:Berkeley DB: DB->get: DB_NOTFOUND: No
> matching key/data pair found
> 

This message was being printed for a non-failure case.  Its been removed
for that case in the 1.5.1 release.  It doesn't mean that anything is
wrong with your filesystem.

> The client kernel also sometimes reports:
> 
> pvfs2_file_read: error writing to handle 1840698453, -- returning -2
> 

I'm not sure about this one.  Is it always the same handle?

> And pvfs2-fsck gives:
> ....
> # looking for dirdata match to 920349294.
> # mgmt_get_dirdata returned 920349293.
> # looking for dirdata match to 613565917.
> # mgmt_get_dirdata returned 613565916.
> # looking for dirdata match to 1227132674.
> # mgmt_get_dirdata returned 1227132673.
> # second pass: finding orphaned sub trees.
> * not removing None 2454203121.

The lines beginning with # are ok, this one is a little odd.  Could you
send the whole output from fsck?

-sam

> # looking for dirdata match to 306783378.
> looking for dirdata match to 306782335.
> # looking for dirdata match to 306782302.
> # looking for dirdata match to 1840699190.
> # mgmt_get_dirdata returned 1840699189.
> # looking for dirdata match to 613565678.
> # mgmt_get_dirdata returned 613565677.
> # looking for dirdata match to 2147482570.
> 
> and thousands of similar messages.
> 

> I haven't found any corrupt files yet, but am I right to be worried !?!
> 
> Thanks,
> Simon
> 
> 
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