Crash recovery/zero-byte file question

[Josh Endries <endries@xxxxxxxxxxxxxx>]

Hello,

We have a RHEL 6.3 machine with a large XFS mount that suffered a power outage. 
When it came back up, it allegedly fixed itself, but now many files are zero 
bytes. I found a bug report/errata fix at RH that mentions something similar, 
which might be what we ran into. We are running a kernel that should have the 
fix as far as I can tell, but we definitely have zero byte files that shouldn't 
be.

My question is: is there a way to restore this or fix it before going to 
backups? Is it worth it to unmount and run xfs_check or similar? Unfortunately, 
since the system came up and appeared to be working, some users have been using 
that mount point.

Thanks,
Josh