filesystem shrinks after using xfs_repair

[Eli Morris]

Hi All,

I've got this problem where if I run xfs_repair, my filesystem shrinks by 11 TB, from a volume size of 62 TB to 51 TB. I can grow the filesystem again with xfs_growfs, but then rerunning xfs_repair shrinks it back down again. The first time this happened was a few days ago and running xfs_repair took about 7 TB of data with it. That is, out of the 11 TB of disk space that vanished, 7 TB had data on it, and 4 TB was empty space. XFS is running on top of an LVM volume. It's on an Intel/Linux system running Centos 5 (2.6.18-128.1.14.el5). Does anyone have an idea on what would cause such a thing and what I might try to keep it from continuing to happen. I could just never run xfs_repair again, but that doesn't seem like a good thing to count on. Major bonus points if anyone has any ideas on how to get my 7 TB of data back also. It must be there somewhere and it would be very bad to lose.

thanks for any help and ideas. I'm just stumped right now.

Eli