Are there still known issues with NFS and XFS? I'm performing the same test
against a jfs formatted filesystem (exported via NFS), and so far, no issues.
This is the latest centosplus kernel. Are there mount options which could cause
XFS to have corruption?
Michael S. Moody
Sr. Systems Engineer
Global Systems Consulting
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-----Original Message-----
From: Eric Sandeen [mailto:sandeen@xxxxxxxxxxx]
Sent: Wednesday, June 24, 2009 5:03 PM
To: Michael Moody
Cc: xfs@xxxxxxxxxxx
Subject: Re: mkfs.xfs created filesystem larger than underlying device
Michael Moody wrote:
> It still looks wrong:
>
> [root@filer5 /]# xfs_info /mnt/Volume1/
> meta-data=/dev/Volume1-Rep-Store/Volume1-Replicated isize=256 agcount=32,
> agsize=146716768 blks
> = sectsz=512 attr=0
> data = bsize=4096 blocks=4694936576, imaxpct=25
> = sunit=0 swidth=0 blks, unwritten=1
> naming =version 2 bsize=4096
> log =internal bsize=4096 blocks=32768, version=1
> = sectsz=512 sunit=0 blks, lazy-count=0
> realtime =none extsz=4096 blocks=0, rtextents=0
4694936576*4096 = 19230460215296
> [root@filer5 /]# df
> Filesystem 1K-blocks Used Available Use% Mounted on
...
> /dev/mapper/Volume1--Rep--Store-Volume1--Replicated
> 18779615232 1056 18779614176 1% /mnt/Volume1
18779615232*1024 = 19230325997568
> [root@filer5 /]# cat /proc/partitions
> major minor #blocks name
>
...
> 253 5 18779746304 dm-5
18779746304*1024 = 19230460215296
so in bytes,
xfs_info says: 19230460215296
/proc/partitions says: 19230460215296 (same as above)
df says: 19230325997568 (a little smaller, but ok)
So, I don't see a problem here.
<later....>
> I experienced significant corruption. I had only about 3 files on the
> XFS filesystem, which was then exported via nfs. I ran nfs_stress.sh
> against it, and my files ended up corrupt, and the machine locked up.
> Ideas?
No, not really, not on a kernel this old, and without details about what
was corrupt, what xfs_repair said, what dmesg said, what sysrq-t said, etc.
-Eric
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