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SubjectRe: Bad page state in process 'nfsd' with xfs

> David Greaves wrote:
> > Hash: SHA1
> >
> > This was with
> >
> > There's an nfs export from an xfs on an lvm on a raid5 on some
> > libata/sata disks.
> > (cc'ing xfs since I recall rumoured(?) badness in old nfs/xfs/md/lvm
> > setups and xfs_sendfile is mentioned)
> >
> > dmesg had:
> >
> > Bad page state in process 'nfsd'
> > page:b1602060 flags:0x80000008 mapping:00000000 mapcount:0 count:16777216
> > Trying to fix it up, but a reboot is needed
> > Backtrace:
> > [<b013bda2>] bad_page+0x62/0x90
> > [<b013c1c8>] prep_new_page+0x78/0x80
> Looks like you have a bit flipped in 'count', which was not flipped
> when the page was last freed. Probably buggy RAM.
> Running memtest overnight might confirm that.

Or not. I had an FC3/x86-64 system until two days ago, now I have FC5/86-64.

When FC3 was installed I chose to format the partitions to XFS and since
I had Oopses regularly with or without VMWare modules.
I have run memtest64+ for 12+ hours and it indicated two separate single bit
errors in the topmost 64MB of my 1GB. Since then I was running with
mem=960M but I still got Oopses on a bit heavier disk loads and every time
XFS was involved.

I backed up my /home with rsync to a new harddisk in single mode,
the new disk was formatted to EXT3. During the backup I had Oopses
about 5 or 6 times and I had to reboot. Rsync was able to continue,
that's why I chose that for backup...

I installed FC5 using only EXT3 partitions and copied my 80+ GB data
back to /home. Guess what? No Oopses...

Best regards,
Zoltán Böszörményi

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