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

    > David Greaves wrote:
    > > -----BEGIN PGP SIGNED MESSAGE-----
    > > 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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