Hi
constantly I find data corruption on ZFS volums, ever from rrdtool, this
corrupt data happens on SATA disks, never seem on SCSI
scrub is not able to repair, when comes to touch this files machines reboots,
deleting and restorin also is not poss?ble, seems I need to delete the files,
umount, scrub and mount again to clear it
# zpool status -v os
pool: os
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: http://www.sun.com/msg/ZFS-8000-8A
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
os ONLINE 0 0 0
ad4s1d ONLINE 0 0 0
errors: Permanent errors have been detected in the following files:
/usr/local/www/data-dist/monitor/wip_diskio.rrd
/usr/local/www/data-dist/monitor/200.152.90.12mon.rrd
some idea?
--
Jo?o
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 JoaoBR wrote:> Hi > > constantly I find data corruption on ZFS volums, ever from rrdtool, this > corrupt data happens on SATA disks, never seem on SCSI > > scrub is not able to repair, when comes to touch this files machines reboots, > deleting and restorin also is not poss?ble, seems I need to delete the files, > umount, scrub and mount again to clear it > > # zpool status -v os > pool: os > state: ONLINE > status: One or more devices has experienced an error resulting in data > corruption. Applications may be affected. > action: Restore the file in question if possible. Otherwise restore the > entire pool from backup. > see: http://www.sun.com/msg/ZFS-8000-8A > scrub: none requested > config: > > NAME STATE READ WRITE CKSUM > os ONLINE 0 0 0 > ad4s1d ONLINE 0 0 0 > > errors: Permanent errors have been detected in the following files: > > /usr/local/www/data-dist/monitor/wip_diskio.rrd > /usr/local/www/data-dist/monitor/200.152.90.12mon.rrd > > some idea?For ZFS: I think you need to remove these file. ZFS scrub does not recover file if you don't have redundant, e.g. copies=2 or raid-z, etc. For the data corruption itself: I think this is highly critical issue if you are sure that the hardware is good. What controller and disk are you using? Cheers, - -- Xin LI <delphij@delphij.net> http://www.delphij.net/ FreeBSD - The Power to Serve! -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkj43lEACgkQi+vbBBjt66BNlwCgpQ366XxVb6Tj5OYPDxJ7IA58 NZAAn194V1ypUWWsOfPhCxUyCSVSSUf2 =R7QE -----END PGP SIGNATURE-----
On Oct 17, 2008, at 11:30 AM, JoaoBR wrote:> constantly I find data corruption on ZFS volums, ever from rrdtool, > this > corrupt data happens on SATA disks, never seem on SCSIPresumably your SATA drives are correctly being reported by ZFS as corrupting data, and you should do something like replace cables, the drives themselves, perhaps try downgrading to SATA-150 rather than -300 if you are using the later. Also consider running a drive diagnostic utility from the mfgr (or smartmontools) and doing an extended self-test or destructive write surface check. Regards, -- -Chuck