修复zpool data errors错误
故障信息：
root@host1:/tank/new/ddd# zpool status -v tank
pool: tank
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://illumos.org/msg/ZFS-8000-8A
scan: scrub repaired 0 in 0h0m with 1161 errors on Thu Apr 17 10:02:52 2014
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 6.83K
mirror-0 ONLINE 0 0 13.7K
c3t5000C5000B74F2DBd0 ONLINE 0 0 13.7K
c3t5000C50043FFA61Fd0 ONLINE 0 0 13.7K
errors: Permanent errors have been detected in the following files:
/tank/new/ddd/Oracle Solaris 11 11_11 .cn. E26926_01.zip
root@host1:/tank/new/ddd# zpool status tank
pool: tank
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://illumos.org/msg/ZFS-8000-8A
scan: scrub repaired 0 in 0h0m with 1161 errors on Thu Apr 17 10:02:52 2014
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 6.83K
mirror-0 ONLINE 0 0 13.7K
c3t5000C5000B74F2DBd0 ONLINE 0 0 13.7K
c3t5000C50043FFA61Fd0 ONLINE 0 0 13.7K
errors: 1161 data errors, use '-v' for a list
修复方法：
root@host1:/tank/new/ddd# rm /tank/new/ddd/Oracle\ Solaris\ 11\ 11_11\ .cn.\ E26926_01.zip
root@host1:/tank/new/ddd# zpool status -v tank
pool: tank
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://illumos.org/msg/ZFS-8000-8A
scan: scrub repaired 0 in 0h0m with 1161 errors on Thu Apr 17 10:02:52 2014
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 6.83K
mirror-0 ONLINE 0 0 13.7K
c3t5000C5000B74F2DBd0 ONLINE 0 0 13.7K
c3t5000C50043FFA61Fd0 ONLINE 0 0 13.7K
errors: Permanent errors have been detected in the following files:
tank/new:<0x51b9>
检测：
root@host1:/tank/new/ddd# zpool status tank
pool: tank
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://illumos.org/msg/ZFS-8000-8A
scan: scrub repaired 0 in 0h0m with 1161 errors on Thu Apr 17 10:02:52 2014
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 6.83K
mirror-0 ONLINE 0 0 13.7K
c3t5000C5000B74F2DBd0 ONLINE 0 0 13.7K
c3t5000C50043FFA61Fd0 ONLINE 0 0 13.7K
errors: 1161 data errors, use '-v' for a list
结果：
pool: tank
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://illumos.org/msg/ZFS-8000-8A
scan: scrub in progress since Thu Apr 17 10:05:46 2014
2.20G scanned out of 2.44G at 70.5M/s, 0h0m to go
0 repaired, 90.38% done
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 6.83K
mirror-0 ONLINE 0 0 13.7K
c3t5000C5000B74F2DBd0 ONLINE 0 0 13.7K
c3t5000C50043FFA61Fd0 ONLINE 0 0 13.7K
errors: 1161 data errors, use '-v' for a list
pool: tank
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://illumos.org/msg/ZFS-8000-9P
scan: scrub repaired 0 in 0h0m with 0 errors on Thu Apr 17 10:06:22 2014
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 6.83K
mirror-0 ONLINE 0 0 13.7K
c3t5000C5000B74F2DBd0 ONLINE 0 0 13.7K
c3t5000C50043FFA61Fd0 ONLINE 0 0 13.7K
errors: No known data errors
总结：
一个文件可以对应很多个数据块错误，当发现数据有错误时，通过镜像可以自动修复错误，如果没有其他备份机制，数据块的损坏将是永久的，数据无法恢复，只能通过清除损坏的文件来清理数据块错误。