Leonid Roodnitsky wrote:
> Dear All,
>
> I am receiving DEGRAGED for zpool status -v. 3 out of 14 disks are reported
> as degraded with 'too many errors'. This is Build 99 running on x4240 with
> STK SAS RAID controller. Version of AAC driver is 2.2.5. I am not sure even
> where to start. Any advice is very much appreciated. Trying to convince
> management that ZFS is the way to go and then getting this problem. RAID
> controller does not report any problems with drives. This is RAIDZ (RAID5)
> zpool. Thank you everybody.
>
>
The zpool man page says:
The health of the top-level vdev, such as mirror or raidz
device, is potentially impacted by the state of its associ-
ated vdevs, or component devices. A top-level vdev or com-
ponent device is in one of the following states:
DEGRADED One or more top-level vdevs is in the degraded
state because one or more component devices are
offline. Sufficient replicas exist to continue
functioning.
One or more component devices is in the degraded
or faulted state, but sufficient replicas exist
to continue functioning. The underlying condi-
tions are as follows:
o The number of checksum errors exceeds
acceptable levels and the device is
degraded as an indication that some-
thing may be wrong. ZFS continues to
use the device as necessary.
o The number of I/O errors exceeds
acceptable levels. The device could not
be marked as faulted because there are
insufficient replicas to continue func-
tioning.
You should take this into consideration as you decide whether
to replace disks or not.
-- richard
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