Re: Lose two disks during Raid 10 rebuild

On Thu, 23 Aug 2012 19:28:27 +0000 Steven La <Steven.La <at> riverbed.com> wrote:

> Hello all,
> 
> Got the following messages from syslog during Raid 10 rebuild cycle.
> 
> Aug  3 01:48:11 oak-sh283 kernel: sd 0:0:0:0: [sda] Unhandled sense code
> Aug  3 01:48:11 oak-sh283 kernel: sd 0:0:0:0: [sda] Result: hostbyte=invalid
> driverbyte=DRIVER_SENSE
> Aug  3 01:48:11 oak-sh283 kernel: sd 0:0:0:0: [sda] Sense Key : Medium Error
> [current]

"Medium Error" normally means that the recording medium (magnetic regions) is
corrupt in some way and a valid data block cannot be extracted.

> Aug  3 01:48:11 oak-sh283 kernel: Info fld=0x3ae0f43c
> Aug  3 01:48:11 oak-sh283 kernel: sd 0:0:0:0: [sda] Add. Sense: Unrecovered
> read error
> Aug  3 01:48:11 oak-sh283 kernel: sd 0:0:0:0: [sda] CDB: Read(10): 28 00 3a e0
> f3 ab 00 01 00 00
> Aug  3 01:48:11 oak-sh283 kernel: end_request: I/O error, dev sda, sector
> 987821116
> Aug  3 01:48:11 oak-sh283 kernel: md/raid10:md7: Disk failure on sda8,
> disabling device.
> Aug  3 01:48:11 oak-sh283 kernel: md/raid10:md7: Operation continuing on 2
> devices.
> Aug  3 01:48:11 oak-sh283 kernel: md: md7: recovery done.
> Aug  3 01:48:11 oak-sh283 kernel: md/raid10:md7: Disk failure on sdc8,
> disabling device.