On Wed, 10 Nov 2010, John R Pierce wrote:
> On 11/10/10 6:58 PM, Gilbert Sebenste wrote:
>> Hey everyone,
>>
>> I just got one of these today:
>>
>> Nov 10 16:07:54 stormy kernel: sd 0:0:0:0: SCSI error: return code =
>> 0x08000000
>> Nov 10 16:07:54 stormy kernel: sda: Current: sense key: Medium Error
>> Nov 10 16:07:54 stormy kernel: Add. Sense: Unrecovered read error
>> Nov 10 16:07:54 stormy kernel:
>> Nov 10 16:07:54 stormy kernel: Info fld=0x0
>> Nov 10 16:07:54 stormy kernel: end_request: I/O error, dev sda, sector
>> 3896150669
>
> see where it says dev sda ? thats physical drive zero which has a read
> error on that sector.
>
>
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743752)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743760)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743768)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743776)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743784)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743792)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743800)
>> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743808)
>>
>> My question is this: I have RAID00 set up, but don't really understand
>> it well. This is how my disks are set up:
>>
>> Filesystem 1K-blocks Used Available Use% Mounted on
>> /dev/mapper/VolGroup00-LogVol00
>> 1886608544 296733484 1492495120 17% /
>> /dev/sda1 101086 19877 75990 21% /boot
>> tmpfs 1684312 1204416 479896 72% /dev/shm
>>
>
> that is not how your disks are setup, thats how your FILE SYSTEMS are setup.
Correct, apologies for the incorrect wording.
> that dev/mapper thing is a LVM volume. you can display the physical volumes
> behind a LVM with the command 'pvs'
Thank you! That was helpful.
>> Which one is having the trouble? Any ideas so I can swap it out?
>
> raid0 is not suitable for reliability. if any one drive in the raid0 fails
> (or is removed) the whole volume has failed and will become unusable.
Thanks John, I appreciate it! Both are being replaced after a nearby 55
KV power line shorted to ground and blew a manhole cover 50' into the air,
damaging a lot of equipment over here, even those on UPS's. Nobody was
hurt, thank goodness. But, I'll be looking into RAID 5 in the future.
*******************************************************************************
Gilbert Sebenste ********
(My opinions only!) ******
*******************************************************************************
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