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!) ****** *******************************************************************************