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