on 5-18-2009 1:04 PM P.A spake the following:
Hi recently I noticed in the messages log, the following error
May 18 15:59:52 mail kernel: sdb: assuming drive cache: write through
May 18 15:59:52 mail kernel: sdb : READ CAPACITY failed.
May 18 15:59:52 mail kernel: sdb : status=0, message=00, host=1, driver=00
May 18 15:59:52 mail kernel: sdb : sense not available.
May 18 15:59:52 mail kernel: sdb: assuming Write Enabled
May 18 15:59:52 mail kernel: sdb: assuming drive cache: write through
May 18 15:59:52 mail kernel: sdb:<3>Buffer I/O error on device sdb, logical block 0
May 18 15:59:52 mail kernel: Buffer I/O error on device sdb, logical block 0
May 18 15:59:52 mail last message repeated 5 times
May 18 15:59:52 mail kernel: unable to read partition table
I’m not sure what sdb is since its not listed on my partition table
[root@mail srvadmin]# fdisk -l
Disk /dev/sda: 109.1 GB, 109196476416 bytes
255 heads, 63 sectors/track, 13275 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 13275 106527015 8e Linux LVM
[root@mail srvadmin]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
99G 42G 52G 45% //dev/sda1 99M 44M 51M 47% /boot
none 3.9G 0 3.9G 0% /dev/shm
[root@mail srvadmin]#
I looked at the hardware itself and all disk in this raid system are fine, my question is, is this something I need to worry about and what is causing this issue.
Although everything looking fine, my messages log is full of sdb complaints.
Does the system have memory card slots or a sd or cf reader? Some of those get detected as a scsi drive, but fail like this.