Error : kernel: sd 2:0:0:2: rejecting I/O to offline device
Array Controller Bug ;I/O problem while try to acces disk. When you get this error your physical volume will be “unavailable” state .If you try “fsck” you ‘ll get super block error.
- Find out which disk getting trouble.
- Check if disk belongs to any Volume group or User.
#vgdisplay -v #lvdisplay #pvdisplay #vgs
- Check disk state from ILO or with spesific command like “hpacucli” for HP hardware .
- Also check disk state with fdisk command.
#fdisk -l /dev/sdxxx
After running this command also check if disk getting I/O error on messages file perform a Array controller upgrade and re-run this command after reboot.
For HP x86 servers update Array Controller firmware and ILO firmware. Then restart server check if disk problem solved. Becasue this problem is related a bug on Array controller which firmware is older then 2014.