bdraschk_114903
Apr 14, 2014Nimbostratus
Monitoring RAID status?
We just upgraded our BigIP 6900 from 10.2.3 to 11.2.1. Maybe caused by the usage of a previously unused part of the disk, maybe by bad karma, one of the two hard drives decided to go belly up:
sd 1:0:0:0: [sdb] Unhandled sense code
sd 1:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:0:0: [sdb] Sense Key : Medium Error [current] [descriptor]
...
cat /proc/mdstat
Personalities : [raid0] [raid1]
md13 : active raid1 dm-28[0]
3145664 blocks [2/1] [U_]
...
While this is certainly manageable with F5 support, the fact that we noticed it only by pure chance (accessing the standby device via the web interface) somehow makes us concerned. We can monitor a lot of things on the F5 via SNMP, including temperature, memory and disk space, but /proc/mdstat seems inaccessible from the SNMP agent.
On a vanilla netsnmp agent, one could add a custom OID and script, but the big THIS IS AN AUTO-GENERATED FILE -- DO NOT EDIT!!! somehow makes this a moot idea.
Has anyone solved this yet?