How To Check Health Status Of Drives Behind Raid On Centos

Snippet 1

  
smartctl --scan
#output
[[email protected] ~]# smartctl --scan
/dev/sda -d scsi # /dev/sda, SCSI device
/dev/bus/0 -d megaraid,9 # /dev/bus/0 [megaraid_disk_09], SCSI device
/dev/bus/0 -d megaraid,10 # /dev/bus/0 [megaraid_disk_10], SCSI device
/dev/bus/0 -d megaraid,11 # /dev/bus/0 [megaraid_disk_11], SCSI device
/dev/bus/0 -d megaraid,12 # /dev/bus/0 [megaraid_disk_12], SCSI device
/dev/bus/0 -d megaraid,13 # /dev/bus/0 [megaraid_disk_13], SCSI device
/dev/bus/0 -d megaraid,14 # /dev/bus/0 [megaraid_disk_14], SCSI device
/dev/bus/0 -d megaraid,16 # /dev/bus/0 [megaraid_disk_16], SCSI device
/dev/bus/0 -d megaraid,17 # /dev/bus/0 [megaraid_disk_17], SCSI device
/dev/bus/0 -d megaraid,18 # /dev/bus/0 [megaraid_disk_18], SCSI device
/dev/bus/0 -d megaraid,19 # /dev/bus/0 [megaraid_disk_19], SCSI device
/dev/bus/0 -d megaraid,20 # /dev/bus/0 [megaraid_disk_20], SCSI device
/dev/bus/0 -d megaraid,21 # /dev/bus/0 [megaraid_disk_21], SCSI device
/dev/bus/0 -d megaraid,22 # /dev/bus/0 [megaraid_disk_22], SCSI device
 
Now run following command to do health check for all the devices…
for x in $(seq 9 19);do  sudo smartctl -H -d megaraid,$x  /dev/sda; done | less
The devices which failed, you would see following error…
Smartctl open device: /dev/sda [megaraid_disk_15] failed: INQUIRY failed