On 04/05/2012 05:38 AM, Jonathan Vomacka wrote:
CentOS Community,
What commands can I use to check the disk health of the system when LVM2 is being used on top of a RAID 10 using a HARDWARE 3ware raid card. The OS sees a hardware raid usually as one big drive. Is there a way to check the disks individually to see if any are failing, or throwing hard or scsi transport errors?
yum install smartmontools
smartctl -a /dev/twa0 -d 3ware,0
You can check each drive by changing '3ware,0' to '3ware,x' where x is the drive #.
You can automate the checks by configuring /etc/smartd.conf using lines like:
/dev/twa0 -d 3ware,0 -H -l selftest -l error -o on -S on -s (O/../../6/22|S/../../1/2|L/../../2/1) -m root@yourdomain.com
Remember to comment out the default line (the first line of /etc/smartd.conf).