ElGringo
14 years agoLevel 6
PureDisk Freeze randomly
Hi all,
Some of my Puredisk node freeze randomly.
We run PureDisk6.6.1 in a clustered Storage Pool.
BIOS upgrade was a good move as was PD6611 since a kernel upgrade is included. Check the /var/log/mcelog ...if it is zero byte in size, good. If not, could be CPU issues.
PDOS 6.6+ has some stuff that really doesn't have to run in most environments...if you aren't using iSCSI, turn off the open-iscsi daemons (service open-iscsi stop; chkconfig open-iscsi off), same goes for novell-zmd, postfix if you're not using sendmail, maybe powersaved....check 'ps' for others.
You might start a script to execute a series of commands, output (append) to file every 3 minutes, commands like 'ps faux', vmstat, iostat, top, free, 'cat /proc/meminfo', 'netstat -s', lsof. If the issue reoccurs, view the bottom of the output file your script appended to. Doing that you might find swap depeted, some process using up RAM/CPU, etc. Grab that and /var/log/messages. Hopefully there will be clues.