On Jan 13, 2012, at 6:33 PM, Ross Walker wrote:
On Friday, January 13, 2012, Vahan Yerkanian vahan@arminco.com wrote:
Hi,
I was wondering if anyone has successfully configured two lsi/3ware 9750-4i series controllers for multipathing under CentOS 5.7 x86_64?
I've tried some basic setups with both multibus and failover settings, and had repeatable filesystem corruption over a iscsi(tgtd) or nfs3 connection.
Have you tried multipathd?
-Ross
Yes, sorry I should've been more clear. I have configured the multipathing using the multipathd using the bare-bone configuration, as it didn't have LSI/3Ware controller-specific preset in the devices {} block.
What I did was based on the [1] and in the end consisted of this (I thinned it down in the end trying to find the culprit) multipath.conf:
blacklist { devnode "sda" # the boot disk }
defaults { user_friendly_names yes }
multipaths { multipath { alias storage wwid 3600050c000015400f3ae000009040000 path_grouping_policy multibus } }
multipath -ll showed everything OK, with both sdb and sdc (the same 24 x 3tb raid6 array) as active and ready.
However no matter what I did, the filesystem is getting corrupted in 3-4 hours of active usage...
[1] http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/pdf/DM_Multipat...