Hi all, I've been using DRBD/Heartbeat for a while now in heartbeat v1 (haresources) style configuration.
I'm now moving to heartbeat v3/pacemaker because i like the resource level failure detection. I've created a working setup: - 2-node cluster - MDADM RAID1 of two disks (sdb and sdc) on both nodes (md0) - DRBD on top of the RAID1's (drbd0) - iscsitarget (IET) exporting /dev/drbd0 - failover IP - node 1 is preferred master. - Using the Linbit OCF RA script that comes with v8.3.7. I tested the following situation: - I pulled out BOTH sdb and sdc on node 1. - Did a write action on the iscsitarget from a client machine. - DRBD (on-io-error detach) detached the primary node 1 and became: Primary/Secondary - Diskless/UpToDate - The performance degraded significantly after it became diskless. Is it possible for the Linbit OCF RA script to detect that a low level IO error occured on the DRBD backed storage (md0)? What I would like is that in a case of low level failure (software raid failure) that a failover takes place and node 2 becomes the primary because now that doesn't happen. Kind regards, Caspar Smit _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user
