I'm seeing some strange behavior from OCFS2 while trying to mount mpath/dm-multipath devices under RHEL5. Sometimes I can mount the EMC-connected, dual-pathed volumes just fine and sometimes I get "device busy" errors. I've tried mounting by label and also by explicit /dev/mapper/mpathXpY name with the same unpredictable behavior. I've also noticed that sometimes when a device is successfully mounted on all nodes, each node may return different output from the mount command regarding the device mounted; e.g. /dev/mapper/mpath0p1 vs. /dev/dm-17.
One consistent aspect I have noticed whenever I receive the "device busy" error is that the /dev/dm-X names don't match up on each node. I also see that ocfs2console refers to each device by the /dev/dm-X name instead of the /dev/mapper/XX name. I guess my question is simply: Are dm-multipath devices supported under OCFS2? Are multipathed devices not recommended with OCFS2? Any documentation available on this? _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
