Vincent Fox wrote: > Just make SURE the other host is actually truly DEAD! > > If for some reason it's simply wedged, or you have lost console access but > the hostA is still "live", then you can end up with 2 systems having access > to same ZFS pool. > > I have done this in test, 2 hosts accessing same pool, and the result is > catastrophic pool corruption. > > I use the simple method if I think hostA is dead, I call the operators and > get them to pull the power cords out of it just to be certain. Then I force > import on hostB with certainty. > -- > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
This is a common cluster scenario, you need to make sure the other node is dead, so you force that result. In lustre set-ups they recommend a STONITH (Shoot the Other Node in the Head) approach. They use a combo of a heartbeat setup like described here: http://www.linux-ha.org/Heartbeat and then something like the powerman framework to 'kill' the offline node. Perhaps those things could be made to run on Solaris if they don't already. -tim _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
