Posts Tagged ‘zfs’

ZFS snapshotting and mirroring

Monday, June 2nd, 2008

Although ZFS seamlessly will support synchronous mirrors over multiple backend storage arrays, there are some advantages in keeping the mirror process asynchronous.

ZFS haul-over in the face of a box shutdown.

Tuesday, May 6th, 2008

I’m now using default zpool paths (which implies an automatic import and mount on reboot).

I just imported the bb-archive.isys zpool onto the first host, then rebooted it. After it had shut down, I forcibly imported the zpool onto the second host. Now waiting for the first to come back up. It should, perhaps, complain that the zpool is owned by someone else, but should not do a forcible reimport…

And alas, that’s not what happens. So:

I’m going to use altroots for all zpools. Unfortunately, this forces the subdirs to appear only mounted under the altroot. Not quite the combination I was after.

Networker, zfs.

Tuesday, May 6th, 2008

OK, so nsr picks up the filesystems to try to save from /etc/vfstab. Fine, except that (a) that means it tries to back up the contractfs(!) and (b) ZFS doesn’t use vfstab entries for its filesystems.

Solution: specify the service IP address explicitly together with a bunch of paths under the networker configuration.