This past weekend, but holiday was ruined due to a log device "replacement" gone awry.
I posted all about it here: http://jmlittle.blogspot.com/2008/05/problem-with-slogs-how-i-lost.html In a nutshell, an resilver of a single log device with itself, due to the fact one can't remove a log device from a pool once defined, cause ZFS to fully resilver but then attach the log device as as stripe to the volume, and no longer as a log device. The subsequent pool failure was exceptionally bad as the volume could no longer be imported and required read-only mounting of the remaining filesystems that I could to recover data. It would appear that log resilvers are broken, at least up to B85. I haven't seen code changes in this space so I presume this is likely an unaddressed problem. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
