[rescue] Drive Replacement Question
velociraptor at gmail.com
Wed Sep 5 21:14:38 CDT 2007
On Sep 5, 2007, at 1:33 PM, Brian Deloria wrote:
> I've got a drive I need to replace in a V240, c1t1d0 which is a root
> mirror. metastat still reports it as being ok, but I am debating
> whether to
> power the machine off and replace the disk, go through the process of
> booting the root device with less than 50% of the metainfo slices
> intact and
> just do a metareplace on it, or to delete the metadb off of the
> drive while the machine is still up in single user mode and hotswap
> device with the machine still on.
> Most of the documentation that I've found simply refers to
> replacing the
> drive after it has failed completely, or to move the metainfo over to
> another slice/drive/add a new drive none of these are possible
> based on the
> configuration by my predecessor. The situation that I'm in however
> quite fit into that and I was wondering if one way was riskier than
> other or preffered. Taking the machine offline in off hours is
> so I don't neccessarily need to do this hot.
I'd suggest removing the metadbs on the failing disk, replace it, and
rebuild the mirror.
Also, note that while the docs for SVM say 2 metadbs, you really
should have at least 3, and preferrably more, spread out across disks
and controllers. With only 2, if one disk fails and you only have 1
metadb, you have to play the "we don't have a quorum game", which is
a pain in the butt.
More information about the rescue