> On Mon, 25 Jun 2012 07:49:53 -0500
> John Courcoul <nospam.jmcou
...@removethis.me.com> wrote:
> > So I was left with a SunFire V245 server that hosts several important
> > services with two internal 146GB HDDs in RAID1 mirror config,
> > containing the OS and applications and an external SAN with the data
> > files. One of the two internal HDDs has failed and I need to replace
> > it with a spare I have procured and is currently in an antistatic bag.
> > As per the manual, the way to go about the replacement will be:
> > 1. Put the new HDD in the chassis and have the OS recognize it.
> > 2. Partition the new HDD identical to the failed unit.
> > 3. Add the slices on the new as submirrors.
> > 4. Detach the submirrors of the failed HDD.
> > 5. Unmount any non-mirrored slices on the failed HDD.
> > 6. Remove the dead HDD and use as a doorstop, paperweight, etc.
> That's not quite how I would do it. This procedure creates a new set
> of submirrors, which is rather complex, error-prone, and quite
> unnecessary.
> > Am I missing anything?
> > What's the command used to add the new HDD to the system without
> > having to do an INIT 6 and reboot the system?
> Here's how I replace a failed SVM-only disk:
> First, remove the dead disk, and plug the new disk in the bay you've
> removed the dead disk from. The V245 supports hot-swapping.
> Then, use the following command to copy the vtoc from the active disk:
> # prtvtoc -s /dev/rdsk/c5t1d0s2 | fmthard -s - /dev/rdsk/c5t2d0s2
> (assuming that the running disk is c5t1d0s2 and the new, empty disk is
> c5t2d0s2).
> Finally, use metareplace to sync the slices:
> # metareplace -e themirror c5t2d0s0
> etc.
> > Do I need to format the slices and create UFS filesystems on them
> > before attaching as submirrors, or do I just do the attach with
> > METAREPLACE and let it synch itself?
> No, fmthard takes care of partitioning, and metareplace only needs a
> slice.
> Take care,
> --
> Stefaan
COOL! This really takes the pain out of the exercise. I knew slice 2 had
