[CentOS] Recover RAID
Christopher Chan
christopher.chan at bradbury.edu.hk
Thu Mar 4 05:34:53 UTC 2010
On Thursday, March 04, 2010 01:15 PM, Jeff Sadino wrote:
> Backups? I wish :) I will now.
/me hands Jeff a big clueby4 to use on the former admin.
> But looking closer, that md1 is not my OS partition, just a data
> partition. If I take that md1 entry out of the raidtab file and restart
> the computer, I would think that it would start up just fine, minus the
> data partition (and for the moment neglecting any vital programs that
> might be installed on that partition). My question is when I start the
> computer back up, in order to start up without that partition there any
> more, will the OS write any new files or anything that will not be
> reversible?
Yes...logs mainly. Most probably not reversible that lot. You may need
to comment out the entry in /etc/fstab for md1 too. You might see
messages from services tied to the data partition and if they get in the
way of start up, just go into single-user mode and disable them...
>
> Thank you again,
> Jeff
>
> On Wed, Mar 3, 2010 at 6:40 PM, Ross Walker <rswwalker at gmail.com
> <mailto:rswwalker at gmail.com>> wrote:
>
> On Mar 3, 2010, at 10:24 PM, Jeff Sadino <jsadino.queens at gmail.com
> <mailto:jsadino.queens at gmail.com>>
> wrote:
>
> > Ok, I'm learning a lot about raids and what to do, and what not to
> > do. Looking at some info I had before, md1 was 200GB in size, which
> > makes sense, but it was only 39GB full. The way I repartitioned
> > drive 1, I probably overwrote only about 11GB. Does that make it
> > any easier to recover any amount of the raid? Is there some sort of
> > "recover lost partitions" option in Linux or gparted?
>
> Don't you have backups of this data?
>
> You can just re-create the raid0 and restore the data.
>
> -Ross
>
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