Re: Replacing a RAID Drive
hi ya robert
after you install the new disks... let it do its magic to resync
itself.... ( dont write any new info to it for a while )
watch the counter/timer to see when its done resyncing back to its
happy self...
cat /proc/mdstat
- should tell you how long it has before finished sync'ing
- if your master died... you should wait...
- if your slave(mirror) died... you should be able to continue
but risky ... donno what happens when it has too much stuff to
sync up
since oyu have to install the new hard disk,,,
- i assume yu already shut down.... and installed the new disk and
formated it etc... and power up
- BEFORE installing the replacement disk... i'd make sure it still
boots in degraded mode before you install the new disk
- make sure you can boot...first...
- make a boot floppy if you have to...and test the boot floppy
- once the new disk is installed, just keep going... no need to shutdown
again.. until AFTER it finished resyncing...
c ya
alvin
On Wed, 8 Aug 2001, Robert James Kaes wrote:
> Hello All,
> I've set up a RAID 1 system with 2 hard drives in one of my computers.
> Well, the unthinkable happened and one of the hard drives has failed. The
> RAID switched over to the second hard drive without a problem, but now I
> need to replace the failed drive. I've never done this before so I'm
> wondering if there is anything I should know.
>
> The RAID system is set up with auto-detection (partition type FD). Here's
> what I plan on doing. Could anyone let me know if there is anything
> wrong with this:
>
> 1. Partition the new hard drive exactly the same as the failed drive. I
> have a copy of the partition table (sector counts) to use.
>
> 2. Format the partitions on the new drive.
>
> 3. Do a shutdown of the machine with the failed drive.
>
> 4. Replace the failed drive and boot using a boot disk which boots root
> from /dev/md0
>
> 5. Run raidhotadd on the various partitions.
>
> 6. Wait for reconstruction to finish.
>
> Is there anything I'm missing, or should watch out for? I'll be
> partitioning and formating the new hard drive on a different computer.
>
> Any help anyone can provide regarding this would be appreciated.
>
> Thanks.
> -- Robert
>
> ----------------------------------------------------------------------
> Robert James Kaes --- Flarenet Inc. --- (519) 426-3782
> http://www.flarenet.com/
> * Putting the Service Back in Internet Service Provider *
> ----------------------------------------------------------------------
>
>
>
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