FastTrak TX2000 and RHEL 3.1
Samuel Flory
sflory at rackable.com
Tue Mar 2 23:49:35 UTC 2004
Jonathan Baker-Bates wrote:
>> The problem is that fasttrak doesn't have an option for jbod, or
>>normal ide mode. For what ever reason promise does give you an option
>>to create a normal drive in their bios menu. As odd as it sounds you
>>can create a raid0 array with one drive. Trust me it works despite
>>being completely wrong in so many ways. In fact I think it will let you
>>create a mirror with one drive as well.
>
>
> Ahh - that's worked! I can now boot off either disk. Thanks Samuel.
>
> I'm now trying to test the procedure for adding a replacement disk to the
> array, but the documentation on this is pretty skimpy. I'm actually mildly
> shocked by this - the section on "Reconstruction" in the Software RAID Howto
> is bordering on the comic, and there's no documentation at all for mdadm, it
> seems. So I'll see if this works:
>
> http://www.e-smith.org/docs/howto/RAID-recovery-howto.html
>
There really are far to many unmaintained howtos floating around.
> At least it has a date on it...
It's really quite easy to replace a drive.
1)Just create the same partition layout on the new drive.
You just want to do this*:
`fdisk -d /dev/hde > /etc/hde.sfdisk`
`fdisk -d /dev/hdg > /etc/hdg.sfdisk`
then if hdg fails `sfdisk /dev/hdg < /etc/hdg.sfdisk`
2)Do a 'raidhotadd /dev/md(array number) /dev/hd(partition number) for
each array. Look in /etc/raidtab for details on what maps to what.
*Personally I'm really lazy so I do this :
dd if=/dev/gooddrive of=/dev/replacementdrive count=1024
echo "w" |fdisk /dev/replacementdrive
(copy the partition table from the good drive to the new drive, and use
fdisk to force linux to reread the partition table.)
--
Unless you can't avoid it never put a
serial number on any of your systems!!
(The Numberless Rule of Hardware Acquisition)
Sam Flory <sflory at rackable.com>
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