Re: [cobalt-users] Disks when upgrading xtr to 550

["Chris L" <clathem@xxxxxxxxxxxxx>]

> I'm going through the attempt to upgrade my xtr to use 550
> software. The first time through, I told it to use raid 5 the first
> time through with disasterous results because the default 550 CD does
> not support it. Effectively that left me with an unstable 30G of storage.
>
> I am trying again with RAID 0 - which was my only other choice.

Well, you could use RAID 1.

I originally ported my XTR to a 550. Because I had 4x80 Gigs in my XTR I
wanted to continue using RAID5. Since the OSRCD wouldn't allow me to do it,
I rebuilt the CD and forced the cd to setup RAID5. It worked, but after
doing more extensive toying with the server, it seemed a bit sluggish,
especially when rebuilding a failed drive. I don't know what the cause of
the lag was; I never really spent much time looking for it. I just went
ahead and pulled two of the 4 drives out of the server, and then restored it
again with RAID 1. Since then, I've been running the 550 OS and all cobalt
kernel updates and patches and have seen no negatives. You might want to
consider doing this as well.

>Before I go ahead an finish updating I'd like to know how to verify
>that this set up - is stable and useable.

>Filesystem            Size  Used Avail Use% Mounted on
>/dev/md1              3.9G  857M  3.0G  22% /
>/dev/md2              1.5G   12M  1.4G   1% /var
>none                 1008M     0 1008M   0% /dev/shm
>/dev/md4               88G  152M   88G   1% /home

Everything you posted looks good to me, but I would be hesitant on using
RAID 0 unless I really needed the speed or disk space more than I needed
redundancy.

Regards,
Chris