[mythtv-users] FC5 and RAID

[Michael Haan]

On 2/2/06, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
>
> On 2/2/06, Michael Haan <michael.haan at gmail.com> wrote:
> >
> > On 2/2/06, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> > >
> > > On 2/1/06, Michael Haan <michael.haan at gmail.com> wrote:
> > > > Ok, a little off-topic, but since this is my myth box and I'm going
> with
> > FC5
> > > > for myth support reasons.....
> > > >
> > > > I've just installed FC5 x86_64 on my box and I'm trying to set-up my
> > file
> > > > system.  The OS lives on /dev/hda along with swap and /boot.  I've
> got
> > four
> > > > four 250G SATA drives that previously lived in a RAID 5 config under
> > FC4.
> > > > Now, when I try to create a RAID 5 array on these devices under FC5,
> it
> > > > tells me that each of these devices are busy.  I suspect this has to
> do
> > with
> > > > new options I saw for creating LVMs on install, but I don't want an
> LVM.
> > > > Anyone know what's going on here or how to get around it?
> > >
> > > from my understandig, FC5 should load up the four drives as a their
> > > old RAID array if you place the same config like you had for FC4 in
> > > FC5 for mdadm. I assume you were using software RAID?
> > >
> >
> > Yep, software raid using mdadm.  I saved-off the conf file, but the fs
> from
> > those drives is gone.  When I try using mdadm to create an array on
> those
> > drives, mdadm tells me for each drive that "Device or resource is
> busy".  So
> > I made sure that none were mounted, and then created a raid partition on
> > each but I still get the same result.
>
> how is the file system gone? did you manually erase it? using cfdisk
> on the drives should show the partition type as the linux raid type,
> then if you copy the conf info over and reboot the kernel should do
> its thing and give you /dev/md0 (or whatever you set it at) as a
> mountable partition. Of course, you may have damaged it in your
> playing around, but its worth a shot as the information could well
> still be there.
>
> --
> Steve
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>

Yes, in trying to install FC5 I offloaded the raid info to an external drive
then formatted each drive seperately as ext3.  Now I've repartitioned each
drive as a raid drive.  I have not tried just copying over my mdadm.conf so
I will, but I'm still unclear why those drives are reported as busy when I
try to create a new array on them.
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