atacontrol and SATA RAID
Giovanni P. Tirloni
gpt at tirloni.org
Fri Oct 29 05:25:18 PDT 2004
Giovanni P. Tirloni wrote:
> Hi,
>
> I've a Intel SE7210TP1 motherboard with Adaptec HostRAID and I've
> created a RAID1 array with 2 SATA disks using the following command:
>
> atacontrol create RAID1 ad4 ad6
>
> The system installed on /dev/ar0 just fine and I played a bit with
> atacontrol detaching and attaching the disks.
>
> Detaching ad6 worked without problems with the following commands:
>
> atacontrol detach 3
> atacontrol attach 3
> atacontrol rebuild 0
>
> But when I tried to detach ad4 (after rebuilding array from previous
> detachment) I got an error saying the array was broken. Now when booting
> it shows this:
>
> ar0: 152627MB <ATA RAID1 array> [19457/255/63] status: DEGRADED subdisks:
> disk0 READY on ad4 at ata2-master
> disk1 DOWN no device found for this disk
>
> but atacontrol list shows ad6 there. So my question is: what's the
> proper way of doing de attach/detach operation ?
>
I did a fresh install then turned the machine off and removed on
disk. It booted again just fine. Then I turned it off again and
inserted the disk I had removed. Now it will panic:
panic: softdep_setup_inomapdep: found inode
cpuid = 0
boot() called on cpu#0
Uptime: 2s
If I removed the disk and boot again it will work and show the
following message:
ar0: 152627MB <ATA RAID1 array> [19457/255/63] status: DEGRADED
subdisks:
disk0 READY on ad4 at ata2-master
disk1 DOWN no device found for this disk
How can I replace a failed disk with this setup ? Given what I've
read I'm not really using the controller's RAID support but only the
RAID support present in the ata subsystem. Is that true ? In the BIOS
I don't have any arrays.
Thank you,
--
Giovanni P. Tirloni
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