atacontrol Raid, cannot re-add member to array

[c***@swistgroup.com]

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Hi all,

I'm investigating atacontrol raid as an alternative to vinum.
So far it has worked great.

That's until I unplugged one of the array members.
The system boots up fine from the second disk,=20
but the problem ... I can't get atacontrol to rebuild the mirror onto =
the disk
that was removed.=20

I have tried every command on the atacontrol man page, but to no avail.

OS : FreeBSD 4.10=20
System : P3
IDE controller : Intel ICH2 ATA100 controller=20
and 2 x 40 GB disks.

On FreeBSD 5 atacontrol has an additional command "addspare" that I =
have used
with success to=20
add a disk to a RAID1 array and rebuild it.

Now that you know some of the details,
here are the questions
1.. How "safe" is the atacontrol raid feature?=20
2.. How do I rebuild an atacontrol RAID1 array on FreeBSD 4.10?


Any help would be appreciated, I have been at it the whole day!

Regards=20
Conrad Burger=20
Support Engineer=20
TEBiVO Business Continuity=20
Cell: [phone]=20
conrad[at]tebivo[dot]com=20
Tel: [phone] Fax: [phone]=20
=20

Click here to view our e-mail legal notice:=20
http://www.tebivo.com/email.htm or call: [phone]=20

[a***@ambrisko.com]

Harald Schmalzbauer writes:
| I've never tried ataraid with "non-raid" controllers but I doubt that
| detach/attach would work. I asked S?ren about the missing addspare in -stable
| but never got any answer.

I've add addspare and some other features in my 4.10 Release patches:
http://www.ambrisko.com/doug/ata/ata_stable_sata_5.patch

You might want to give that a try.

Doug A.