Cannot reconstruct RAID: raidctl: no match for wd1a

[Frank Wille <frank%phoenix.owl.de@localhost>]

Hi!

(Note: This is on a Synology DS209J, running 10.0 of NetBSD/sandpoint!)

After a power failure I got a problem with the /dev/wd1a component
of my /dev/wd0a + /dev/wd1a RAID-1 and the parity couldn't be
rewritten:
raid0: Error re-writing parity (1)!

# raidctl -s raid0
Components:
           /dev/wd0a: optimal
           /dev/wd1a: failed
No spares.
Component label for /dev/wd0a:
   Row: 0, Column: 0, Num Rows: 1, Num Columns: 2
   Version: 2, Serial Number: 2024073001, Mod Counter: 253
   Clean: No, Status: 0
   sectPerSU: 128, SUsPerPU: 1, SUsPerRU: 1
   Queue size: 100, blocksize: 512, numBlocks: 134209408
   RAID Level: 1
   Autoconfig: Yes
   Root partition: Force
   Last configured as: raid0
/dev/wd1a status is: failed.  Skipping label.
Parity status: DIRTY
Reconstruction is 100% complete.
Parity Re-write is 100% complete.
Copyback is 100% complete.


I tried to reconstruct the failed component from wd0, but raidctl
insists that it doesn't know wd1a:

# raidctl -f /dev/wd1a raid0
raidctl: no match for `wd1a'
# raidctl -a /dev/wd1a raid0
raidctl: no match for `wd1a'
# raidctl -F /dev/wd1a raid0
raidctl: no match for `wd1a'

Then I deleted the MBR and diskabel from wd1 and rebooted.
Now "raidctl -s raid0" shows "component1" instead of wd1a, but the
problem is similar. After restoring (and verifying!) the MBR and
the disklabel I still cannot add wd1a as a spare:

# raidctl -f component1 raid0
# raidctl -a /dev/wd1a raid0
raidctl: no match for `wd1a'

# disklabel wd1
[...]
5 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a: 134209536      4096       RAID                     # (Cyl.      4*- 
133148*)
 c: 4294967295         0     unused      0     0        # (Cyl.      0 
- 4294967295*)

I'm confused. Because I definitely followed a similar approach when
I initially created the RAID. And that worked.

The rest of that 4TB disk is managed via a wedge and GPT. In case
it is related, the wedge and a second RAID is added in /etc/rc.local:

[...]
/sbin/dkctl wd0 addwedge NASwd0 134220240 7679816928 raidframe
/sbin/dkctl wd1 addwedge NASwd1 134220240 7679816928 raidframe
/sbin/raidctl -c /etc/raid1.conf raid1
/bin/sleep 1
# NASdata wedge should now exist via GPT from raid1
/sbin/fsck NAME=NASdata
/sbin/mount NAME=NASdata

Any ideas?

--
Frank Wille