Problem restarting gvinum raid-5

[Goran Lowkrantz]

Hi,

We have a gvinum raid-5 volume that that we had to replace a disk on and 
after that we cant get the new subdisk starting.

Here are the things we did:
1: Replace disk and boot singleuser to fdisk and lable new disk:
gvinum -> list
5 drives:
D disk4                 State: up       /dev/da5s1a     A: 0/17492 MB (0%)
D disk3                 State: up       /dev/da4s1a     A: 0/17492 MB (0%)
D disk2                 State: up       /dev/da3s1a     A: 0/17492 MB (0%)
D disk1                 State: up       /dev/da2s1a     A: 0/17492 MB (0%)

1 volume:
V imap                  State: up       Plexes:       1 Size:         68 GB

1 plex:
P imap.p0            R5 State: up       Subdisks:     5 Size:         68 GB

5 subdisks:
S imap.p0.s0            State: up       D: disk1        Size:         17 GB
S imap.p0.s1            State: up       D: disk2        Size:         17 GB
S imap.p0.s2            State: up       D: disk3        Size:         17 GB
S imap.p0.s3            State: up       D: disk4        Size:         17 GB
S imap.p0.s4            State: up       D: disk5        Size:         17 GB

After fixing the new disk partition we did a saveconfig and reboot:
gvinum -> list
5 drives:
D disk5                 State: up       /dev/da6s1a     A: 0/17492 MB (0%)
D disk4                 State: up       /dev/da5s1a     A: 0/17492 MB (0%)
D disk3                 State: up       /dev/da4s1a     A: 0/17492 MB (0%)
D disk2                 State: up       /dev/da3s1a     A: 0/17492 MB (0%)
D disk1                 State: up       /dev/da2s1a     A: 0/17492 MB (0%)

1 volume:
V imap                  State: up       Plexes:       1 Size:         68 GB

1 plex:
P imap.p0            R5 State: up       Subdisks:     5 Size:         68 GB

5 subdisks:
S imap.p0.s4            State: stale    D: disk5        Size:         17 GB
S imap.p0.s3            State: up       D: disk4        Size:         17 GB
S imap.p0.s2            State: up       D: disk3        Size:         17 GB
S imap.p0.s1            State: up       D: disk2        Size:         17 GB
S imap.p0.s0            State: up       D: disk1        Size:         17 GB

Tried start on plex and subdisk, nnot working. Finally, to get plex into 
degraded mode we did a setstate down imap.p0.s4.
gvinum -> list
5 drives:
D disk5                 State: up       /dev/da6s1a     A: 0/17492 MB (0%)
D disk4                 State: up       /dev/da5s1a     A: 0/17492 MB (0%)
D disk3                 State: up       /dev/da4s1a     A: 0/17492 MB (0%)
D disk2                 State: up       /dev/da3s1a     A: 0/17492 MB (0%)
D disk1                 State: up       /dev/da2s1a     A: 0/17492 MB (0%)

1 volume:
V imap                  State: up       Plexes:       1 Size:         68 GB

1 plex:
P imap.p0            R5 State: degraded Subdisks:     5 Size:         68 GB

5 subdisks:
S imap.p0.s4            State: down     D: disk5        Size:         17 GB
S imap.p0.s3            State: up       D: disk4        Size:         17 GB
S imap.p0.s2            State: up       D: disk3        Size:         17 GB
S imap.p0.s1            State: up       D: disk2        Size:         17 GB
S imap.p0.s0            State: up       D: disk1        Size:         17 GB

and here we are. Start on volume or plex give errno 16, start on subdisk 
gives  can't start: cannot start 'imap.p0.s4' - not yet supported.

Can't find any descriptions of the proper way to do disk replacement, so if 
this is wrong, I'd love to get updated. And how do we get the current 
situation upa nd running?

Regards,
	Göran



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  Goran Lowkrantz <goran.lowkrantz at ismobile.com>
  System Architect, isMobile, Aurorum 2, S-977 75 Luleå, Sweden
  Phone: +46(0)920-75559
  Mobile: +46(0)70-587 87 82 Fax: +46(0)70-615 87 82

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