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Troubleshooting CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Fixing “needs maintenance” messages 84
Fixing “needs maintenance” messages 4
On rare occasions mirrors may get severely out of sync. An extreme
example is when a disk is removed from a powered system without first
being detached with a
metadetach
command. The situation is indicated
by the appearance of a
Needs maintenance
message in a
State
line of a
metastat
response. For example:
In such situations the
metareplace
command can force the recovery of
the failed slice. The
Invoke
line of the
metastat
response leads the way.
Given the response above, for example, you would enter the following:
# metastat
d13: Mirror
Submirror 0: d11
State: Needs maintenance
Submirror 1: d12
State:
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 2209680 blocks
d11: Submirror of d13
State: Needs maintenance
Invoke: metareplace d13 c0t0d0s0
Size: 2209680 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c0t0d0s0 0 No Okay
...
#
# metareplace -e d13 c0t0d0s0
# metastat
d13: Mirror
Submirror 0: d11
State: Resyncing
Submirror 1: d12
State: Needs maintenance
...
#