Hi,
I thought that this question must have been answered already, but I have
not found any explanations. I'm sorry in advance if this is redundant, but:
Why exactly doesn't ZFS let me detach a device from a degraded mirror?
haggis:~# zpool status
pool: rmirror
state: DEGRADED
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://www.sun.com/msg/ZFS-8000-9P
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
rmirror DEGRADED 0 0 0
c15t0d0s0 ONLINE 0 0 0
c16t0d0s0 DEGRADED 0 0 0 too many errors
errors: No known data errors
haggis:~# zpool detach rmirror c16t0d0s0
cannot detach c16t0d0s0: only applicable to mirror and replacing vdevs
Background: My system was crashing twice during a zpool scrub,
so I thought I should avoid a third scrubbing attemt and rather detach
and re-attach the mirror to achieve a full re-sync.
this is snv_93
Ref:
http://docs.sun.com/app/docs/doc/817-2271/gcfhe?l=en&a=view&q=%22only+applicable+to+mirror+and+replacing+vdevs%22
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