Jorgen Lundman wrote:
Jorgen Lundman wrote:
However, "zpool detach" appears to mark the disk as blank, so nothing
will find any pools (import, import -D etc). zdb -l will show labels,
For kicks, I tried to demonstrate this does indeed happen, so I dd'ed
the first 1024 1k blocks from the disk, zpool detach it, then dd'ed the
image back out to the HDD.
Pulled out disk and it boots directly without any interventions. If only
zpool detach had a flag to tell it not to scribble over the detached disk.
This is a known issue. The simple case is actually quite easy (and I
had nearly working code for it pretty quickly). What I mean by the
simple case is 2 disks in a mirror. What if it was actually a 4 disk
or 48 disk pool setup as mirrored pairs - that is much harder to deal
with. Or the cases where there are cache and log devices in the pool
make it harder to deal with as well (not really an issue for root pools
though).
Maybe the 2 disk mirror is a special enough case that this could be
worth allowing without having to deal with all the other cases as well.
The only reason I think it is a special enough cases is because it is
the config we use for the root/boot pool.
See 6849185 and 5097228.
--
Darren J Moffat
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