What about if the pool contains only 1 LUN
In my case, my mirrorring or other data protection mecanism is done
in my storage array so I dont want to setup a mirror on the host side
After the LUN is grown, I go in format -e to autodetect my new device
size and then I write a new EFI label on it using the new space.
Im using emc powerpath as multipathing software on the host ( solaris 10 x64 )
doing a zpool online <pool> <device>, I get a success message but the new space
isnot seen neither in df nor in zpool iostat :
# zpool iostat -v sasWork
capacity operations bandwidth
pool used avail read write read write
------------ ----- ----- ----- ----- ----- -----
sasWork 3.28G 36.5G 0 0 0 10.1K
emcpower1a 3.28G 36.5G 0 0 0 10.1K
------------ ----- ----- ----- ----- ----- -----
# zpool offline sasWork emcpower1a
cannot offline emcpower1a: no valid replicas
# zpool online sasWork emcpower1a
Bringing device emcpower1a online
# zpool iostat -v sasWork
capacity operations bandwidth
pool used avail read write read write
------------ ----- ----- ----- ----- ----- -----
sasWork 3.28G 36.5G 0 0 0 10.1K
emcpower1a 3.28G 36.5G 0 0 0 10.1K
------------ ----- ----- ----- ----- ----- -----
#
With UFS and EFI label, I can grow a filesystem without unmounting it, so it
remains available for my users i/o at all time, that is what Im trying to
acheive with ZFS, as some performance testing shows that i/o writes are a lot
faster on a ZFS filesystem
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