Hi Michael,
For a RAIDZ pool, the zpool list command identifies the "inflated" space
for the storage pool, which is the physical available space without an
accounting for redundancy overhead.
The zfs list command identifies how much actual pool space is available
to the file systems.
See the example of a RAIDZ-2 pool created below with 3 44 GB disks.
The total pool capacity reported by zpool list is 134 GB. The amount of
pool space that is available to the file systems is 43.8 GB due to
RAIDZ-2 redundancy overhead.
See this FAQ section for more information.
http://hub.opensolaris.org/bin/view/Community+Group+zfs/faq#HZFSAdministrationQuestions
Why doesn't the space that is reported by the zpool list command and the
zfs list command match?
Although this site is dog-slow for me today...
Thanks,
Cindy
# zpool create xpool raidz2 c3t40d0 c3t40d1 c3t40d2
# zpool list xpool
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
xpool 134G 234K 134G 0% ONLINE -
# zfs list xpool
NAME USED AVAIL REFER MOUNTPOINT
xpool 73.2K 43.8G 20.9K /xpool
On 03/15/10 08:38, Michael Hassey wrote:
Sorry if this is too basic -
So I have a single zpool in addition to the rpool, called xpool.
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
rpool 136G 109G 27.5G 79% ONLINE -
xpool 408G 171G 237G 42% ONLINE -
I have 408 in the pool, am using 171 leaving me 237 GB.
The pool is built up as;
pool: xpool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
xpool ONLINE 0 0 0
raidz2 ONLINE 0 0 0
c8t1d0 ONLINE 0 0 0
c8t2d0 ONLINE 0 0 0
c8t3d0 ONLINE 0 0 0
errors: No known data errors
But - and here is the question -
Creating file systems on it, and the file systems in play report only 76GB of
space free....
<<<<SNIP FROM ZFS LIST>>>>>>>
xpool/zones/logserver/ROOT/zbe 975M 76.4G 975M legacy
xpool/zones/openxsrvr 2.22G 76.4G 21.9K /export/zones/openxsrvr
xpool/zones/openxsrvr/ROOT 2.22G 76.4G 18.9K legacy
xpool/zones/openxsrvr/ROOT/zbe 2.22G 76.4G 2.22G legacy
xpool/zones/puggles 241M 76.4G 21.9K /export/zones/puggles
xpool/zones/puggles/ROOT 241M 76.4G 18.9K legacy
xpool/zones/puggles/ROOT/zbe 241M 76.4G 241M legacy
xpool/zones/reposerver 299M 76.4G 21.9K /export/zones/reposerver
So my question is, where is the space from xpool being used? or is it?
Thanks for reading.
Mike.
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