On Sun, May 30, 2010 at 2:37 PM, Sandon Van Ness <[email protected]> wrote:
> ZFS:
> r...@opensolaris: 11:22 AM :/data# df -k /data
'zfs list' is more accurate than df, since it will also show space
used by snapshots. eg:
bh...@basestar:~$ df -h /export/home/bhigh
Filesystem size used avail capacity Mounted on
tank/export/home/bhigh
5.3T 8.2G 2.8T 1% /export/home/bhigh
bh...@basestar:~$ zfs list tank/export/home/bhigh
NAME USED AVAIL REFER MOUNTPOINT
tank/export/home/bhigh 51.0G 2.85T 8.16G /export/home/bhigh
> zpool list shows the raw capacity right?
Yes. It shows the raw capacity, including space that will be used for
parity. Its USED column includes space used by all active datasets and
snapshots.
> So basically with JFS I see no decrease in total volume size but a huge
> difference on ZFS. Is this normal/expected? Can anything be disabled to
> not lose 500-600 GB of space?
Are you using any snapshots? They'll consume space.
What is the recordsize, and what kind of data are you storing? Small
blocks or lots of small files (< 128k) will have more overhead for
metadata.
-B
--
Brandon High : [email protected]
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