RAIDZ capacity (was ZFS version 15 committed to head)
stb at lassitu.de
Sun Jul 18 10:51:02 UTC 2010
Am 17.07.2010 um 16:30 schrieb Marco van Lienen:
> I also posted the example of creating a test raidz pool based on 3 65Mb files.
> On osol there is more available space being reported by 'zfs list' on that test raidz pool
> When I created a similar test raidz pool also based on 3 65Mb files, 'zfs list' on my FreeBSD boxes (9.0-CURRENT amd64 and 8.0-RELEASE-p2 i386) is showing much less available space.
> So regardless whether we use whole disks or simply files for testing purposes, 'zfs list' on the osol system is reporting more available space.
I suggest to read up on ZFS a bit more.
With OpenSolaris 09.06, with three 20 GB virtual disks, I'm getting this:
root at opensolaris:~# zpool create tank raidz c8t1d0 c8t2d0 c8t3d0
root at opensolaris:~# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
tank 59.5G 881K 59.5G 0% ONLINE -
root at opensolaris:~# zfs list
NAME USED AVAIL REFER MOUNTPOINT
tank 91.2K 39.0G 25.3K /tank
Which is exactly the same behavior as with FreeBSD. And of course you only get to store 40 GB worth of files on this filesystem.
Stefan Bethke <stb at lassitu.de> Fon +49 151 14070811
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