On Mon, 2007-06-25 at 15:24 +0100, Tim Foster wrote:
> On Mon, 2007-06-25 at 09:45 -0400, Ian Murdock wrote:
> > Anywhere I can find numbers for 1. typical space savings;
>
> Depends on the data - I'm doing a quick experiment this afternoon,
> taking a snapshot of my root filesystem, and causing all the data to get
> re-written after compression was turned on, I'll report results when
> it's done.
As promised, here's the stats for the root filesystem on my system,
which is installed with an entire cluster of nv_64 + all locales:
# zfs list tank/rootfs-nv_64 tank/rootfs-nv_64-compressed
NAME USED AVAIL REFER MOUNTPOINT
tank/rootfs-nv_64 7.35G 1.42G 6.13G legacy
tank/rootfs-nv_64-compressed 3.64G 1.42G 3.65G /tank/rootfs-nv_64-compressed
# zfs get compressratio tank/rootfs-nv_64-compressed
NAME PROPERTY VALUE
SOURCE
tank/rootfs-nv_64-compressed compressratio 1.62x -
There's a bug that's getting in the way of compressed root filesystems
at the moment unfortunately:
6541114 GRUB/ZFS fails to load files from a default compressed (lzjb) root
cheers,
tim
--
Tim Foster, Sun Microsystems Inc, Solaris Engineering Ops
http://blogs.sun.com/timf
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