Hi Tomas,

On 27/12/2009, at 7:25 PM, Tomas Bodzar wrote:

> pfexec zpool set dedup=verify rpool
> pfexec zfs set compression=gzip-9 rpool
> pfexec zfs set devices=off rpool/export/home
> pfexec zfs set exec=off rpool/export/home
> pfexec zfs set setuid=off rpool/export/home

grub doesn’t support gzip - so you will need to unset that and hope that it can 
still boot with what has been written to disk.  It is possible you will need to 
backup/reinstall.

I learnt this one the hard way - don’t use gzip compression on the root of your 
rpool (you can on child filesystems that are not involved in the boot process 
though)

HTH,
James
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