On Wed, Apr 01, 2009 at 01:41:06AM +0300, Dimitar Vasilev wrote:
> Hi all,
> Could someone give a hint if it's possible to create rpool/tmp, mount
> it as /tmp so that tmpfs has some disk-based back-end instead of
> memory-based size-limited one.

You mean you want /tmp to be a regular ZFS filesystem instead of a
tmpfs one.  Yes, that's possible.

There is no dedicated disk back end for tmpfs, only swap (which may
include disk-based backing store).

> When I do regular creation of rpool/tmp without setting any mountpoint
> options and entry in vfstab i'm dropped into single user, because
> fs-local service cannot mount the rpool/tmp fs.
> What I could do is set the mount point to legacy and describe it in
> vfstab for mounting so that tmpfs entry does not get blocked.

You mean so the /tmp entry doesn't get blocked (it won't be a tmpfs
entry if you do this).

Do you need a /tmp entry at all for this?  If you just set the
mountpoint to be /tmp (leave it out of vfstab entirely), then I think
it'll work, but it won't be available until all the ZFS filesystems
mount.

I'll have to try that and see if anything breaks.

-- 
Darren
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