ZFS on entire disks setup

[Olivier Smedts]

2009/9/26 krad <kraduk at googlemail.com>:
> 2009/9/26 Stefan Bethke <stb at lassitu.de>
>
>> Am 26.09.2009 um 13:39 schrieb Dmitry Morozovsky:
>>
>>  Dear colleagues,
>>>
>>> is there a way to configure ZFS-only setup without partitions?
>>>
>>> I tried to reproduce the trick with `skip=1 seek=1024', and have
>>> loot/loader
>>> running, but it does not see the pool.
>>>
>>
>> This sequence is working for me:
>> dd if=/boot/zfsboot of=/dev/da0 count=1
>> dd if=/boot/zfsboot of=/dev/da0 skip=1 seek=1024
>> zpool create zroot /dev/da0
>> zpool set bootfs=zroot zroot
>> cd /usr/src && make installworld installkernel distribution DESTDIR=/zroot
>> cp /boot/loader.conf /zroot/boot/loader.conf
>> cp /etc/rc.conf /zroot/etc/
>> touch /zroot/etc/fstab
>> echo 'zfs_load="YES"' >>/zroot/boot/loader.conf
>> echo 'vfs.root.mountfrom="zfs:zroot"' >>/zroot/boot/loader.conf
>> zpool export zroot
>> zpool import zroot
>> cp /boot/zfs/zpool.cache /zroot/boot/zfs/
>> zfs set mountpoint=legacy zroot
>>
>> ... except that it doesn't anymore.  I saw this working about two months
>> ago, but now it fails to mount root.  Verbose boot doesn't give any
>> indication why ZFS can't find the pool.
>>
>>
>> Stefan
>>
>> --
>> Stefan Bethke <stb at lassitu.de>   Fon +49 151 14070811
>>
>>
>>
>>
>>
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>
>
> have the performance issues with zvols been fixed. I remember a while ago it
> wasn't a good idea to run swap on a zvol. This is why i left a partition
> free for swap

Still not a good idea, I've got lockups for many minutes when
consuming heavy memory ressources, for example when doing a "make" in
ports/emulators/virtualbox with firefox and amarok opened. I've got
2GB RAM on amd64.

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-- 
Olivier Smedts                                                 _
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