gpart bootcode for MBR + ZFS?

[Julien Cigar]

On Fri, Sep 06, 2019 at 04:13:42PM +0200, Julien Cigar wrote:
> On Fri, Sep 06, 2019 at 03:58:34PM +0200, Polytropon wrote:
> > On Fri, 6 Sep 2019 13:55:31 +0200, Julien Cigar wrote:
> > > From what I understand I /boot/boot0 (or mbr) only provides stage 0, for
> > > stage 1 and stage 2 I should use:
> > > $> dd if=/boot/zfsboot of=/dev/ada1s1 count=1
> > > $> dd if=/boot/zfsboot of=/dev/ada1s1a iseek=1 oseek=1024
> > > 
> > > However I'm getting a "Operation not permitted" even with
> > > kern.geom.debugflags=0x10 .. any idea?
> > 
> > Judging by the prompt... are you doing this as root? $ suggests
> > a non-root user, who of course is not permitted to write to a
> > disk device file directly.
> 
> Yes, I'm doing this as root .. 
> 
> I did the following:
> 
> $> gpart backup ada0 | gpart restore -F ada1
> $> gpart backup ada0s1 | gpart restore -F ada1s1
> $> zpool attach bootpool ada0s1a ada1s1a
> $> zpool attach zroot ada0s1d ada1s1d
> $> gpart bootcode -b /boot/mbr ada1
> $> sysctl kern.geom.debugflags=0x10
> $> dd if=/boot/zfsboot of=/dev/ada1s1 count=1
> $> dd if=/boot/zfsboot of=/dev/ada1s1a iseek=1 oseek=1024
> 
> (last two steps failed)
> 
> I'm wondering if this is because ZFS is involved ..?
> (although man 4 geom doesn't say anything about thatr)

ok it was because of that .., it worked with:

$> gmirror remove swap ada1s1b
$> zpool offline bootpool ada1s1a
$> zpool offline zroot ada1s1d
$> dd if=/home/jcigar/zfsboot of=/dev/ada1s1 count=1
$> dd if=/home/jcigar/zfsboot of=/dev/ada1s1a iseek=1 oseek=1024
$> gmirror insert swap ada1s1b
$> zpool online bootpool ada1s1a
$> zpool online zroot ada1s1d
$> sysctl kern.geom.debugflags=0

does it sounds ok ..?

> 
> Julien
> 
> > 
> > 
> > -- 
> > Polytropon
> > Magdeburg, Germany
> > Happy FreeBSD user since 4.0
> > Andra moi ennepe, Mousa, ...
> 
> -- 
> Julien Cigar
> Belgian Biodiversity Platform (http://www.biodiversity.be)
> PGP fingerprint: EEF9 F697 4B68 D275 7B11  6A25 B2BB 3710 A204 23C0
> No trees were killed in the creation of this message.
> However, many electrons were terribly inconvenienced.



-- 
Julien Cigar
Belgian Biodiversity Platform (http://www.biodiversity.be)
PGP fingerprint: EEF9 F697 4B68 D275 7B11  6A25 B2BB 3710 A204 23C0
No trees were killed in the creation of this message.
However, many electrons were terribly inconvenienced.
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