Date: Sat, 27 Dec 2014 16:10:08 +0000 From: Dr Josef Karthauser <joe@karthauser.co.uk> To: Warren Block <wblock@wonkity.com> Cc: "stable@freebsd.org" <stable@freebsd.org> Subject: Re: Creating a bootable ZFS disk? Message-ID: 3B9A95A5-CCCE-4B75-89B3-5F08361DCFD9.goodhumans@emailganizer.goodhumans.com In-Reply-To: <alpine.BSF.2.11.1412270824250.63470@wonkity.com> References: <1548B1FF-36E2-4AE4-ADD4-3B8872A9DF55@tao.org.uk>, <alpine.BSF.2.11.1412270824250.63470@wonkity.com>
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Ahha, the 4k alignment is plausible! I thought that that was automatic these days. I'll give it a go.
Do I also need to have a zfs pool cache on the root disk?
Joe
On 27 Dec 2014 at 3:27:47 pm GMT, Warren Block <wblock@wonkity.com> wrote:
> On Sat, 27 Dec 2014, Dr Josef Karthauser wrote:
>
> > I?m trying to create a new ZFS pool from an existing one (the new one is 4k aligned and the old one is legacy 512b).
> >
> > But, I can?t get it to boot! Not sure what I?m doing wrong.
> >
> > I thought I could create the new pool, and use ?zfs send/recv? to copy the existing pool and then boot onto the new disk, but the kernel doesn?t load? :(.
> >
> > Does anyone know what I?m doing wrong?
> >
> > Here?s my recipe:
> >
> > # gpart create -s gpt diskid/DISK-NEW-DISK
> > # gpart add -s 64K -t freebsd-boot diskid/DISK-NEW-DISK
> > # gpart add -t 8G freebsd-swap diskid/DISK-NEW-DISK
> > # gpart add -t freebsd-zfs diskid/DISK-NEW-DISK
> > # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 diskid/DISK-NEW-DISK
>
> Those partitions are probably not aligned to 4K. Add "-a4k" to the gpart add commands. (Remember that ashift is filesystem block size, not alignment.)
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