Re: grub2 boot root-on-zfs errors

[Andrey Borzenkov <arvidjaar@gmail.com>]

В Tue, 24 Sep 2013 18:49:33 +0300
Beeblebrox <zaphod@berentweb.com> пишет:

> Massimo:
> >> should be written as (hd0,gpt2)/mydataset/@/myfolder/myfile.
> Yes, of course - I made the mistake because I was in a hurry writing
> the mail. My current & corrected menu choices are:
> 
> menuentry "Test1-BSD-ZFS Direct-Boot" {
>     insmod zfs
>     search -s -l bsds
>     set root='hd0,gpt2'
>     kfreebsd (hd0,gpt2)/bsds/@/boot/kernel/kernel

Should not it be (hd0,gpt2)/bsds@/boot/kernel/kernel (notice lack of
slash between "bsds" and "@")?

>     kfreebsd_module_elf (hd0,gpt2)/bsds/@/boot/kernel/opensolaris.ko
>     kfreebsd_module_elf (hd0,gpt2)/bsds/@/boot/kernel/zfs.ko
>     kfreebsd_module (hd0,gpt2)/bsds/@/boot/zfs/zpool.cache
> type=/boot/zfs/zpool.cache
>     kfreebsd_loadenv (hd0,gpt2)/bsds/@/boot/device.hints
>     set kFreeBSD.vfs.root.mountfrom=zfs:bsds
> }
> menuentry 'Test2-BSD-ZFS ChainloadBTX' {
>     insmod zfs
>     set root='hd0,gpt2'
>     kfreebsd (hd0,gpt2)/bsds/@/boot/loader
> }
> 
> Neither of the above entries work. My root zpool is named "bsds" and
> the zfs is the same as the root pool. In other words, zfs list =>
> bsds   /
> bsds/usr   /usr
> bsds/var   /var
> etc...
> I have also tried (unsuccessfully) the above with
>     set root='hd0,gpt2'
>     kfreebsd /@/boot/loader  OR
>     kfreebsd (hd0,gpt2)/@/boot/loader  OR
>     kfreebsd (hd0,gpt2)//@/boot/loader
> All give "unknown filesystem" message. When I drop to grub
> command-propmt, and try:
> zfsinfo (hd0,gpt2)  => error: couldn't find a valid label
> I did not try the other 2 zfs-related commands because I do not know
> how to use them.
> 
> Finally, The grub version on the HDD is from Ubuntu-Raring (2.0). I
> should and want to re-code grub from the FreeBSD side, but I am
> hesitant since I don't want to fail and work to re-install the
> bootloader. FreeBSD's grub is also 2.0. The grub-mkconfig command
> however, generates a completely different grub.cfg. The currently
> installed (ubuntu) grub does not recognize the "t" command and neither
> the root ID c2955d0d7dd8618b (no such device)
> menuentry 'FreeBSD' --class freebsd --class bsd --class os
> $menuentry_id_option 'kfreebsd-simple-c2955d0d7dd8618b' {
> tinsmod part_gpt
> tinsmod zfs
> tif [ x$feature_platform_search_hint = xy ]; then
> t  search --no-floppy --fs-uuid --set=root  c2955d0d7dd8618b
> telse
> t  search --no-floppy --fs-uuid --set=root c2955d0d7dd8618b
> tfi
>     echo            'Loading kernel of FreeBSD kernel ...'
>     kfreebsd        //@/boot/kernel/kernel
>     kfreebsd_loadenv    //@/boot/device.hints
> tinsmod part_gpt
> tinsmod zfs
> tif [ x$feature_platform_search_hint = xy ]; then
> t  search --no-floppy --fs-uuid --set=root  c2955d0d7dd8618b
> telse
> t  search --no-floppy --fs-uuid --set=root c2955d0d7dd8618b
> tfi
>     kfreebsd_module_elf    //@/boot/kernel/opensolaris.ko
> 
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