What is the kernel syntax when booting from ZFS?
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I'm trying to write a grub.cfg completely from scratch that will boot one of several FreeBSD systems off of a single ZFS pool named tank with a set of root file systems named root1, root2, root3.
When I look at the official GRUB2 docs, there is one example in 5.3
menuentry "FreeBSD"
insmod zfs
search --set=root --label freepool --hint hd0,msdos7
kfreebsd /freebsd@/boot/kernel/kernel
kfreebsd_module_elf /freebsd@/boot/kernel/opensolaris.ko
kfreebsd_module_elf /freebsd@/boot/kernel/zfs.ko
kfreebsd_module /freebsd@/boot/zfs/zpool.cache type=/boot/zfs/zpool.cache
set kFreeBSD.vfs.root.mountfrom=zfs:freepool/freebsd
set kFreeBSD.hw.psm.synaptics_support=1
I figured that freepool is likely the ZFS pool name which I would replace with tank. I suspect that the x@y syntax is the way to refer to a file y on the file system x of the pool selected by the search. Then I would replace this with /root1@/boot/kernel/kernel. Sadly, the x@y syntax is undocumented and I don't want to just try with fingers crossed, but rather understand and know what I'm doing. Can anyone shed light on this?
freebsd grub2 zfs
asked Feb 17 '14 at 16:20
Jens
9991128
This question has an open bounty worth +50
reputation from Jens ending ending at 2018-10-16 19:43:14Z">in 7 days.
Looking for an answer drawing from credible and/or official sources.
Shine some light onto undocumented grub syntax.
add a comment |Â
up vote
2
down vote
favorite
I'm trying to write a grub.cfg completely from scratch that will boot one of several FreeBSD systems off of a single ZFS pool named tank with a set of root file systems named root1, root2, root3.
When I look at the official GRUB2 docs, there is one example in 5.3
menuentry "FreeBSD"
insmod zfs
search --set=root --label freepool --hint hd0,msdos7
kfreebsd /freebsd@/boot/kernel/kernel
kfreebsd_module_elf /freebsd@/boot/kernel/opensolaris.ko
kfreebsd_module_elf /freebsd@/boot/kernel/zfs.ko
kfreebsd_module /freebsd@/boot/zfs/zpool.cache type=/boot/zfs/zpool.cache
set kFreeBSD.vfs.root.mountfrom=zfs:freepool/freebsd
set kFreeBSD.hw.psm.synaptics_support=1
I figured that freepool is likely the ZFS pool name which I would replace with tank. I suspect that the x@y syntax is the way to refer to a file y on the file system x of the pool selected by the search. Then I would replace this with /root1@/boot/kernel/kernel. Sadly, the x@y syntax is undocumented and I don't want to just try with fingers crossed, but rather understand and know what I'm doing. Can anyone shed light on this?
freebsd grub2 zfs
asked Feb 17 '14 at 16:20
Jens
9991128
This question has an open bounty worth +50
reputation from Jens ending ending at 2018-10-16 19:43:14Z">in 7 days.
Looking for an answer drawing from credible and/or official sources.
Shine some light onto undocumented grub syntax.
Maybe for comparison the menu entry in these last forum posts... the "@" is "alone" there...
– jus cogens prime
Feb 17 '14 at 19:54
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I'm trying to write a grub.cfg completely from scratch that will boot one of several FreeBSD systems off of a single ZFS pool named tank with a set of root file systems named root1, root2, root3.
When I look at the official GRUB2 docs, there is one example in 5.3
menuentry "FreeBSD"
insmod zfs
search --set=root --label freepool --hint hd0,msdos7
kfreebsd /freebsd@/boot/kernel/kernel
kfreebsd_module_elf /freebsd@/boot/kernel/opensolaris.ko
kfreebsd_module_elf /freebsd@/boot/kernel/zfs.ko
kfreebsd_module /freebsd@/boot/zfs/zpool.cache type=/boot/zfs/zpool.cache
set kFreeBSD.vfs.root.mountfrom=zfs:freepool/freebsd
set kFreeBSD.hw.psm.synaptics_support=1
I figured that freepool is likely the ZFS pool name which I would replace with tank. I suspect that the x@y syntax is the way to refer to a file y on the file system x of the pool selected by the search. Then I would replace this with /root1@/boot/kernel/kernel. Sadly, the x@y syntax is undocumented and I don't want to just try with fingers crossed, but rather understand and know what I'm doing. Can anyone shed light on this?
freebsd grub2 zfs
asked Feb 17 '14 at 16:20
Jens
9991128
I'm trying to write a grub.cfg completely from scratch that will boot one of several FreeBSD systems off of a single ZFS pool named tank with a set of root file systems named root1, root2, root3.
When I look at the official GRUB2 docs, there is one example in 5.3
menuentry "FreeBSD"
insmod zfs
search --set=root --label freepool --hint hd0,msdos7
kfreebsd /freebsd@/boot/kernel/kernel
kfreebsd_module_elf /freebsd@/boot/kernel/opensolaris.ko
kfreebsd_module_elf /freebsd@/boot/kernel/zfs.ko
kfreebsd_module /freebsd@/boot/zfs/zpool.cache type=/boot/zfs/zpool.cache
set kFreeBSD.vfs.root.mountfrom=zfs:freepool/freebsd
set kFreeBSD.hw.psm.synaptics_support=1
I figured that freepool is likely the ZFS pool name which I would replace with tank. I suspect that the x@y syntax is the way to refer to a file y on the file system x of the pool selected by the search. Then I would replace this with /root1@/boot/kernel/kernel. Sadly, the x@y syntax is undocumented and I don't want to just try with fingers crossed, but rather understand and know what I'm doing. Can anyone shed light on this?
freebsd grub2 zfs
freebsd grub2 zfs
asked Feb 17 '14 at 16:20
Jens
9991128
asked Feb 17 '14 at 16:20
Jens
9991128
asked Feb 17 '14 at 16:20
Jens
9991128
asked Feb 17 '14 at 16:20
Jens
9991128
asked Feb 17 '14 at 16:20
Jens
9991128
9991128
This question has an open bounty worth +50
reputation from Jens ending ending at 2018-10-16 19:43:14Z">in 7 days.
Looking for an answer drawing from credible and/or official sources.
Shine some light onto undocumented grub syntax.
This question has an open bounty worth +50
reputation from Jens ending ending at 2018-10-16 19:43:14Z">in 7 days.
Looking for an answer drawing from credible and/or official sources.
Shine some light onto undocumented grub syntax.
Maybe for comparison the menu entry in these last forum posts... the "@" is "alone" there...
– jus cogens prime
Feb 17 '14 at 19:54
add a comment |Â
Maybe for comparison the menu entry in these last forum posts... the "@" is "alone" there...
– jus cogens prime
Feb 17 '14 at 19:54
Maybe for comparison the menu entry in these last forum posts... the "@" is "alone" there...
– jus cogens prime
Feb 17 '14 at 19:54
Maybe for comparison the menu entry in these last forum posts... the "@" is "alone" there...
– jus cogens prime
Feb 17 '14 at 19:54
add a comment |Â
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Maybe for comparison the menu entry in these last forum posts... the "@" is "alone" there...
– jus cogens prime
Feb 17 '14 at 19:54