Freebsd 13.0 with root on zfs on hyper-v 2012

[Diman]

What is the zpool pool name ?

boot

 

[Alain De Vos]

I don't see "boot",

zpool list -v
NAME        SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
sys         31.5G  8.83G  22.7G        -         -     1%    28%  1.00x    ONLINE  -
  da1p2    31.5G  8.83G  22.7G        -         -     1%  28.0%      -  ONLINE

 

[Diman]

I don't see "boot",

zpool list -v
NAME        SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
sys         31.5G  8.83G  22.7G        -         -     1%    28%  1.00x    ONLINE  -
  da1p2    31.5G  8.83G  22.7G        -         -     1%  28.0%      -  ONLINE

This pool needed for boot only, it does not imported.
I don't think the problem in my pools. Fresh install of FreeBSD 13.0 is also want boot. 12 works fine.

 

[Alain De Vos]

Do you see this screen or does booting stops before that stage?

https://forums.freebsd.org/attachments/boot-png.5481/

Was the boot zpool and contents created with FreeBSD-13 ?

 

[Diman]

Do you see this screen or does booting stops before that stage?

https://forums.freebsd.org/attachments/boot-png.5481/

Was the boot zpool and contents created with FreeBSD-13 ?

Yes, i see this screen, boot stop after trying to load kernel.
boot zpool created with FreeBSD 13.0, i just untar'ed base.txz and kernel.txz to it.

 

[Alain De Vos]

I'm out of ideas.
Just these two links,

Best practices for running FreeBSD on Hyper-V

Provides recommendations for running FreeBSD on virtual machines

docs.microsoft.com

Feature Descriptions for Linux and FreeBSD virtual machines on Hyper-V

Describes features that affect core components such as networking, storage, memory when using Linux and FreeBSD on a virtual machine

docs.microsoft.com

 

[Alain De Vos]

There is one last thing to try,
import the root zpool and copy the file /etc/zfs/zpool.cache to the boot zpool in directory /boot/zfs/

 

[SirDice]

Zpool shows ad1p2 as part of the pool. I presume with one disk there's only ad0p2. Adding the second disk makes ad1p2 appear.

 

[Diman]

There is one last thing to try,
import the root zpool and copy the file /etc/zfs/zpool.cache to the boot zpool in directory /boot/zfs/

Does not help.

 

[Diman]

Seems time to post this on bugs.freebsd.org...

 

[Cath O'Deray]

257080 – [hyper-v] FreeBSD 13.0 can't boot on hyper-v 2012 with root on zfs

bugs.freebsd.org

… hyper-v 2012​

Is that, in Windows Server 2012?

(I'm familiar only with Hyper-V in Windows 10. I installed some FreeBSD guests, probably including 13.0 on ZFS, before switching to VirtualBox.)

Hyper-V - Wikipedia

en.wikipedia.org

 

[Alain De Vos]

According to the bugzilla report root on ufs works.
But does it work with only boot on ufs and root on zfs seems an interesting question.

 

[Diman]

But does it work with only boot on ufs and root on zfs seems an interesting question.

Yes, it works.