Problem with hostid

[zarMarco]

Hi all, I've a question/problem. I have one zfs partition, one zpool, that contain dataset for arch/void/opensuse and freebsd. For booting linux distros I use zfsbootmenu ad this is fantastic. But when I booted freebsd at reboot I found hostid 000000 on linux distros and void and opensuse cannot boot. I've partialy solved with skip on recovery shell of zfsbootmenu and export pool, write hostid and import pool. On freebsd I've setted same hostid of linux. How can I solve this?

[ahesford]

What kernel command line shows up at the top of your ZFSBootMenu screen before you try to boot but fail?

[zarMarco]

On arch line I've "rpool/arch-gnome/root (r/o) - vmlinuz-linux rw spl_hostid=00000000"

Can I add on /etc/zfsbootmenu/config.yaml on kernel line the correct hostid?

[ahesford]

Setting spl_hostid=00000000 on the command-line is a last-ditch effort by ZFSBootMenu, but this is known to work only with dracut. Arch's mkinitcpio will not respect spl_hostid values.

The reason ZBM is trying to set spl_hostid instead of the module-level spl.spl_hostid is that the module interprets a zero value as "get the hostid from /etc/hostid".

Generally, hostid is a concept that is more trouble than it's worth. We've spent a lot of effort trying to work around some of the warts, but some are unavoidable. Your only shot here is to make sure all of your systems share a hostid. You can also try setting zbm.import_policy=force and make sure that the ZFSBootMenu image has the expected value in /etc/hostid.

I'm kicking this to discussions, as it isn't really a ZFSBootMenu issue.

[zarMarco]

But I've same problem with void and zfsbootmenu is installed on void. in fact arch is only distro that boot correctly although spl_hostid is 0000000

[zdykstra]

Double check the value of hostid across every OS that you're booting. One of them seems to be importing the pool with a hostid of '0'. Until they're all using the exact same hostid, you're going to run into issues; especially if one has a hostid of '0'. That's a horrible edge case for ZFS on Linux.

[zarMarco]

ok, when distros boot hostid is correct. This is ok eh eh