To be honest in grub rescue I can see only hd0 which leaded me to the issue (and qemu-6.2+ has a fix for it): 
https://bugzilla.proxmox.com/show_bug.cgi?id=3010


Can someone also test creating a Linux VM with /boot being a raid0 software MD device ?


Best Regards,
Strahil Nikolov

On Fri, Jan 7, 2022 at 2:15, Strahil Nikolov via Users
<users@ovirt.org> wrote:
Hi All,

I recently migrated from 4.3.10 to 4.4.9 and it seems that booting from software raid0 (I have multiple gluster volumes) is not possible with Cluster compatibility 4.6 .

I've tested creating a fresh VM and it also suffers the problem. Changing various options (virtio-scsi to virtio, chipset, VM type) did not help .

Booting from rescue media shows that the data is still there, but grub always drops to rescue.

Any hints are welcome.

Host: CentOS Stream 8 with qemu-6.0.0
oVirt 4.4.9 (latest)
VM OS: RHEL7.9/RHEL8.5

Best Regards,
Strahil Nikolov
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