[lxc-users] Live migration from UEFI to BIOS host

[McDonagh, Ed]

Dear experts

With lxd 2.0.5, I can now take stateful snapshots which I guess confirms closing of https://bugs.launchpad.net/ubuntu/+source/criu/+bug/1626100, though I haven't tested it thoroughly.

I now have the following error when trying to do a live migration from h2 (a UEFI booted host, I now discover) to h1 (a BIOS booted host):

error: migration restore failed
(00.008782) Warn  (cr-restore.c:1159): Set CLONE_PARENT | CLONE_NEWPID but it might cause restore problem,because not all kernels support such clone flags combinations!
(00.298284)      1: Error (mount.c:2406): mnt: Can't mount at ./sys/firmware/efi/efivars: No such file or directory
(00.298292)      1: Error (mount.c:2555): mnt: Unable to statfs ./sys/firmware/efi/efivars: No such file or directory
(00.314227) Error (cr-restore.c:1352): 5857 killed by signal 9
(00.358573) Error (cr-restore.c:2182): Restoring FAILED.

I am assuming the issue is that h1 does not have a /sys/firmware/efi folder.

Is it not possible to migrate in these circumstances?

Thanks in advance.

Ed

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