I can confirm this issue. Hostname is none in initrd context. Thus mdadm fails when auto scan of md arrays. One workaround is to manually set HOMEHOST (to the hostname which was used while initially creating the array) and rebuild the initial ramdisk with mkinitramfs.
-- boot from raid1 root fails because of missing hostname in initramfs https://bugs.launchpad.net/bugs/226484 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs