Hello, On 11 June 2013 10:36, Richard Laager <rlaager@xxxxxxxxxx> wrote: > I have a virtualization host running on an MD root filesystem. I also > have two whole disks allocated to a virtualized guest which is doing an > MD RAID1. The host is seeing the array (i.e. it shows up > in /proc/mdstat). I'd like to prevent this, if for no other reason than > if there's a problem with that array, it prevents (or at least delays) > booting the host. > > I've tried setting "AUTO +1.x homehost -all" "AUTO homehost -all" and > even "AUTO -all" in /etc/mdadm/mdadm.conf. I'm updating the initrd and > rebooting after each change. I've tried "msdos" as well as GPT labels on > the disks used by the guest. In every case I've tried, it's still > imported. > > I'm running Ubuntu 12.04 "Precise" on both the host and the guest. > > $ uname -a > Linux HOSTNAME 3.2.0-45-generic #70-Ubuntu SMP Wed May 29 20:12:06 UTC > 2013 x86_64 x86_64 x86_64 GNU/Linux > > $ mdadm --version > mdadm - v3.2.5 - 18th May 2012 > > Does this suggest the initrd scripts are broken on Ubuntu, am I doing > something wrong, or is it just not possible to prevent this > autodetection? > > Thanks for any insight you can provide! Please unpack initrd [1] and check mdamd.conf there, as the initramfs hook may generate mdadm.conf from scratch. [2] You may want to further adjust mdadm.conf via /etc/initramfs-tools/hooks to make it the way you need it, and make your changes persist across kernel/initrd upgrades. [1] cd `mktemp -d` && gzip -dc /boot/initrd.img-`uname -r` | cpio -ivd && cat etc/mdadm/mdadm.conf [2] see /usr/share/initramfs-tools/hooks/mdadm Regards, Dmitrijs. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
