Comment #13 on issue 549 by [email protected]: ganeti-instance-debootstrap
grub hook fails: "unable to resolve UUID", "could not find menu.lst"
http://code.google.com/p/ganeti/issues/detail?id=549
I ran into this exact issue, and decided to spend some time to fix it. I
created a hook script that works for me(TM) using drbd and lvm. There are
several issues/quirks to 'fake' everything such that grub works in a chroot:
- For drbd, grub-2.00 is needed from testing, this is installed by this
script. For lvm, it is assumed that grub is available (put it in your
EXTRA_PKGS in /etc/default/ganeti-instance-debootstrap).
- There is no symlink created under $TARGET/dev/disk/by-uuid, this causes
grub to use the device name in the kernel boot arguments instead of the uuid
- LVM needs a loop device, otherwise grub thinks we're installing to a
partition
- For LVM, the create scripts mount /dev/<vgname>/<lvname>, but for some
reason grub looks in device.map for
/dev/mapper/<vgname>-<mangled-lvname> ...
- Two runs of grub-install are needed, the first one installs serial.mod,
then the serial port can be added to the config, and then we run again
Attachments:
grub-hook 2.7 KB
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