os-prober does not detect ubuntu installations in btrfs subvolumes with EFI partitioning
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| os-prober |
New
|
Unknown
|
|||
| os-prober (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Bug Description
I am running Kubuntu 14.04 beta 1 installed in a btrfs filesystem on a GPT-partitioned hard disk (my machine has an EFI bios).
I also have Ubuntu 13.10 installed on the same machine in another partition, also btrfs.
os-prober from Kubuntu 14.04 does not detect the 13.10 kernels, most likely because they lie in the normal subvolume @ created by Ubuntu. If I mount the @ subvolume somewhere and then run update-grub the kernels are detected, but the path written in grub.cfg is then wrong because it ignores the subvolume and treats the kernels like they are in the btrfs root volume.
This is always reproduceable: Install Ubuntu 13.10 in one btrfs partition, install Kubuntu 14.10 in another. Run update grub in Kubuntu 14.10. The Ubuntu 13.10 kernels are not detected.
This is the os-prober package info:
Package: os-prober
Architecture: amd64
Version: 1.63ubuntu1
| Launchpad Janitor (janitor) wrote | #1 |
| Changed in os-prober (Ubuntu): | |
| status: | New → Confirmed |
| Bougron (fbougron) wrote | #2 |
| Bougron (fbougron) wrote | #3 |
| Esokrates (esokrarkose) wrote | #4 |
| Changed in os-prober: | |
| status: | Unknown → New |
Status changed to 'Confirmed' because the bug affects multiple users.