bugGNU GRUB - Bugs: bug #39591, grub-mkconfig fails on btrfs raid


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bug #39591: grub-mkconfig fails on btrfs raid

Submitted by:  Florian Scandella <fscan>
Submitted on:  Sun 28 Jul 2013 03:29:53 PM UTC  
Votes:  100  
Category:  Configuration Severity:  Major
Priority:  5 - Normal Item Group:  Software Error
Status:  Fixed Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Closed Release: 
Release:  other Reproducibility:  Every Time
Planned Release:  None

Fri 31 Jul 2015 07:13:03 AM UTC, comment #3: 


For some reason I preferred not using UUIDs when setting it up, can't remember why exactly..

Konstantin Svist <fry_kun>
Fri 31 Jul 2015 04:00:52 AM UTC, comment #2: 

@Konstantin: Why it tries to use devices in your case? It should be using UUID.

Andrei Borzenkov <arvidjaar>
Project Member
Fri 31 Jul 2015 12:01:32 AM UTC, comment #1: 

I'm hitting this problem in Fedora 22 with RAID1 Btrfs

As described by Florian, grub2-mkconfig gets a list of devices in GRUB_DEVICE -- which is subsequently written into generated grub.cfg like so:

        linux16 /subvol_root/boot/vmlinuz-4.1.2-200.fc22.x86_64 root=/dev/sda3
/dev/sdb3 ro rootflags=subvol=subvol_root rd.md=0 rd.lvm=0 rd.dm=0 rd.luks=0 quiet rhgb raid=noautodetect
        initrd16 /subvol_root/boot/initramfs-4.1.2-200.fc22.x86_64.img

# grub2-mkconfig -v
grub2-mkconfig (GRUB) 2.02~beta2
rpm -q grub2

Konstantin Svist <fry_kun>
Sun 28 Jul 2013 03:29:53 PM UTC, original submission:  

using grub-2.00.5043-3 from arch linux testing.

grub-mkconfig line 131:
GRUB_DEVICE="`${grub_probe} --target=device /`"

on a btrfs raid GRUB_DEVICE now holds a list of devices. this fails in several places when generating the grub.cfg.
for example the next line will fail:

GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true

a solution would be to change this to:

GRUB_DEVICE_UUID="`${grub_probe} --target=fs_uuid / 2> /dev/null`" || true

and use GRUB_DEVICE_UUID instead of GRUB_DEVICE everywhere if set.

another quick fix would be:

GRUB_DEVICE="`${grub_probe} --target=device / | head -n 1`"

to only look at the first returned device.

Florian Scandella <fscan>


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-07-31 fry_kun Carbon-Copy- => Added fry_kun
    2013-10-14 phcoder StatusNone => Fixed
        Open/ClosedOpen => Closed

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