Ubuntu
grub2 package

  1. Bug #1817713
  2. Comment #6

Comment 6 for bug 1817713

Revision history for this message
In , bugproxy (bugproxy-redhat-bugs) wrote :

------- Comment From <email address hidden> 2017-06-12 17:33 EDT-------
As expected, migrating /boot to raid 1 using metadata 1.0 when it is the first partition after prep fails:

[root@rhel-grub2-1 ~]# mdadm -D /dev/md0
/dev/md0:
Version : 1.0
Creation Time : Mon Jun 12 17:22:07 2017
Raid Level : raid1
Array Size : 1048512 (1023.94 MiB 1073.68 MB)
Used Dev Size : 1048512 (1023.94 MiB 1073.68 MB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent

Update Time : Mon Jun 12 17:26:45 2017
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

Name : rhel-grub2-1:0 (local to host rhel-grub2-1)
UUID : 537bfbf4:0b89fb58:f50f14c3:ba5f2bf3
Events : 33

Number Major Minor RaidDevice State
2 253 2 0 active sync /dev/vda2
1 253 17 1 active sync /dev/vdb1

[root@rhel-grub2-1 ~]# parted /dev/vda u s p
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 2621440s
Sector size (logical/physical): 4096B/4096B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 256s 1279s 1024s primary boot, prep
2 1280s 263423s 262144s primary raid
3 263424s 2360575s 2097152s primary

[root@rhel-grub2-1 ~]# parted /dev/vdb u s p
Model: Virtio Block Device (virtblk)
Disk /dev/vdb: 2621440s
Sector size (logical/physical): 4096B/4096B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 256s 262399s 262144s primary raid

[root@rhel-grub2-1 ~]# grub2-probe --device /dev/md0 --target fs_uuid
grub2-probe: error: disk ?mduuid/537bfbf40b89fb58f50f14c3ba5f2bf3? not found.

[root@rhel-grub2-1 ~]# grub2-install /dev/vdb
Installing for powerpc-ieee1275 platform.
grub2-install: error: disk ?mduuid/537bfbf40b89fb58f50f14c3ba5f2bf3? not found.

Now, interesting thing is that I was not able to migrate /boot to raid 1 using metadata 1.0 when /boot is not the first partition after prep (just like the installer did on comment #15). When I tried the same as the installer did, grub was not able to find /boot partition after root partition.