Ubuntu
grub2 package

  1. Bug #1912043
  2. Comment #0

Comment 0 for bug 1912043

Revision history for this message
Kees Cook (kees) wrote : grub2 fails to install/probe into md device with hot spare

grub2 appears to _sometimes_ ignore md devices with a hot spare:

$ cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]
md5 : active raid1 sda2[2](S) sdb2[3] sde2[4]
      2925939136 blocks super 1.2 [2/2] [UU]
      bitmap: 2/22 pages [8KB], 65536KB chunk

md6 : active raid1 sdf2[0] sdd2[2](S) sdk2[1]
      3902691136 blocks super 1.2 [2/2] [UU]
      bitmap: 1/30 pages [4KB], 65536KB chunk

unused devices: <none>

$ sudo grub-probe -vvv / 2>&1 | grep -E 'info: Inserting md/|error'
grub-probe: info: Inserting md/6 (+0,7805382272) into systemvg (lvm)
grub-probe: error: disk `lvmid/5R9E1M-V0xL-pEsR-74zV-3oOm-JorM-hb2Erw/WHUtMx-lZcd-2RmH-WVSk-Z0Et-qiqS-hFBd4u' not found.

If I remove the hotspare from md5, everything works normally and I can install grub again. But md6 has a spare too... ?!