Public bug reported:
Binary package hint: grub2
Since installing the latest updates on my Lucid system, I am no longer
able to run update-grub:
# update-grub
Generating grub.cfg ...
/usr/sbin/grub-probe: error: no mapping exists for `hd-root'.
# blkid
/dev/sda1: UUID="c454d1dd-9ca5-8365-9092-ed487f040f97" TYPE="linux_raid_member"
/dev/sdb1: UUID="c454d1dd-9ca5-8365-9092-ed487f040f97" TYPE="linux_raid_member"
/dev/md0: UUID="wDRQND-WIPn-tD04-fnpp-MYl1-SBxZ-JYzeEe" TYPE="LVM2_member"
/dev/mapper/hd-root: UUID="e321d240-c1a7-421d-aa48-6e9815045792" TYPE="ext4"
/dev/mapper/hd-swap: UUID="779718d6-cee0-481f-8335-e7020747c0fb" TYPE="swap"
# pvdisplay
--- Physical volume ---
PV Name /dev/md0
VG Name hd
PV Size 931.32 GiB / not usable 3.88 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 238417
Free PE 32062
Allocated PE 206355
PV UUID wDRQND-WIPn-tD04-fnpp-MYl1-SBxZ-JYzeEe
# vgdisplay
--- Volume group ---
VG Name hd
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 57
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 5
Open LV 5
Max PV 0
Cur PV 1
Act PV 1
VG Size 931.32 GiB
PE Size 4.00 MiB
Total PE 238417
Alloc PE / Size 206355 / 806.07 GiB
Free PE / Size 32062 / 125.24 GiB
VG UUID bifJxB-gavG-4NBR-2VEw-nRpY-dz5N-fiWmsA
# lvdisplay
--- Logical volume ---
LV Name /dev/hd/root
VG Name hd
LV UUID dUHaqU-hpuW-ejX5-qYD5-SkPO-Q03v-T92xNU
LV Write Access read/write
LV Status available
# open 1
LV Size 18.62 GiB
Current LE 4768
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 512
Block device 251:0
--- Logical volume ---
LV Name /dev/hd/swap
VG Name hd
LV UUID TNS841-NF3w-9U3z-N0W1-YlpR-7VbX-VWEuCv
LV Write Access read/write
LV Status available
# open 1
LV Size 7.45 GiB
Current LE 1907
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 512
Block device 251:1
# mount
/dev/mapper/hd-root on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime)
configfs on /sys/kernel/config type configfs (rw)
Installation went fine and the disk configuration has not changed since then.
This bug is fairly serious because it stops me from installing/booting
new kernels.
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
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update-grub fails when using LVM on top of mdraid
https://bugs.launchpad.net/bugs/643148
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