I am trying to reinstall grub on my system. Grub was installed before
but I have had hard drive troubles, so one of the drives does not have
grub on it. I have a lvm on top of a mirror raid.
I run the following command
$sudo grub-install /dev/sda
[sudo] password for mpower:
/usr/sbin/grub-setup: warn: Your embedding area is unusually small.
core.img won't fit in it..
/usr/sbin/grub-setup: error: embedding is not possible, but this is
required when the root device is on a RAID array or LVM volume.
This seems odd since it has grub on it. I really should have tried sdb
first. But none the less if I look at sda it has 62 unused sectors on
the front. From what I have read that is the right amount
$ sudo fdisk -l /dev/sda
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00018e76
Device Boot Start End Blocks Id System
/dev/sda1 63 976768064 488384001 fd Linux raid
autodetect
Any idea what broke?
Some additional info:
$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/md0
VG Name vg
PV Size 465.76 GiB / not usable 888.00 KiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 119234
Free PE 0
Allocated PE 119234
PV UUID wS9qYc-jWkT-FR3Z-bi0H-cY8I-wLS6-2Z1dPl
$ sudo vgdisplay
--- Volume group ---
VG Name vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 465.76 GiB
PE Size 4.00 MiB
Total PE 119234
Alloc PE / Size 119234 / 465.76 GiB
Free PE / Size 0 / 0
VG UUID QwDeNr-aQvO-5uYv-ImDP-C8eJ-uKyi-ZHYWtk
$ sudo lvdisplay
--- Logical volume ---
LV Name /dev/vg/swap_1
VG Name vg
LV UUID hxn1wt-EcJP-8rfO-3lCc-X3OM-gG3f-uuR3WK
LV Write Access read/write
LV Status available
# open 2
LV Size 7.45 GiB
Current LE 1907
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/vg/root
VG Name vg
LV UUID tjmJkA-njlJ-VuDz-mBvY-5hpB-bsMD-ftKMXP
LV Write Access read/write
LV Status available
# open 1
LV Size 458.31 GiB
Current LE 117327
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
$ sudo mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Wed Jan 11 20:30:26 2012
Raid Level : raid1
Array Size : 488383352 (465.76 GiB 500.10 GB)
Used Dev Size : 488383352 (465.76 GiB 500.10 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Fri Sep 6 21:26:31 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : petros:0 (local to host petros)
UUID : dea84e95:1a6753ea:2982d49d:b812ff86
Events : 2204266
Number Major Minor RaidDevice State
2 8 1 0 active sync /dev/sda1
3 8 17 1 active sync /dev/sdb1
$ grub-install -v
grub-install (GRUB) 1.99-12ubuntu5.1
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric
$ uname -a
Linux petros 3.0.0-32-generic #51-Ubuntu SMP Thu Mar 21 15:50:59 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
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