7
rated 0 times
[
7]
[
0]
/ answers: 1 / hits: 3215
/ 2 Years ago, tue, july 19, 2022, 6:55:09
I have Ubuntu 12.10 (no updates, kernel 3.5.0-17-generic) on first HDD (sda), which uses MBR and was partitioned as "Use whole disk for ubuntu" with LVM2 enabled. Root filesystem is on LVM2 (VG:ubuntu). Today I added second HDD (sdb) with same size, partitioned it like first hdd, created lvm2 PV and converted root LV to raid1:
pvcreate /dev/sdb5
vgextend ubuntu /dev/sdb5
lvconvert --type raid1 -m1 /dev/ubuntu/root /dev/sdb5
After 100% resync I rebooted and initramfs was unable to find root fs:
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
... (kernel messages)
Gave up waiting for root device. Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait long enough?)
- Check root= (did the system wait for the right device?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/mapper/ubuntu-root does not exist.
Dropping to a shell!
There is list of modules:
(initramfs) cat /proc/modules
hid_generic
usbhid
hid
e1000
raid10
raid456
async_pq
async_xor
xor
async_memcpy
async_raid6_recov
raid6_pq
async_tx
raid1
raid0
multipath
linear
(initramfs) cat /proc/cmdline
BOOT_IMAGE=/vmlinux-3.5.0-17-generic root=/dev/mapper/ubuntu-root ro
(initramfs) ls /dev/mapper
control ubuntu-swap_1
There is output from lvm utility:
lvm> pvscan
PV /dev/sda5 VG ubuntu lvm2 [ 13.76 GiB / 408.00 MiB free]
PV /dev/sdb5 VG ubuntu lvm2 [ 13.76 GiB / 508.00 MiB free]
lvm> vgscan
Reading all physical volumes. This may take a while...
Found volume group "ubuntu" using metadata type lvm2
lvm> lvscan
inactive '/dev/ubuntu/root' [13.26 GiB] inherit
ACTIVE '/dev/ubuntu/swap_1' [100.00 MiB] inherit
lvm> lvdisplay ubuntu
--- Logical volume ---
LV Path /dev/ubuntu/root
LV Name root
VG Name ubuntu
LV UUID xxxxxxxxxxxxxxx
LV Write Access read/write
LV Creation host, time ubuntu, 2013-05-07
LV Status NOT available <<<<< !!!!
LV Size 13.26 GB
Current LE 3394
Mirrored volumes 2
Segments 1
Allocation inherit
Read ahead sectors auto
And lvchange -ay ubuntu fails:
lvm> lvchange -ay ubuntu
/sbin/modprobe failed: 1
Can't process LV root: raid1 target support missing from kernel?
What is missing from initrd?
More From » boot
