So after recovering a box which had a controller failure we needed to mount the old fs to recover some stuff.
when trying to mount /dev/sdc2 we got:
mount: unknown filesystem type ‘LVM2_member’
fix is easy :
modprobe dm-mod
vgchange -ay
lvscan now yields:
ACTIVE '/dev/VolGroup/lv_root' [50.00 GiB] inherit ACTIVE '/dev/VolGroup/lv_home' [178.46 GiB] inherit ACTIVE '/dev/VolGroup/lv_swap' [3.94 GiB] inherit
mount /dev/VolGroup/lv_root /mnt/tempdisk/
et viola` !!
nJoy 😉
Suppose the Disk is /dev/sdb, the second scsi disk,
fdisk /dev/sdb
create as many partitions as you need using command n
Label them with command t as 8e for making it Linux LVM
Write and Exit with the command w.
Format the partitions you require using mkfs command
mkfs -t ext3 -c /dev/sdb1
LVM commands
pvcreate /dev/sdb1
vgextend VolGroup00 /dev/sdb1
lvextend -L 15G /dev/VolGroup00/LogVol01 ;for extending LogVol to 15GB
lvextend -L+1G /dev/VolGroup00/LogVol01 ;for adding one more GB to Logical Volume LogVol01
lvextend -l +100%FREE /dev/VolGroup00/LogVol01
Next you shall need to resize the filesystem.
resize2fs -l /dev/VolGroup00/LogVol01
Thats it finished Njoy 🙂 !
