howto extendlvm
madunix
madunix at gmail.com
Wed May 19 08:01:52 UTC 2010
I want to extend an existing lvm ( volume group "VolGroup00" using
metadata type lvm2)
[root at linux2 ~]# df -kh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
58G 12G 44G 21% /
/dev/sda1 99M 27M 68M 29% /boot
tmpfs 7.9G 0 7.9G 0% /dev/shm
[root at linux2 ~]# vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
[root at linux2 ~]# lvmdiskscan
/dev/ram0 [ 16.00 MB]
/dev/root [ 58.84 GB]
/dev/ram [ 16.00 MB]
/dev/sda1 [ 101.94 MB]
/dev/VolGroup00/LogVol01 [ 8.78 GB]
/dev/ram2 [ 16.00 MB]
/dev/sda2 [ 67.65 GB] LVM physical volume
/dev/ram3 [ 16.00 MB]
/dev/ram4 [ 16.00 MB]
/dev/ram5 [ 16.00 MB]
/dev/ram6 [ 16.00 MB]
/dev/ram7 [ 16.00 MB]
/dev/ram8 [ 16.00 MB]
/dev/ram9 [ 16.00 MB]
/dev/ram10 [ 16.00 MB]
/dev/ram11 [ 16.00 MB]
/dev/ram12 [ 16.00 MB]
/dev/ram13 [ 16.00 MB]
/dev/ram14 [ 16.00 MB]
/dev/ram15 [ 16.00 MB]
2 disks
17 partitions
0 LVM physical volume whole disks
1 LVM physical volume
[root at linux2 ~]# fdisk -l
Disk /dev/sda: 72.7 GB, 72746008576 bytes
255 heads, 63 sectors/track, 8844 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 8844 70935007+ 8e Linux LVM
[root at linux2 ~]#
Can you point out the safe way to do it?
Am thinking to do the following steps on my RHEL5.1
vgs
pvcreate /dev/lun2
vgextend vg01 /dev/lun2
lvextend -L +1G /dev/vg01/lv01
resize2fs /mount/point/of/lv01
Thanks
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