Re: howto extendlvm
- From: madunix <madunix@xxxxxxxxx>
- Date: Wed, 19 May 2010 21:27:31 +0300
i have done the following and it w0rks
[root@localhost ~]# fdisk -l
Disk /dev/sda: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 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 3916 31350847+ 8e Linux LVM
Disk /dev/sdb: 10.7 GB, 10737418240 bytes
64 heads, 32 sectors/track, 10240 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 10240 10485744 8e Linux LVM
Disk /dev/sdc: 10.7 GB, 10737418240 bytes
64 heads, 32 sectors/track, 10240 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sdc doesn't contain a valid partition table
[root@localhost ~]# fdisk /dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or
OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
The number of cylinders for this disk is set to 10240.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-10240, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-10240, default 10240):
Using default value 10240
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
[root@localhost ~]# vgextend VolGroup00 /dev/sdc1
Volume group "VolGroup00" successfully extended
VolGroup00-LogVol00 VolGroup00-LogVol01
[root@localhost ~]# lvextend -L +9.9G /dev/mapper/VolGroup00-LogVol00
Rounding up size to full physical extent 9.91 GB
Extending logical volume LogVol00 to 45.78 GB
Logical volume LogVol00 successfully resized
[root@localhost ~]# resize2fs /dev/mapper/VolGroup00-LogVol0
VolGroup00-LogVol00 VolGroup00-LogVol01
[root@localhost ~]# resize2fs /dev/mapper/VolGroup00-LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/VolGroup00-LogVol00 is mounted on /; on-line
resizing required
Performing an on-line resize of /dev/mapper/VolGroup00-LogVol00 to
12001280 (4k) blocks.
The filesystem on /dev/mapper/VolGroup00-LogVol00 is now 12001280 blocks long.
[root@localhost ~]# df -kh
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
45G 2.2G 40G 6% /
/dev/sda1 99M 13M 81M 14% /boot
tmpfs 1006M 0 1006M 0% /dev/shm
[root@localhost ~]#
On Wed, May 19, 2010 at 9:04 PM, bastian v.s <bastianvs@xxxxxxxxx> wrote:
example
lvdisplay
umount /dev/mapper/VolGroup00-LogVol00
lvextend -L <mention size> /dev/VolGroup00-LogVol00
resize2fs -f /dev/VolGroup00-LogVol00
init 6
mount -a
On Wed, May 19, 2010 at 1:31 PM, madunix <madunix@xxxxxxxxx> wrote:
I want to extend an existing lvm ( volume group "VolGroup00" using
metadata type lvm2)
[root@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@linux2 ~]# vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
[root@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@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@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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With Regard`s
Bastian V.S
Redhat Certified Engineer
Mob :+919846363663
bastianvs@xxxxxxxxx
linuxcrazyworld.blogspot.com
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