Resizing physical disk and logical volumes

This is a VM which had the HD resized. Now it's time to resize the LVM partition, actually you don't do that, you will resize the PV.

sles11_php:~ # fdisk -l /dev/sda

Disk /dev/sda: 16.1 GB, 16106127360 bytes
255 heads, 63 sectors/track, 1958 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0005035d

  Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           2           9       64260   83  Linux
/dev/sda2              10          74      522112+  82  Linux swap / Solaris
/dev/sda3              75        1958    15133230   8e  Linux LVM

Here you can see sda3 now with 15Gb

Now it's time to resize the PV

sles11_php:~ # pvdisplay
 --- Physical volume ---
 PV Name               /dev/sda3
 VG Name               VGroot
 PV Size               9.43 GB / not usable 263.50 KB
 Allocatable           yes
 PE Size (KByte)       4096
 Total PE              2414
 Free PE               238
 Allocated PE          2176
 PV UUID               LGgBQf-sw8J-fbnu-1EHL-0z1G-J31k-eAJoXc

sles11_php:~ # pvscan
 PV /dev/sda3   VG VGroot   lvm2 [9.43 GB / 952.00 MB free]
 Total: 1 [9.43 GB] / in use: 1 [9.43 GB] / in no VG: 0 [0   ]

sles11_php:~ # pvresize /dev/sda3
 Physical volume "/dev/sda3" changed
 1 physical volume(s) resized / 0 physical volume(s) not resized

sles11_php:~ # pvdisplay
 --- Physical volume ---
 PV Name               /dev/sda3
 VG Name               VGroot
 PV Size               14.43 GB / not usable 2.36 MB
 Allocatable           yes
 PE Size (KByte)       4096
 Total PE              3694
 Free PE               1518
 Allocated PE          2176
 PV UUID               LGgBQf-sw8J-fbnu-1EHL-0z1G-J31k-eAJoXc

sles11_php:~ #


sles11_php:~ # vgdisplay
 --- Volume group ---
 VG Name               VGroot
 System ID
 Format                lvm2
 Metadata Areas        1
 Metadata Sequence No  8
 VG Access             read/write
 VG Status             resizable
 MAX LV                0
 Cur LV                6
 Open LV               6
 Max PV                0
 Cur PV                1
 Act PV                1
 VG Size               14.43 GB
 PE Size               4.00 MB
 Total PE              3694
 Alloc PE / Size       2176 / 8.50 GB
 Free  PE / Size       1518 / 5.93 GB
 VG UUID               CexmBK-uOq6-fnjo-qxFV-SIWW-04ZM-LENpdq

The VG didn't need any changes.

sles11_php:~ # lvresize -l +50%FREE /dev/VGroot/LVusr
 Extending logical volume LVusr to 5.46 GB
 Logical volume LVusr successfully resized



sles11_php:~ # df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VGroot-LVroot
                    1014M  357M  658M  36% /
udev                  248M  104K  247M   1% /dev
/dev/sda1              61M   16M   42M  28% /boot
/dev/mapper/VGroot-LVhome
                    1014M  4.3M 1010M   1% /home
/dev/mapper/VGroot-LVopt
                    1014M   60M  955M   6% /opt
/dev/mapper/VGroot-LVtmp
                    1014M  5.5M 1009M   1% /tmp
/dev/mapper/VGroot-LVusr
                     2.5G  2.4G  140M  95% /usr
/dev/mapper/VGroot-LVvar
                     2.0G  235M  1.8G  12% /var


sles11_php:~ # xfs_growfs  /usr/
meta-data=/dev/mapper/VGroot-LVusr isize=256    agcount=4, agsize=163840 blks
        =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=655360, imaxpct=25
        =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=2560, version=2
        =                       sectsz=512   sunit=0 blks, lazy-count=0
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 655360 to 1432576



sles11_php:~ # df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VGroot-LVroot
                    1014M  357M  658M  36% /
udev                  248M  104K  247M   1% /dev
/dev/sda1              61M   16M   42M  28% /boot
/dev/mapper/VGroot-LVhome
                    1014M  4.3M 1010M   1% /home
/dev/mapper/VGroot-LVopt
                    1014M   60M  955M   6% /opt
/dev/mapper/VGroot-LVtmp
                    1014M  5.5M 1009M   1% /tmp
/dev/mapper/VGroot-LVusr
                     5.5G  2.4G  3.2G  44% /usr
/dev/mapper/VGroot-LVvar
                     2.0G  235M  1.8G  12% /var

Here is a list of tools you need to extend each partition's type:

http://tldp.org/HOWTO/LVM-HOWTO/extendlv.html


An excellent howto in LVM:
http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/LVM-HOWTO.html


Resizing a ext3 partition with progress bar :)

e2fsck -f -C 0 /dev/xxx

If you forget the -C 0(zero) option you can send a SIGUSR1 signal to the process, like this:

kill -SIGUSR1 e2fsc_PID

Now it's time to actually resize:

resize2fs -p /dev/xxx