====== LVM-levyjen hallinta ======

[[http://dev.riseup.net/grimoire/storage/lvm2/|LVM2 ohje, josta on jotain oikeatakin apua]].

<code>
eduwww2:~# pvcreate /dev/cciss/c0d1p5
  Physical volume "/dev/cciss/c0d1p5" successfully created
eduwww2:~# pvcreate /dev/cciss/c0d1p6
  Physical volume "/dev/cciss/c0d1p6" successfully created
eduwww2:~# pvscan
  PV /dev/cciss/c0d0p5   VG eduwww2   lvm2 [68,09 GB / 0    free]
  PV /dev/cciss/c0d1p5                lvm2 [46,57 GB]
  PV /dev/cciss/c0d1p6                lvm2 [90,13 GB]
  Total: 3 [204,79 GB] / in use: 1 [68,09 GB] / in no VG: 2 [136,70 GB]
eduwww2:~#  vgdisplay
  --- Volume group ---
  VG Name               eduwww2
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  7
  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               68,09 GB
  PE Size               4,00 MB
  Total PE              17431
  Alloc PE / Size       17431 / 68,09 GB
  Free  PE / Size       0 / 0
  VG UUID               cruEkO-NZRV-CxUz-lNIp-dQXP-wlH0-cuCFr7

eduwww2:~# vgextend
  Please enter volume group name and physical volume(s)
  vgextend: Add physical volumes to a volume group

vgextend
        [-A|--autobackup y|n]
        [-d|--debug]
        [-h|--help]
        [-t|--test]
        [-v|--verbose]
        [--version]
        VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...]

eduwww2:~# vgextend eduwww /dev/cciss/c0d1p5
  Volume group "eduwww" not found.
eduwww2:~# vgextend eduwww2 /dev/cciss/c0d1p5
  Volume group "eduwww2" successfully extended
eduwww2:~# vgextend eduwww2 /dev/cciss/c0d1p6
  Volume group "eduwww2" successfully extended
eduwww2:~# vgdisplay
  --- Volume group ---
  VG Name               eduwww2
  System ID
  Format                lvm2
  Metadata Areas        3
  Metadata Sequence No  9
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                6
  Open LV               6
  Max PV                0
  Cur PV                3
  Act PV                3
  VG Size               204,79 GB
  PE Size               4,00 MB
  Total PE              52425
  Alloc PE / Size       17431 / 68,09 GB
  Free  PE / Size       34994 / 136,70 GB
  VG UUID               cruEkO-NZRV-CxUz-lNIp-dQXP-wlH0-cuCFr7

eduwww2:~# lvextend -L +10G /dev/eduwww2/var
  Extending logical volume var to 12,86 GB
  Logical volume var successfully resized
#eduwww2:~# df -h
Tiedostojärjestelmä   Koko  Käyt Vapaa Käy% Liitospiste
/dev/mapper/eduwww2-root
                      268M   90M  164M  36% /
tmpfs                 2,0G     0  2,0G   0% /lib/init/rw
udev                   10M   60K   10M   1% /dev
tmpfs                 2,0G     0  2,0G   0% /dev/shm
/dev/cciss/c0d0p1     236M   14M  210M   7% /boot
/dev/mapper/eduwww2-home
                       52G  181M   49G   1% /home
/dev/mapper/eduwww2-tmp
                      380M   11M  350M   3% /tmp
/dev/mapper/eduwww2-usr
                      4,7G  649M  3,9G  15% /usr
/dev/mapper/eduwww2-var
                      2,9G  405M  2,3G  15% /var
eduwww2:~# lvextend -L +10G /dev/eduwww2/home
  Extending logical volume home to 61,89 GB
  Logical volume home successfully resized
eduwww2:~# df -h
Tiedostojärjestelmä   Koko  Käyt Vapaa Käy% Liitospiste
/dev/mapper/eduwww2-root
                      268M   90M  164M  36% /
tmpfs                 2,0G     0  2,0G   0% /lib/init/rw
udev                   10M   60K   10M   1% /dev
tmpfs                 2,0G     0  2,0G   0% /dev/shm
/dev/cciss/c0d0p1     236M   14M  210M   7% /boot
/dev/mapper/eduwww2-home
                       52G  181M   49G   1% /home
/dev/mapper/eduwww2-tmp
                      380M   11M  350M   3% /tmp
/dev/mapper/eduwww2-usr
                      4,7G  649M  3,9G  15% /usr
/dev/mapper/eduwww2-var
                      2,9G  405M  2,3G  15% /var
eduwww2:~# resize2fs /dev/eduwww2/var
resize2fs 1.40-WIP (14-Nov-2006)
Filesystem at /dev/eduwww2/var is mounted on /var; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 1
Performing an on-line resize of /dev/eduwww2/var to 3372032 (4k) blocks.
The filesystem on /dev/eduwww2/var is now 3372032 blocks long.

eduwww2:~# resize2fs /dev/eduwww2/home
resize2fs 1.40-WIP (14-Nov-2006)
Filesystem at /dev/eduwww2/home is mounted on /home; on-line resizing required
old desc_blocks = 4, new_desc_blocks = 4
Performing an on-line resize of /dev/eduwww2/home to 16224256 (4k) blocks.
The filesystem on /dev/eduwww2/home is now 16224256 blocks long.

eduwww2:~# df -h
Tiedostojärjestelmä   Koko  Käyt Vapaa Käy% Liitospiste
/dev/mapper/eduwww2-root
                      268M   90M  164M  36% /
tmpfs                 2,0G     0  2,0G   0% /lib/init/rw
udev                   10M   60K   10M   1% /dev
tmpfs                 2,0G     0  2,0G   0% /dev/shm
/dev/cciss/c0d0p1     236M   14M  210M   7% /boot
/dev/mapper/eduwww2-home
                       61G  181M   58G   1% /home
/dev/mapper/eduwww2-tmp
                      380M   11M  350M   3% /tmp
/dev/mapper/eduwww2-usr
                      4,7G  649M  3,9G  15% /usr
/dev/mapper/eduwww2-var
                       13G  407M   12G   4% /var
eduwww2:~#
</code>

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