- First log on to rails or sgd-virt for vm's
>ssh admin@rails
- Make sure you have plenty of space
>df -h
- Create the volume
>sudo lvcreate --size 50G --name vm08 vg02
- Then run mkfs to make the vol usable
>mkfs.ext3 /dev/mapper/vg02-vm07
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
786432 inodes, 3145728 blocks
157286 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=3221225472
96 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 34 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
- Now you can display the volumes on the server that you just made
>lvdisplay
--- Logical volume ---
LV Name /dev/vg02/vm07
VG Name vg02
LV UUID V1oPhh-9Mq1-FyP5-00Ks-87A3-fesV-UFuVkJ
LV Write Access read/write
LV Status available
# open 1
LV Size 50.00 GiB
Current LE 9600
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
- to remove a volume use the LV name:
>lvremove /dev/vg02/vm07
Do you really want to remove active logical volume vm03? [y/n]: y
Logical volume "vm07" successfully removed
- make sure you run fsck on the new volume to check for integrity
>fsck /dev/mapper/vg02/vm07
e2fsck 1.41.12 (17-May-2010)
/dev/mapper/vg02-vm07: clean, 11/786432 files, 89841/3145728 blocks
- then mount it on /vm07
>mount /dev/mapper/vg02-vm07 /vm07
- to resize a volume: this is possible to do on a live volume
>lvextend +10g /dev/vg02/vm03
## then you need to run the mkfs.ext3 on it again and the fsck
- To remove a volume no longer needed
>lvremove /dev/vg02-vm04