Mount LVM-partition in Linux differs from typical mounting of standard file system partition (for example, ext2 and ext3). Let’s have a look at our disk:
fdisk -l /dev/hda
Disk /dev/hda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 13 104391 83 Linux /dev/hda2 14 19457 156183930 8e Linux LVM
Монтирование LVM-разделов в Linux несколько отличается от типичного монтирования разделов стандартных файловых систем (например, ext2 или ext3). Взглянем на наш диск:
fdisk -l /dev/hda
Disk /dev/hda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 13 104391 83 Linux /dev/hda2 14 19457 156183930 8e Linux LVM
If you try to mount LVM in the same way as you do it with other standard Linux partitions, you won’t have a success.
mount /dev/hda2 /tmp/mnt
mount: /dev/hda2 already mounted or /tmp/mnt busy
In order to mount a partition, firstly, define a volume group contained in /dev/hda2:
pvs
PV VG Fmt Attr PSize PFree /dev/hda2 VolGroup01 lvm2 a- 148.94G 32.00M /dev/hdb2 VolGroup00 lvm2 a- 114.94G 96.00M
And enter the contents VolGroup01:
lvdisplay /dev/VolGroup01
--- Logical volume --- LV Name /dev/VolGroup01/LogVol00 VG Name VolGroup01 LV UUID zOQogm-G8I7-a4WC-T7KI-AhWe-Ex3Y-JVzFcR LV Write Access read/write LV Status available # open 0 LV Size 146.97 GB Current LE 4703 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:2 --- Logical volume --- LV Name /dev/VolGroup01/LogVol01 VG Name VolGroup01 LV UUID araUBI-4eer-uh5L-Dvnr-3bI6-4gYg-APgYy2 LV Write Access read/write LV Status available # open 0 LV Size 1.94 GB Current LE 62 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:3
The partition which I want to mount /dev/VolGroup01/LogVol00. Another partition is swap – that is what I don’t need. Now mount LVM-volume group.
mount /dev/VolGroup01/LogVol00 /tmp/mnt
Если попытаться смотнитровать LVM также как мы это делаем с другими стандартными разделами Linux, то у нас ничего не выйдет.
mount /dev/hda2 /tmp/mnt
mount: /dev/hda2 already mounted or /tmp/mnt busy
Для того чтобы смонтировать раздел, сначала определим группу томов содержащихся в /dev/hda2:
pvs
PV VG Fmt Attr PSize PFree /dev/hda2 VolGroup01 lvm2 a- 148.94G 32.00M /dev/hdb2 VolGroup00 lvm2 a- 114.94G 96.00M
Ну и выведем содержимое VolGroup01:
lvdisplay /dev/VolGroup01
--- Logical volume --- LV Name /dev/VolGroup01/LogVol00 VG Name VolGroup01 LV UUID zOQogm-G8I7-a4WC-T7KI-AhWe-Ex3Y-JVzFcR LV Write Access read/write LV Status available # open 0 LV Size 146.97 GB Current LE 4703 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:2 --- Logical volume --- LV Name /dev/VolGroup01/LogVol01 VG Name VolGroup01 LV UUID araUBI-4eer-uh5L-Dvnr-3bI6-4gYg-APgYy2 LV Write Access read/write LV Status available # open 0 LV Size 1.94 GB Current LE 62 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:3
Раздел, который я хочу смонтировать /dev/VolGroup01/LogVol00. Другой раздел это swap – он мне не нужен. Теперь просто смонитруем LVM-том.
mount /dev/VolGroup01/LogVol00 /tmp/mnt
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