Difference between revisions of "LVM2"
From Knoppix Documentation Wiki
(Updated the content to match 5.0.1) |
(Simplified the example a bit (hopefully)) |
||
| Line 14: | Line 14: | ||
# vgchange -a y | # vgchange -a y | ||
| − | *To mount | + | *To mount a logical volume, first find out what they are called (unless you know already). Use lvs or vgdisplay/lvdisplay for this. |
| − | # | + | # lvs |
| − | --- | + | LV VG Attr LSize Origin Snap% Move Log Copy% |
| − | + | home vg -wi-ao 2.09G | |
| − | + | var vg -wi-ao 1.32G | |
| − | + | ||
| − | + | *In this example, the volume group 'vg' contains two logical volumes, called 'home' and 'var'. To mount the 'home' volume: | |
| − | + | ||
| − | # mount /dev/ | + | # mount /dev/vg/home /mnt/tmp |
# ls /mnt/tmp | # ls /mnt/tmp | ||
| − | lost+found | + | lost+found fuzzy joe mp3 |
| + | |||
| + | *The volumes can be accessed with names '''/dev/<vg>/<lv>''' or '''/dev/mapper/vg-lv'''. For example, the file /dev/vg/home is a symbolic link to /dev/mapper/vg-home, and you can use either name to mount it. | ||
Revision as of 21:17, 24 October 2006
- (If you use an old Knoppix version you may need to install LVM tools first. Version 5.0.1 already has the packages and dm-mod module loaded, and the following first steps are not necessary.)
# modprobe dm-mod # apt-get update # apt-get install lvm-common lvm2 If you needed the above steps, remember that the tools are in /lib/lvm-200 but if you don't want to type the complete path, you may link them into /usr/bin. # lndir /lib/lvm-200/ /usr/sbin/
- To use existing volume groups you have to activate them.
# vgscan # vgchange -a y
- To mount a logical volume, first find out what they are called (unless you know already). Use lvs or vgdisplay/lvdisplay for this.
# lvs LV VG Attr LSize Origin Snap% Move Log Copy% home vg -wi-ao 2.09G var vg -wi-ao 1.32G
- In this example, the volume group 'vg' contains two logical volumes, called 'home' and 'var'. To mount the 'home' volume:
# mount /dev/vg/home /mnt/tmp # ls /mnt/tmp lost+found fuzzy joe mp3
- The volumes can be accessed with names /dev/<vg>/<lv> or /dev/mapper/vg-lv. For example, the file /dev/vg/home is a symbolic link to /dev/mapper/vg-home, and you can use either name to mount it.
