LVM
From DWIKI
Logical Volume Management on Linux
- HOWTO
- Beginner's guide to LVM
- Resizing LVM + DRBD
- http://wiki.tldp.org/LVM-on-RAID
- LVM nesting
- http://blog.gadi.cc/better-lvm-for-kvm/
NOTE: remember to add snapshot support when calling lvcreate
Related commands
lvdisplay
lsblk
partprobe
lvchange
vgchange
dmsetup
vgs
lvcreate
lvresize
lvresize -L+2F /dev/vg/foo
FAQ
Access logical volumes within logical volume
partprobe /dev/mapper/vg-mydata lsblk
This will show the (sub) partitions/volumes, then edit /etc/lvm/lvm.conf
filter = [ "a|.*/|", "a|mydata|","r|.*|" ]
Then run:
vgscan lvscan vgs
Now you should see the names of the volumes you're looking for, so now:
vgchange -a y guestsname_mydata-home
and then you should be able to
mount /dev/mapper/guestsname_mydata-home
When done, remember to change back the filter in lvm.conf, default is
filter = [ "a|.*/|" ]
and of course then once again
vgscan lvscan
lvremove: Logical volume vg-kvm/vps-snapshot is used by another device.
???
some say lvchange -an the snapshot first, but that disables the lv it's connected to as well
