[linux-lvm] LVM Naming Convention
James Hawtin
oolon at ankh.org
Wed Apr 20 09:01:49 UTC 2011
Assarsson, Emil wrote:
> We have also started to use hostnames in the VG names for the same reason. Starting with vg makes is easier to auto complete when using bash :-P. I don't see any reason why to use "lv" to the LV's but it doesn't hurt. I also try to use UUID's in the /etc/fstab as much as possible.
>
> Best regards
> Emil Assarsson
>
I also use the hostname in the volume group name for all the reasons
already suggest, its particularly valuable when dealing with san disk,
as any mistake is very obvious.
personally I use
/dev/<hostname>_<type><number>_vg/<filesystem>_lv
Where type is l for local disk s for san. I keep my raid 1 and raid 5 in
different volume groups to avoid mistakes, however both are called l or s.
Where the disk is for use to virtual machines I used
/dev/<hostname>_<type><number>_vg/<virtual machine>_v<number>_lv
I put _vg at the end of all volume groups mostly for completeness, and
avoidance of any change of a name clash, I also thing _lv is useful as
alots of devices can be mixed up in /dev/mapper so giving them a
seperate namespace so the don't get mixed up with multipathed disk, (and
in the old days raw devices) etc. I can do a ls /dev/mapper/*_lv to see
all my logical volumes all in one go, independant of group.
James
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