[linux-lvm] Detecting active/inactive volume groups

[linux-lvm] Detecting active/inactive volume groups

[Keegan Quinn]

Hello world,

I am searching for a way to determine which volume groups on a system 
are active; ideally I'd like to be able to list all active volume groups 
and all inactive volume groups separately, from the command line.

With older versions of LVM, I believe this was possible by using the -D 
flag to vgdisplay. Unfortunately, with current versions of LVM - I'm 
running 2.02.66 presently - the -D flag no longer exists, and I cannot 
find equivalent functionality in vgdisplay or in any other command. In 
fact, vgdisplay now appears to always list all VGs, regardless of their 
state, and makes no mention whatsoever of active or inactive state.

Is it possible to determine which VGs are active or inactive, with 
recent versions of LVM? How should I go about doing this?

Thanks,

  - Keegan

-- 
Keegan Quinn  <kquinn@storix.com>
Software Support Engineer
Storix, Inc.
(619) 543-0200

Re: [linux-lvm] Detecting active/inactive volume groups

[Alasdair G Kergon]

The concept of 'active' (or 'available') and 'inactive' in respect of Volume
Groups has been removed.  Under the LVM1 architecture it made sense - VG
metadata was cached in-kernel - but with device-mapper it doesn't - the kernel
doesn't know anything about VGs, only LVs.

Do your detection at the LV level instead.

Alasdair