[linux-lvm] auto_activation_volume_list in lvm.conf not honored

[Stefan Bauer]

Hi Peter,

now all make sense. On this ubuntu machine upstartd with udev is taking care of vgchange.

After some digging, /lib/udev/rules.d/85-lvm2.rules shows, that vgchange is only executed with -a y

We will test this on weekend but I'm certain now, that this was the problem.

We wanted to keep things simple and do not use clvmd. We have master/slave setup without concurrent write/read.

So according to your documentations ;) it should work without clvmd.

Thank you!

Stefan

 
-----Ursprüngliche Nachricht-----
> Von:Peter Rajnoha <prajnoha at redhat.com>
> Gesendet: Don 24 November 2016 14:39
> An: linux-lvm at redhat.com
> CC: sb at plzk.de
> Betreff: Re: [linux-lvm] auto_activation_volume_list in lvm.conf not honored
> 
> On 11/24/2016 01:21 PM, Stefan Bauer wrote:
> > hi folks, 
> > 
> > howto avoid pvescan to initialize lvm volume groups on startup (it's for a cluster setup)? auto_activation_volume_list was filled with the remaining VGs we want to setup. Manually it does what it should 
> > 
> > /sbin/lvm pvescan --config 'activation { auto_activation_volume_list = "vg2" }'  only activates vg2 but keeps vg1 "untouched".
> > 
> > But on system startup, all VGs are activated. (ubuntu 14.04.5 LTS)
> > 
> > We also updated the ramdisk and verified, the changes are also in the ramdisks lvm.conf
> > 
> > However vg1 is also enabled.
> > 
> > Any help is greatly appreciated.
> 
> It's important that all scripts which handle LVM activation at boot are
> executed with vgchange -aay that honours the auto_activation_volume_list
> (so not "vgchange -ay").
> 
> All init scripts and systemd units which upstream LVM2 provides are
> executed with "-aay" already.
> 
> You mentioned cluster setup - so are your VGs clustered and are you
> using clvmd? If that's the case, the clustered VGs are activated either
> by clvmd init script/systemd unit or external cluster resource agent
> (e.g. pacemaker and clvm ocf file) which calls the vgchange to activate
> the clustered VGs - that one needs to use "-aay" too.
> 
> -- 
> Peter
>