how to leave a VG not activated at boot time?

[Gary Yu]

Hi all,

Is it possible to have a non-root VG not activated at boot time? then use vgchange -a y afterwards when needed?

thanks,
Gary

[Stuart Abramson_2]

Gary:

Yes.

1. I think that if you leave it out of /etc/fstab, it will not be activated. (But I'm not sure.)

2. You can use /etc/lvmrc to say:

a. Don't activate VGs on boot.
b. Activate these only on boot.

But this means that you will have to specify every OTHER VG that you want to activate:


cd /etc
cp lvmrc lvmrc.old
vi lvmrc
set
AUTO_VG_ACTIVATE=0
set VGs to activate in "custom_vg_activation()"
/sbin/vgchange -a y vg01 # activate vg01
# vg00 is always activated on boot


It's a lot of work and prone to problems in the future.

Why don't you DEactivate the VG in question after boot is completed? that might be easier.

[Marco Santerre]

Yes you can do that. In /etc/lvmrc, you can go in the function custom_vg_activation and place any VG you want to activate. Don't forget to change AUTO_VG_ACTIVATE to 0

[S.K. Chan · Accepted solution]

You have to do some customization in /etc/lvmrc. If you got ..
AUTO_VG_ACTIVATE=1
.. it will activate all volume group and you can't change that. If you want to customize your own vg activation change the above to 0 and then in the same file (/etc/lvmrc).. in the "custom_vg_activation" function put these ..
custom_vg_activation()
{
/sbin/vgchange -a y -s /dev/vg00
parallel_vg_sync "/dev/vg00"
}
That way ONLY vg00 is activated at boot time.