LVM VG Activation

Patrick Nelson pnelson at neatech.com
Tue Jul 11 18:45:02 UTC 2006


Paul Howarth wrote:
> On Mon, 2006-07-10 at 13:30 -0700, Tom Spec wrote:
>   
>> Two systems using shared disks in a clustered environment.  
>>
>> When both systems are up I can de-activate the VG on one system,
>> activate it on the other and vice-versa.  What I'm not sure about is
>> what happens if the "non-active" system reboots. Will it try to
>> activate those VGs (which are currently in use by the other system?)
>> Is this an issue?
>>     
>
> Dunno; not done clusters. The "vgchange" manpage sounds promising with
> its "l" and "e" options, but rc.sysinit looks worrying with
> --ignorelockingfailure:
>
>         if [ -x /sbin/lvm.static ]; then
>                 if /sbin/lvm.static vgscan --mknodes
> --ignorelockingfailure > /dev/null 2>&1 ; then
>                         action $"Setting up Logical Volume
> Management:" /sbin/lvm.static vgchange -a y --ignorelockingfailure
>                 fi
>         fi
>
> The "vgscan" manpage looks to have something useful though:
>
>   vgscan scans all SCSI, (E)IDE disks, multiple devices and a bunch of
>   other disk devices in the system looking for LVM physical volumes and
>   volume groups. Define a filter in lvm.conf(8) to restrict the scan to
>   avoid a CD ROM, for example.
>
> You could probably filter out your shared disks this way.
>
> Paul.
>
>
>   

You might want to pose this question to the LVM mail list at 
linux-lvm at redhat.com




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