[dm-devel] How to change alias name
--[ UxBoD ]--
uxbod at splatnix.net
Wed Feb 3 14:32:14 UTC 2010
----- "Christophe Varoqui" <christophe.varoqui at opensvc.com> wrote:
> You could also start with changing the aliases in
> /etc/multipath.conf,
> run multipath, and reload multipathd config through the CLI or
> restart
> it altogether (which is not risky if there is no degraded situation).
>
> Works with recent multipath tools versions at least.
>
> regards,
> cvaroqui
> http://www.opensvc.com
>
> On mer., 2010-02-03 at 14:16 +0000, --[ UxBoD ]-- wrote:
> > ----- "--[ UxBoD ]--" <uxbod at splatnix.net> wrote:
> >
> > > Hi,
> > >
> > > we have a situation where we need to rename a server and would
> also
> > > like to change the associate multipath alias. Is this possible
> > > without restarting the whole multipath daemon and killing all our
> > > other mounted partitions ? The server we need to work on is in a
> > > shutdown state so the associated partitions are not active.
> > >
> > Reading through the documentation if I do:
> >
> > dmsetup -v status insguest01
> >
> > I see the following with the Name being the alias.
> >
> > Name: insguest01
> > State: ACTIVE
> > Read Ahead: 1024
> > Tables present: LIVE
> > Open count: 4
> > Event number: 1
> > Major, minor: 253, 4
> > Number of targets: 1
> > UUID: mpath-3600144f0e2824900000049df899b0002
> >
> > I can then perform the same command on each of its partitions. If I
> wanted to rename this guest's devices to insguest02 would I do:
> >
> > dmsetup rename insguest01 insguest02
> >
> > then update /etc/multipath.conf so that the alias name reflects the
> new name at boot time ? and would I need to perform the same operation
> on all the partitions as well ?
> >
Thank you Christophe. We are using device-mapper-multipath-0.4.7-30.el5 under CentOS 5.4 X86_64 so I presume we would be okay ?
--
Thanks - Phil
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