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Re: [linux-lvm] EMC Storage + LVM + XFS



That is my initial assumption, but I only want to make sure that vgscan
_will_ in fact work they way it seems it should and that the private
region of all volumes or groups will be able to be read and recovered.

-- 
Austin Gonyou
Systems Architect, CCNA
Coremetrics, Inc.
Phone: 512-796-9023
email: austin coremetrics com

On Fri, 25 May 2001, Ragnar Kjørstad wrote:

> On Fri, May 25, 2001 at 05:09:08PM +0200, Stephan Austermuehle wrote:
> > On Fri, May 25, 2001 at 09:47:34AM -0500, Austin Gonyou wrote:
> > > I don't think I'm clear on your statement. As far as I know, which is a
> > > lot about EMC, you can definitely plug disks online. Having Linux see
> > > them? Not necessarily so, but I believe the polling interval for the Fibre
> > > driver will take care of that.
> >
> > Oh, of course the Symmetrix allows hot plugging of disks and online
> > mapping of hypers to one or more channels via a Bin upgrade or the
> > SDR. But at the moment I do not know any way to make Linux recognise
> > the additional disks without reloading (rebooting) the driver. But
> > even if there's a way to online detect new disks -- if a vgscan is
> > necessary to tell the Linux LVM about where its VGs have gone it isn't
> > a very smart solution because it often requires application down time.
>
> I believe if you write things to /proc/scsi/scsi to make linux detect
> new devices, they will be added _after_ the existing ones. The order
> will not be messed up until next reboot, and then vgscan will take care
> of it. Someone please correct me if I'm wrong :)
>
>
>



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