Naming and devlabel (was Re: [cgl_discussion] [Fwd: [ogfs-dev]EVMS 2.0 with cluster support])

Joe DiMartino joe at
Thu Apr 3 10:49:11 PST 2003

On Thu, 2003-04-03 at 10:29, Peter Badovinatz wrote:
> John Cherry wrote:
> > 
> > Pai,
> > 
> > Thanks for the clarification on naming.  I was not implying that EVMS
> > was going to address the consistent naming in a cluster at the device
> > level.  However, if all "shared" devices are encapsulated in shared
> > containers, then we have consistent volume names in the cluster.
> Does anyone have experience with 'devlabel', apparently done by folks at
> Dell?
> A RH Linux 9 review (
> lists devlabel as being included, to deal with the issue:
> "There has been a longstanding issue in Linux in that in the face of OS
> changes or hardware failures, storage devices can "move" to different
> locations. For example, although IDE devices have their physical path
> hardcoded into their device name, eg /dev/hdc3, SCSI devices are not."
> I ask because I've never heard of it, but it seems to address some of
> our concerns.  I haven't read all of the material, I don't know if it's
> tightly tied to Oracle support (although it does help support Oracle.)

It's actually pretty cool.  They even use it in /etc/fstab so mounts
won't slip with syntax like:

   LABEL=/       /                ext3    defaults        1 1
   LABEL=/boot   /boot            ext3    defaults        1 2

-- Joe DiMartino <joe at>

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