[linux-lvm] Could vgscan read a file of "preferred" LV name -> minor device id ?
Heinz J . Mauelshagen
mauelshagen at sistina.com
Tue Jan 15 08:03:02 UTC 2002
On Fri, Jan 11, 2002 at 10:41:16AM +0000, Patrick Caulfield wrote:
> On Fri, Jan 11, 2002 at 07:11:00AM +0000, Piete Brooks wrote:
> > I'm getting complaints from NFS users that when servers reboot, they often
> > find that their mounts have the wrong data. I've never really worked out
> > which end hold what in NFS FHs, but the basic idea is that a client identifies
> > a FH which encodes (major dev id,minor dev id,inode number,version).
> > This appears to break down when a new LV is created ane the server rebooted.
> > As the /dev/<vg>/<lv> nodes are numbered strictly in the order that they are
> > discovered, all LV minor device IDs on subsequent VGs are renumbered, so any
> > remote caching of FHs breaks (( as with SCSI )).
> >
> > Is that about right ?
> >
> > Would it be possible for vgscan to read a "hints" file consisting of <vg>/<lv>
> > and minor device number pairs ?
> >
> > As each <vg>/<lv> is found, if it's in the file, the nominated minor device id
> > is used; if it's not found, then the next minor device id which is not listed
> > in the file is used.
> >
> > [[ I use devfs, so using existing data in /dev/ would not help -- but I think
> > it would do no harm to use that data by default ]]
> >
>
> I thought Heinz had fixed this in 1.0.1, what version are you using (tools &
> kernel)?
That's right. It is in since 1.0.1.
>
> patrick
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
--
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
More information about the linux-lvm
mailing list