Sumary2: LSM Cloning

Izzet Ergas · *nix forums beginner Joined: 02 May 2002 Posts: 3

Wohoo! I received another response to my query from a very authoritative
source. Thanks go to Tim Mark & the good Dr. Blinn.

Tim Mark:

In Tru64 UNIX 5.1B, shipping this fall, the new
volclonedg utility will allow you to import the
volumes as you describe and mount them without
getting the "dsk23: clone rejected" message.

Best regards,

Tim Mark
AdvFS Development

Dr. Thomas Blinn:

I *believe* that LSM now has hooks to support interacting with AdvFS to
better support their interactions. But I'd have to go find the field
test documentation for both, or the design documents, and study them in
detail to be sure. And even if I knew, I couldn't promise you that
what it says on the slide is what will be delivered, because we are
just now getting ready to send the software off to external testing
(at selected customer sites), and someone may uncover a problem that
we can not fix before we have to ship the software later this year.

Tom

Dr. Thomas P. Blinn + UNIX Software Group + Compaq Computer Corporation
110 Spit Brook Road, MS ZKO3-2/W17 Nashua, New Hampshire 03062-2698
Technology Partnership Engineering Phone: (603) 884-0646
Internet: tpb@zk3.dec.com - or - thomas.blinn@compaq.com
ACM Member: tpblinn@acm.org PC@Home: tom@felines.mv.net

Original query:
-------------------------------------------------------------------------

Mgrs,

I saw the same presentation that Greg Freemyer just posted about. I have a
different question about the same slide. Unfortunately the presenter wasn't
able to shed any light on the topic but maybe the list can.

====
Gaining Productivity with SAN Initiated Backup
* Enterprise Volume Manager V2
- Full support for Tru64 UNIX and TruCluster Server V5 for
controller-based snapshot/clone generation
* AdvFS provides Freeze/Thaw to enable consistent clone
or snapshot
* LSM supports cloned volumes
====

Does anyone have more details regarding "LSM supports cloned volumes"?

I would guess that it means you can take a byte-for-byte copy of a disk
(like you'd get by using dd to copy the contents of one drive to another)
and have LSM import the cloned volume and mount the contents. I currently
get an error message when LSM starts up saying "dsk23: clone rejected" or
something very similar.

If anyone is interested, the reason I'm asking is that we're an EMC shop and
have implemented EMC Timefinder & SRDF software which does pretty much the
same thing as EVM. It would make my life so much easier to have this
functionality.

Google