From: Greg Freemyer (freemyer@NorcrossGroup.com)
Date: Thu May 02 2002 - 12:12:35 EDT
The excellent Dr. Thomas.Blinn comes thru again:
The AdvFS freeze and thaw functionality will be present in the
next release (V5.1B, due out this autumn in the US). It does
not require that you are running a cluster, but it does require
the AdvFS Advanced Utilities license. There is also an enhanced
on-line defragmenter and some other neat stuff included with the
Advanced AdvFS license. Since this is new stuff that isn't in a
current release, most people will have no idea what you're asking
about; I've seen some of the presentations about the features,
and I'll have access to the field test documentation, but I've
not learned the real details yet. There is a command line way
to "freeze" an AdvFS domain with automatic thawing after some
time, or you can thaw it deliberately. And you don't need to
use the Enterprise Volume Manager to use the new AdvFS stuff,
although it's all integrated if you do.
Tom
=== Original question
> Managers,
>
> I just saw a marketing presentation about Tru64 / SANs.
>
> One of the slides read:
>
> ====
> 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 know what they are talking about with "AdvFS provides Freeze/Thaw
> ...."
>
> Is it useful in a standalone server, or only with a cluster where you are
> running the CFS.
>
> Are there command line tools available to invoke this behavior?
>
> If not, a C-callable API?
>
> Is this only available when you buy EVM V2, or is provided one of the Tru64,
> TruClusters, AdvFS licenses?
>
> PS: I am familiar with quiesing an application prior to making a snapshot, but
> this sounds like something that may be needed in addition to that in a CFS
> environment with direct_io in use.
>
> Thanks
> Greg Freemyer
> Internet Engineer
> Deployment and Integration Specialist
> Compaq ASE - Tru64
> Compaq Master ASE - SAN Architect
> The Norcross Group
> www.NorcrossGroup.com
>
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