Hello,
For hardware based snapshot devices, is there a way to find out whether the
exposed LUN is a snapshot or an actual volume, by querying the driver below?
I need to know this from my own volume filter. Also can the LUNS come up
randomly with the snapshot device coming up before the actual one? Or is the
order maintained with the real device always coming up first?
Thanks
B
When you write ‘snapshot’ are you referring to VSS managed shadow copies?
On Wed, Jun 2, 2010 at 3:49 AM, Bedanto wrote:
> Hello,
>
> For hardware based snapshot devices, is there a way to find out whether the
> exposed LUN is a snapshot or an actual volume, by querying the driver below?
> I need to know this from my own volume filter. Also can the LUNS come up
> randomly with the snapshot device coming up before the actual one? Or is the
> order maintained with the real device always coming up first?
>
> Thanks
>
> B
> — NTDEV is sponsored by OSR For our schedule of WDF, WDM, debugging and
> other seminars visit: http://www.osr.com/seminars To unsubscribe, visit the
> List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
–
Robert Randall | xxxxx@gmail.com
Dear Rob,
Yes, I am right now interested in VSS complient Hardware snapshots, though
independent of volsnap provider.
thanks
B
On Wed, Jun 2, 2010 at 7:38 PM, Robert Randall
wrote:
> When you write ‘snapshot’ are you referring to VSS managed shadow copies?
>
> On Wed, Jun 2, 2010 at 3:49 AM, Bedanto wrote:
> > Hello,
> >
> > For hardware based snapshot devices, is there a way to find out whether
> the
> > exposed LUN is a snapshot or an actual volume, by querying the driver
> below?
> > I need to know this from my own volume filter. Also can the LUNS come up
> > randomly with the snapshot device coming up before the actual one? Or is
> the
> > order maintained with the real device always coming up first?
> >
> > Thanks
> >
> > B
> > — NTDEV is sponsored by OSR For our schedule of WDF, WDM, debugging and
> > other seminars visit: http://www.osr.com/seminars To unsubscribe, visit
> the
> > List Server section of OSR Online at
> > http://www.osronline.com/page.cfm?name=ListServer
>
>
>
> –
> Robert Randall | xxxxx@gmail.com
>
> —
> NTDEV is sponsored by OSR
>
> For our schedule of WDF, WDM, debugging and other seminars visit:
> http://www.osr.com/seminars
>
> To unsubscribe, visit the List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
>
If you have the VSS hardware provider installed for the disk array then I
recommend you consider using the VSS API to find out what you need to know
and to adjust the mounting (if needed) of the shadow copies. I believe the
VSS API is documented on MSDN. It is an old fashioned user space COM API.
-Robert.
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Bedanto
Sent: Thursday, June 03, 2010 12:48 AM
To: Windows System Software Devs Interest List
Subject: Re: [ntdev] Detecting Hardware based Snap shots
Dear Rob,
Yes, I am right now interested in VSS complient Hardware snapshots, though
independent of volsnap provider.
thanks
B
On Wed, Jun 2, 2010 at 7:38 PM, Robert Randall
wrote:
When you write ‘snapshot’ are you referring to VSS managed shadow copies?
On Wed, Jun 2, 2010 at 3:49 AM, Bedanto wrote:
> Hello,
>
> For hardware based snapshot devices, is there a way to find out whether
the
> exposed LUN is a snapshot or an actual volume, by querying the driver
below?
> I need to know this from my own volume filter. Also can the LUNS come up
> randomly with the snapshot device coming up before the actual one? Or is
the
> order maintained with the real device always coming up first?
>
> Thanks
>
> B
> — NTDEV is sponsored by OSR For our schedule of WDF, WDM, debugging and
> other seminars visit: http://www.osr.com/seminars To unsubscribe, visit
the
> List Server section of OSR Online at
> http://www.osronline.com/page.cfm?name=ListServer
–
Robert Randall | xxxxx@gmail.com
—
NTDEV is sponsored by OSR
For our schedule of WDF, WDM, debugging and other seminars visit:
http://www.osr.com/seminars
To unsubscribe, visit the List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer
— NTDEV is sponsored by OSR For our schedule of WDF, WDM, debugging and
other seminars visit: http://www.osr.com/seminars To unsubscribe, visit the
List Server section of OSR Online at
http://www.osronline.com/page.cfm?name=ListServer