In regard to: Re: [Networker] Cloning a set of volumes?, Yaron Zabary said...:

George Sinclair wrote:

Is there a reasonably straightforward way to generate the two separate volume lists such that the order of the volumes listed will minimize the likelihood that one nsrclone process would request a tape being read by the other?

It would require a little scripting, but it could be done.

I don't really see how you can do that by volume, as the volume itself does not provide any information regarding save sets which might span several volumes.

I'm not following you Yaron.  The volume doesn't provide any information
about savesets.  The media database provides the information that
George needs, though.

You could a command similar to below to tell which are those save-sets which do not span over multiple volumes and treat them differently:

# ( mminfo -q volume=000001 -r ssid ; mminfo -q volume=000002 -r ssid ) | sort| uniq -c

Or you could just use the '-v' flag with mminfo, and look at the flags it
adds to the report.  From the mminfo man page, describing the -v flag:


   The  first  flag  indicates which part of the save set is on the
   volume.  When the save is completely contained on the volume, a c is
   displayed.  An h is displayed when the save set spans volumes and
   the head is contained on this volume.  The remaining sections  will
   be  on  other volumes.  An m is displayed when the save set spans
   volumes and a middle section is contained on this volume.  The head
   and tail sections will be on different volumes.  There may be more
   than one middle section.  A t is displayed when the  tail  section
   of a spanning save set is contained on this volume.  Again, the
   other sections will be on other volumes.


George's script is still going to require some logic for how to divide
up the volumes into "buckets" with no overlap, but that problem shouldn't
be too bad.

Tim
--
Tim Mooney                                        Tim.Mooney AT ndsu DOT edu
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Room 242-J6, IACC Building                        (701) 231-8541 (Fax)
North Dakota State University, Fargo, ND 58105-5164

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