I just started a restore that read multiple savesets at the same time.
I recall noticing parallel recovers after we upgraded from 6.0.2 to
7.1.2. At 6.0.2, I'm pretty sure they were serial.
Dave
On Thu, Jun 09, 2005 at 12:11:09PM -0600, Craig Ruefenacht wrote:
> Hi,
>
> I may not be remembering correctly, but I think I remember being able to
> perform a restore from multiple savesets at once.
>
> For example, if I had a host which had 6 filesystems (each a saveset),
> say, /u01 - /u06. When they are backed up, the savesets are multiplexed
> to a tape drive. In my case, upto 4 savesets from an individual host
> can be multiplexed at once.
>
> When recovering files from those 6 savesets using the recover command-
> line interface:
>
> recover
> recover: Current working directory is /
> recover> add /u01
> ...
> recover> add /u02
> ...
> recover> add /u03
> ...
> recover> add /u04
> ...
> recover> add /u05
> ...
> recover> add /u06
> ...
> recover> recover
>
>
> It used to be that Networker would recover files from multiple savesets
> at once (for instance, it would recover files from /u01, /u02, /u03,
> and /u04 at the same time). Currently, however, Networker recovers them
> serially - it will recover files from one saveset (say, /u01), and, when
> it completes that, it will start recovering files from the second
> saveset (say /u02), and so on.
>
> I am not doing a saveset recover - I am browsing the savesets and
> selecing a subset of files from each saveset (filesystem). Each
> filesystem was backed up at the same time and muxed together, 4 at a
> time, to tape.
>
> This is when recovering data from a full backup. Our Networker server
> is currently v7.1.3 on HPUX 11i, and clients that I've seen this
> behavior on are all Networker v7.1.3 on Linux Redhat and Solaris 5.8.
>
> We recently upgraded Networker from v6.1.3 to v7.1.3, and its about that
> timeframe that I noticed the change in how Networker recovers files from
> multiple savesets. Its my suspicion that the upgrade is what caused the
> change in behavior.
>
> Its added a lot of time to our recovery time, since in order to do a
> recover now, it has to demux /u01 from tape, then when done, demux /u02
> from tape, and so on, even when /u01 and /u02 were muxed together during
> backup.
>
> Is there any way to get Networker 7.1.3 to recover like I remember
> Networker 6.1.3?
>
> I hope that what I'm asking makes sense. It could be that I am
> remembering wrong and Networker has always recovered savesets serially,
> but I don't think so, because I used to recover ~150 Gbyte from 6
> savesets (full backups) and it took ~3 hours. Now its taking about 5x
> longer because it does one at a time, even if two or more of the
> savesets to be recovered are muxed together on tape.
>
>
> --
> Craig Ruefenacht
> UNIX Systems Administrator
> USANA Health Sciences
> http://www.usana.com
>
> --
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> should be sent to stan AT temple DOT edu
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--
Note: To sign off this list, send a "signoff networker" command via email
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