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List:       amanda-users
Subject:    RE: Multiple tars in parallel?
From:       "Lee, Raymond" <Raymond.Lee () qwest ! com>
Date:       2007-03-30 0:11:01
Message-ID: 6EC7953652E1704A8CF85C0C0CC8040701AB3CDD () itomae2km09 ! AD ! QINTRA ! COM
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> -----Original Message-----
> From: Roy Heimbach [mailto:royh@hpc.unm.edu]
> Sent: Thu 3/29/2007 5:48 PM
> To: Lee, Raymond
> Cc: amanda-users@amanda.org
> Subject: Re: Multiple tars in parallel?
> 
> The "maxdumps" parameter in amanda.conf sets a global upper bound
> on the number of dumps that can run concurrently on any given client.
> From the amanda.conf man page:
> 
> maxdumps int
> Default:  1.  The maximum number of backups from a single
> host that AMANDA will attempt to run in parallel. See also
> the inparallel option.

Ah, thanks.  When I first read this, I thought "maximum number of backups" meant the \
number of instances of amdump running to backup all the disks on a client.  But I \
guess that doesn't make much sense :)  It makes sense now.  I'll give it a shot.

Thanks,
Ray

> 
> Note that this parameter may also be set in a specific dumptype
> (see  below).  This  value  sets  the  default for all dumptypes
> so must appear in amanda.conf before any dumptypes are defined.
> 
> HTH,
> Roy
> -- 
> Roy Heimbach <royh@hpc.unm.edu> / 505-277-8348
> User Services / Center for High Performance Computing
> University of New Mexico
> 
> On Thu, 29 Mar 2007, Lee, Raymond wrote:
> > Hi,
> > 
> > I've just started using Amanda 2.5.1p3 on Solaris with GNU tar as my
> > choice of program.  Is it possible for the Amanda client to run multiple
> > tars in parallel to speed up the backup?  The client that I'm currently
> > testing with has 11 filesystems that need to backed up.  So in my
> > disklist file, I have something like this:
> > 
> > host.abc.com / {
> > 	user-tar-span
> > 	estimate calcsize
> > }
> > 
> > host.abc.com /export/home {
> > 	user-tar-span
> > 	estimate calcsize
> > }
> > 
> > host.abc.com /opt {
> > 	user-tar-span
> > 	estimate calcsize
> > }
> > .
> > .
> > .
> > host.abc.com /filesystem11 {
> > 	user-tar-span
> > 	estimate calcsize
> > }
> > 
> > 
> > When I run amdump on the Amanda server, the client tars up one
> > filesystem at a time.  I looked through many of the docs and man pages,
> > but I didn't see any parameter to specify parallel tars on the client.
> > Is it possible to do that?
> > 
> > Thanks,
> Ray
> > 
> > 
> > This communication is the property of Qwest and may contain confidential or
> > privileged information. Unauthorized use of this communication is strictly
> > prohibited and may be unlawful.  If you have received this communication
> > in error, please immediately notify the sender by reply e-mail and destroy
> > all copies of the communication and any attachments.
> > 
> > 


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