This is in response to Gene's and Joshua's additional quesitons:
1. I'm only running one Samba server and that's on the amanda host server.
2. Sorry, disklist looks like:
amanda1 //server1/C$ pc-tar 3 ge0
amanda1 //server1/D$ pc-tar 4 ge0
amanda1 //server2/C$ pc-tar 5 ge0
amanda1 //server2/D$ pc-tar 6 ge0
amanda1 //server3/C$ pc-tar 11 ge0
amanda1 //server3/D$ pc-tar 12 ge0
amanda1 //server4/C$ pc-tar 44 ge0
amanda1 //server4/D$ pc-tar 45 ge0
amanda1 //server5/C$ pc-tar 47 ge0
amanda1 //server5/D$ pc-tar 48 ge0
>From amanda.conf
define dumptype pc-tar {
comment "Full dump of this filesystem always"
program "GNUTAR"
maxdumps 8
holdingdisk yes
compress none
index yes
priority high
strategy noinc
dumpcycle 0
}
Also, I have 2 holding disks, 20GB each with chunksize of 1GB.
3. I thought that the general opinion of this listserv was that cygwin was not
a good option and samba was better for backing up M$ servers. Have I got this
backwards?
Bob...
---------- Original Message ----------------------------------
From: Gene Heskett <gene.heskett AT verizon DOT net>
Reply-To: gene.heskett AT verizon DOT net
Date: Tue, 8 Jul 2003 13:28:20 -0400
>On Tuesday 08 July 2003 12:21, Bob Zahn wrote:
>>I'm trying to set up the options in amanda.conf to improve the
>>performance (this equates to shortest time to backup) of these five
>>Windows NT/2K servers:
>>
>>server1 C$ 2.19GB
>>server1 D$ 35.6GB
>>server2 C$ 1.58GB
>>server2 D$ 12.9GB
>>server3 C$ 2.18GB
>>server3 D$ 11.6GB
>>server4 C$ 1.3GB
>>server4 D$ 20.4GB
>>server5 C$ 2.97GB
>>server5 D$ 13.7GB
>>
>>If you run the backup on these servers single threaded it takes
>> about 10 hours to backup. I've changed inparallel to 8 and maxdumps
>> to 8 also. The dumporder is "sssSsssS". In the latest test, the
>> backup completed in 8 hours and 41 minutes. I'm using amanda with
>> gnutar and Samba to do the backup. Does anyone have any ideas on
>> how I may improve the performance of this backup? Thanks. Bob...
>
>You didn't post your disklist Bob. And while you can use samba, if
>you can get cygwin installed on the m$ boxes so you can build and run
>an amanda client on each box, then you have the possibility of doing
>as show below.
>
>One of the things that will speed things up is to make sure that each
>disklist entry that is in fact on a different hard drive has a
>different, unique to that disk, 'spindle number', usually the last
>item on each line of the disklist. This will allow amanda to run in
>parallel, a client for each spindle, speeding things up considerably.
>
>I have no idea how this will play out in a samba environment however
>as after the first dozen runs, I learned to avoid that at all costs.
>This is due to the broken way windows and samba handle the files
>dateing, which results in an incremental being made into a full in
>most cases. Since that is never going to be fixed, its time to walk
>away Jim, the horse is dead.
>
>That, combined with making the clients do the compression so that many
>clients can all be working on the compression of their own stuff at
>the same as the others, and a 10 hour backup can become a 2 hour
>backup, depending of course on the speed of the tape drive itself.
>
>This is dependant on making cygwin run on your M$ boxes I think.
>Somebody correct me please if this in in-accurate due to recent
>progress on the windows front. My windows are all made of glass
>here, a 100% linux house. :)
>
>>Robert Zahn UNIX Systems Administrator
>>Oklahoma City Community College
>>7777 S. May Avenue
>>Oklahoma City, Ok 73159
>>bzahn AT zeus.okccc DOT edu bzahn AT okccc DOT edu
>>--
>
>--
>Cheers, Gene
>AMD K6-III@500mhz 320M
>Athlon1600XP@1400mhz 512M
>99.26% setiathome rank, not too shabby for a WV hillbilly
>Yahoo.com attornies please note, additions to this message
>by Gene Heskett are:
>Copyright 2003 by Maurice Eugene Heskett, all rights reserved.
>
>
--
Robert Zahn UNIX Systems Administrator
Oklahoma City Community College
7777 S. May Avenue
Oklahoma City, Ok 73159
bzahn AT zeus.okccc DOT edu bzahn AT okccc DOT edu
--
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