On Thursday 22 January 2004 10:11, Brian Cuttler wrote:
>Stefan,
>Gene,
>Paul,
>
>Unfortunately my amanda run didn't run any more quickly.
>
>>From amanda.conf - I can send more if you want to see more.
>
>org "NOTES_DLT" # your organization name for reports
>mailto "amanda-adm AT newton.wadsworth DOT org" # the mailing list
> for operators at your site
>dumpuser "bin" # the user to run dumps under
I would hope that the backups are being done as an unprivileged user,
bin has quite high rights on most systems. OTOH, the mailto: here is
root.
Thats why most of us have added a user 'amanda' and made amanda a
member of the group disk or bin, whichever works for your distro.
># changed from 8 to 4... can't explain excessive time to backup 4
> partitions -ck inparallel 4 # maximum dumpers that will
> run in parallel # maxdumps, added 21-jan-2004 BRC
>maxdumps 2 # max (concurrent) to be run on any
> individual "client"
>
>disklist
>--------
># Notes server backup
>wcnotes / comp-root
>wcnotes /maildb comp-user
>wcnotes /maildb2 comp-user
>wcnotes /export/home comp-user
Unless you have an exclude list file in comp-root that
specifies ./maildb, ./maildb2 and ./home (on separete lines) you are
doing the whole of the last 3 filesystems twice each, once for / and
once per subdir listing. The last entry will also make you require a
seperate disklist entry for /home that doesn't specify the exclude
file.
Thats of course unless the last 3 are in fact different disks
entirely, in which case you should append a 1, a 2, a 3, or a 4 in
order to define to amanda that they are separate physical disks and
can therefore be done concurrently. One should not attempt to backup
2 different partitions on the same disk concurrently as that will
thrash the seeks, slowing things down a bit, or potentially
overheating the seek drivers and damaging the drive, but that would
be a very extreme result and something I've not seen in at least 5
years.
I have the situation in my /usr dir that there are a couple of the
subdirs that are more than a tapefull, so my /usr is broken down into
a /usr/subdir per disklist entry. The is no entry for / in my
disklist.
There are also good reasons to use a non-compressing dumptype for some
dirs as they will grow rather than compress if they contain mostly
executable binaries. Likewise for dirs that contain already
compressed archives & rpms. Its a waste of gzips time to try and
compress them further. A good argument for a bit of reason in the
directory layouts :)
You can see which ones you are wasting compression efforts (and cpu
horsepower) on by looking at the reported compression achieved, in
the email from amanda, and switching those entrys that only get 5 or
10% to a non-compressing dumptype, there by saveing a lot of useless
wheel-spinning by gzip.
>that is it, just the one client. Suppose I can set maxdumps to 4,
> anyway no sense in having inparallel != maxdumps with only a single
> client.
>
>How sensitive is amanda.conf (disklist or others) to white space ?
>I've notices that its often
It doesn't seem to be at all sensitive to whitespace here. I use tabs
liberally for formatting in mine, but an equal amount of spaces is
also just fine.
>keyword value <tab># comment
>
>Just to be paraniod I changed the space to a tab.
>
>Am I missing some other parameter that controls parallelism ?
The use of spindle numbers in the dle perhaps.
Here are a few entrys from mine to illustrate:
---
coyote /var comp-root-tar 1 local
coyote /usr/bin root-tar 1 local
gene /boot root-tar 2 le0
gene /home comp-root-tar 2 le0
---
where the final local or le0 tells anamda that the disk is local or
out on the network. Also, the /etc/hosts files on both machine
contain the alias<->FQDN of the machines, hence the shortand here is
usable.
>I was thinking of running amstatus from cron very 15 minutes
>to watch it but that still isn't much of a diagnostic, more to
>confirm lack of parallelism.
>
> thanks,
>
> Brian
>
>---
> Brian R Cuttler brian.cuttler AT wadsworth DOT org
> Computer Systems Support (v) 518 486-1697
> Wadsworth Center (f) 518 473-6384
> NYS Department of Health Help Desk 518 473-0773
--
Cheers, Gene
"There are four boxes to be used in defense of liberty: soap,
ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
99.22% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com attornies please note, additions to this message
by Gene Heskett are:
Copyright 2004 by Maurice Eugene Heskett, all rights reserved.
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