exclude dump

2007-12-25 7:24:00

Hi,

I sent the following:

>Hi again,

>Since I received no replies, I thought I'd try again and see if someone would

>at least acknowledge seeing this.

>> We are running 4.0.3 and have added swap space using a mkfile and swapon.

>> This seems to work fine except that this file is included in our dumps, an

>> additional 25MB's.

>> How can we do dumps and exclude this swap file?

>> Thanks Russ <rbebb@usc.pppl.gov>

>Thanks, Russ <rbebb@usc.pppl.gov>

Apparently, my original post did not go out.

Thanks for the many replies. The summary follows.

1. list the files and directories to be dumped on the command line (or

set up the list in a file, see dump(8))

2. put the swap files in their own separate partition (and set the

backup flat to 0 in /etc/fstab)

don't use mkfile so won't have to use filesystem to access swap

spread to several disks / controllers offers speed advantage

3. use tar -X or tar and compress or GNU tar or bar or cpio -f or Legato

NetWorker 2.0 instead

4. use 4.1 to explicitly exclude files (explicitly include files?)

5. "... do a "dummy" level 0 dump, say to /dev/null, touch the files you

wanted to backup, and run a higher level dump (1 perhaps?).

This wouldn't work with the swap file, as it would be

continuously updated. ..."

6. "... doesn't work for level-0 dumps, but should do the trick for all

your incrementals ..."

"... [before the 'swapon swapfile' is executed]

mount the filesystem that contains the swapfile

reset the date to a date before the last level-0 dump

'touch' the swapfile

set the date back to today

unmount the filesystem

do the dump ..."

7. "... since you should at least umount the filesystems, why not erase

the file altogether ? ..."

8. use an exabyte for backups, then 25MB is trivial

9. make the swap file with -n (dynamic allocation) option

10. write a program (man utimes) to change modification time

Thanks to all who responded, including

holle@ASC.SLB.COM odt@phillies.base.bellcore.com

paul@concour.cs.concordia.ca bchivers@smiley.mitre.org

tyen@mundo.eco.utexas.edu dinah@lgc.com

datri@concave.convex.com macphed@dvinci.usask.ca

feldt@phyast.nhn.uoknor.edu sjh@helicon.math.purdue.edu

trinkle@cs.purdue.edu @VM.ITS.RPI.EDU:VINCE@UCONNVM.BITNET

battan@sequent.com mikem@juliet.ll.mit.edu

picard@ilog.ilog.fr pomeranz@isis.dccs.upenn.edu

kenton@space.mit.edu selig@centaur.msfc.nasa.gov

wuthel!brand@lll-winken.llnl.gov oconnor!miker@oddjob.uchicago.edu

JAMES_M._ZIOBRO.WBST102A@xerox.com Kennedy_J_Lemke@Princeton.EDU

roger@sst.ll.mit.edu upkar@wsu-eng.eng.wayne.edu

fetrow@orac.biostat.washington.edu dusan@cs.uq.oz.au

kjv@tampella.fi urszula@garnet.berkeley.edu

finnell@portia.mitre.org bill@jtsv16.jts.com

polstra!jdp@uunet.UU.NET adobe!adobe.com!weaver@decwrl.dec.com

thakur@zerkalo.harvard.edu harvey@physics.heriot-watt.ac.uk

rick@computer-science.manchester.ac.uk martin@uk.ac.umist.ccl

robert@computing-maths.cardiff.ac.uk brent@crick.ssctr.bcm.tmc.edu

I shall put swap into a separate partition.

Thanks, Russ <rbebb@usc.pppl.gov>

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