Date: Thu, 8 Oct 1998 19:35:42 +0200 (CEST) From: Paul Dekkers <psd@cgu.nl> To: FreeBSD Mailinglist <freebsd-questions@FreeBSD.ORG> Subject: Backups... Message-ID: <Pine.BSF.3.96.981008193517.1450F-100000@chippie.cgu>
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Hi No answers on this issue? Paul -- Paul Dekkers E-Mail: <P.Dekkers@cgu.nl> To err is human, to moo bovine ---------- Forwarded message ---------- Date: Wed, 7 Oct 1998 20:43:02 +0200 (CEST) From: Paul Dekkers <psd@cgu.nl> To: FreeBSD Mailinglist <freebsd-questions@FreeBSD.ORG> Subject: Backups... Hi I want to make some backups of my systems but I don't know what's the best method to make them. I tried as well tar as dump, but I still have some questions: When I tried dump using a loopback-device (mounted under /mnt/loop0) I backed the whole 'partition' up with: dump 0uf /mnt/loop.dmp /mnt/loop0 That works... I get a file of 30k with all files in it, and I can recover all data with restore if /mnt/loop.dmp or restore rf /mnt/loop.dmp (but I don't know why the 'r' option, however if I leave it I can't recover incrementals (when doing it with the 'if') and with just 'f' I get an segmentation fault so I think its okay that way :-)) Next, when I try to make an incremental backup it doesn't work the way I want it... I first modify some files, create some new and even directories, and then I do: dump 1uf /mnt/loop.dmp1 /mnt/loop0 The file is just 10k and has exactly the same files as in the first dump (so newer files are NOT in it) but just the filetable, no file data... (it's also smaller!) Now, after doing the same backup again after an remount of the /mnt/loop0, the 'dump 1uf ...' works, and the loop.dmp1 is 50k! But it's absolutely not incremental: it contains every file, and all contents of all files... Another strange fact is that when I make a tarball of the /mnt/loop0 tree it's just 20k of size, and when compressing 600bytes instead of 2k of dump file... I really don't understand why... And of course I need to make safe backups :-) (Planning to make them on a disk on another server using ssh or something...) Can anybody explain me what I'm doing wrong, of tell me how I have to make backups? (Using dump or tar or another program...) BTW: Is it possible to create 1 disk where I have to startup with when the system crashed, and then put the backup on the system (so that I don't have to install the whole FreeBSD first :-)) Paul -- Paul Dekkers E-Mail: <P.Dekkers@cgu.nl> To err is human, to moo bovine To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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