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xnd
Tux's lil' helper
Joined: 26 Sep 2004
Posts: 132
Location: Sherbrooke, Quebec, Canada
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 Posted: Tue Nov 23, 2004 3:14 pm Post subject: Backup of / |
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Hey girls,
I am wondering which command is the best to take a backup of a whole partition, exactly as it is. I mean, i would like to backup my /, because i have some maintenance to do on it, and don't wanna loose any data, and if it's the case, would like to recover it exactly as it was before.
I can use the 'tar' command and 'dd' right? With the 'tar', what options should I use to compress/decompress in order to keep file permission?
I thought about
| Code: | | tar -cvzef / /stuff/rootFolder.tar.gz (/stuff is an other partition) |
And to extract | Code: | | tar -zxpvf /stuff/rootFolder.tar.gz / |
Does that make sense? And what about 'dd'?
Tkx!
XND
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jeremy whiting
Apprentice
Joined: 25 May 2004
Posts: 159
Location: UT
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| Posted: Tue Nov 23, 2004 3:25 pm Post subject: |
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that'd probably work, but it'll take a long time since / has so much stuff, and the file wont be very small either. I've never seen the 'e' flag on tar either, what does it do?
If I were you I'd use these flags
| Code: | | tar -cjlvf / /path/to/some/file.bz2 |
that way you've got better compression 'j' means use bz2 compression
and you've got it to stay on this partition 'l' (that is a lowercase L) makes it stay on this partition. Otherwise it would back up everything even things mounted on /, so basically everything.
you might also want to --exclude=/dev,/boot or something similar if you know there are directories you don't need to back up as well. |
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vonhelmet
l33t
Joined: 06 Apr 2004
Posts: 770
Location: Somewhere in a school
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| Posted: Tue Nov 23, 2004 3:26 pm Post subject: Re: Backup of / |
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| xnd wrote: | Hey girls,
I am wondering which command is the best to take a backup of a whole partition, exactly as it is. I mean, i would like to backup my /, because i have some maintenance to do on it, and don't wanna loose any data, and if it's the case, would like to recover it exactly as it was before.
I can use the 'tar' command and 'dd' right? With the 'tar', what options should I use to compress/decompress in order to keep file permission?
I thought about
| Code: | | tar -cvzef / /stuff/rootFolder.tar.gz (/stuff is an other partition) |
And to extract | Code: | | tar -zxpvf /stuff/rootFolder.tar.gz / |
Does that make sense? And what about 'dd'?
Tkx!
XND |
Your tar command will backup stuff as well, if it is mounted at the time of the tarring. You could tell tar to exclude other directories i.e. ones where other partitions get mounted.
dd might be a better command for a single partition. You might be better with using dd and piping the output from it into a tar command of some kind.
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xnd
Tux's lil' helper
Joined: 26 Sep 2004
Posts: 132
Location: Sherbrooke, Quebec, Canada
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| Posted: Tue Nov 23, 2004 3:45 pm Post subject: |
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yeah, quick answer, love it! Tkx!
I discovered this website that could help with the backups:
http://www.partimage.org/
Tkx everybudy 
XND
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They say if you play a Microsoft CD backwards, you hear satanic messages. That's nothing, 'coz if you play it forwards, it installs Windows..! |
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jstelly
n00b
Joined: 28 Dec 2003
Posts: 70
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| Posted: Tue Nov 23, 2004 3:49 pm Post subject: |
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This is my perl script to back up my boot and root partitions. /mnt/backup is a network share:
| Code: |
#!/usr/bin/perl
print "backing up $ENV{HOSTNAME}\n";
$base_backup_dir="/mnt/backup";
print "deleting contents of /var/tmp/portage:...";
`rm -rf /var/tmp/portage/*`;
print "done.\n";
print "deleting contents of /usr/portage/distfiles:...";
`rm -rf /usr/portage/distfiles/*`;
print "done.\n";
print "deleting contents of /opt/crosstool/src/build:...";
`rm -rf /opt/crosstool/src/build/*`;
print "done.\n";
print "backing up / filesystem...";
`tar -cjlf $base_backup_dir/$ENV{HOSTNAME}.tar.bz2 /`;
print "done.\n";
print "backing up /boot filesystem...";
`tar -cjlf $base_backup_dir/$ENV{HOSTNAME}.boot.tar.bz2 /boot`;
print "done.\n";
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xnd
Tux's lil' helper
Joined: 26 Sep 2004
Posts: 132
Location: Sherbrooke, Quebec, Canada
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| Posted: Tue Nov 23, 2004 4:00 pm Post subject: |
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oh, interesting
Tkx!
XND
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