System de sauvegarde sur HDD USB

administrateur_linux · Le 22/04/2006, à 20:29

Bonsoir,

Je cherche une solution de sauvegarde sur HDD usb, j'ai utilisé dar et son fronten Kdar, sa me satifais pas correctement surtous que on va chercher des fichiers manuellement.

J'ai entendu parler de Rsync, mai j'arrive pas a le métrisé au niveaux des otpions.

si vous avez des solution... a vos clavier...:D

Bobbybionic · Le 23/04/2006, à 09:11

Bonjour
J'utilisais ce petit script sans prétention :

#!/bin/bash
echo "1. Lancer la sauvegarde du home"
echo "2. Lancer la sauvegarde du système"
read reponse
case $reponse in
	1)
	rm `find /home/guillaume/ -name "*.*~"`
	rsync -ra --progress --delete /home/guillaume/ /media/fichiers/BACKUP/home/guillaume/
	;;
	2)
	sudo rsync -ra --progress --delete / /media/fichiers/BACKUP/
	;;
esac
echo "Sauvegarde terminée !"
sleep 5

administrateur_linux · Le 23/04/2006, à 22:13

Merci pour le script, peut-tu m'expliquer les otions de Rsync ?

rsync -ra --progress --delete

Bobbybionic · Le 24/04/2006, à 09:21

man rsync a écrit :

-a, --archive
This is equivalent to -rlptgoD. It is a quick way of saying you
want recursion and want to preserve almost everything. The only
exception to this is if --files-from was specified, in which
case -r is not implied.
Note that -a does not preserve hardlinks, because finding multi‐
ply-linked files is expensive. You must separately specify -H.
-r, --recursive
This tells rsync to copy directories recursively. See also
--dirs (-d).
--delete
This tells rsync to delete extraneous files from the receiving
side (ones that aren’t on the sending side), but only for the
directories that are being synchronized. You must have asked
rsync to send the whole directory (e.g. "dir" or "dir/") without
using a wildcard for the directory’s contents (e.g. "dir/*")
since the wildcard is expanded by the shell and rsync thus gets
a request to transfer individual files, not the files’ parent
directory. Files that are excluded from transfer are also
excluded from being deleted unless you use the --delete-excluded
option or mark the rules as only matching on the sending side
(see the include/exclude modifiers in the FILTER RULES section).
This option has no effect unless directory recursion is enabled.
This option can be dangerous if used incorrectly! It is a very
good idea to run first using the --dry-run option (-n) to see
what files would be deleted to make sure important files aren’t
listed.
If the sending side detects any I/O errors, then the deletion of
any files at the destination will be automatically disabled.
This is to prevent temporary filesystem failures (such as NFS
errors) on the sending side causing a massive deletion of files
on the destination. You can override this with the
--ignore-errors option.
The --delete option may be combined with one of the
--delete-WHEN options without conflict, as well as
--delete-excluded. However, if none of the --delete-WHEN
options are specified, rsync will currently choose the
--delete-before algorithm. A future version may change this to
choose the --delete-during algorithm. See also --delete-after.
--progress
This option tells rsync to print information showing the
progress of the transfer. This gives a bored user something to
watch. Implies --verbose if it wasn’t already specified.
When the file is transferring, the data looks like this:
782448 63% 110.64kB/s 0:00:04
This tells you the current file size, the percentage of the
transfer that is complete, the current calculated file-comple‐
tion rate (including both data over the wire and data being
matched locally), and the estimated time remaining in this
transfer.
After a file is complete, the data looks like this:
1238099 100% 146.38kB/s 0:00:08 (5, 57.1% of 396)
This tells you the final file size, that it’s 100% complete, the
final transfer rate for the file, the amount of elapsed time it
took to transfer the file, and the addition of a total-transfer
summary in parentheses. These additional numbers tell you how
many files have been updated, and what percent of the total
number of files has been scanne

En gros : r pour la récursivité (il synchronise aussi les sous répertoires), a je sais plus pourquoi mais ça ne davait pas marcher sans, je n'ai pas pris le temps de bien lire le man, la réponse est peut être évidente, progress pour voir la progression (il affiche ce qu'il copie et mets un pourcentage, pas mal quand on synchronise 40Go, delete pour supprimer les fichiers obsolètes (qui n'apparaissent plus dans la sources, mais sont encore dans la destination).

Ainsi, on obtient la copie conforme de son home ou de sa racine.

cep_ · Le 24/04/2006, à 09:43

Voir : http://www.mikerubel.org/computers/rsync_snapshots/

et : rsync -a source/ destination/

(Note: I usually also add the -v (verbose) flag too so that rsync tells me what it's doing). This command is equivalent to:

cp -a source/. destination/

except that it's much more efficient if there are only a few differences.

De même : http://www.lalitte.com/rsync.html

Ubuntu-fr

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#1 Le 22/04/2006, à 20:29

System de sauvegarde sur HDD USB

#2 Le 23/04/2006, à 09:11

Re : System de sauvegarde sur HDD USB

#3 Le 23/04/2006, à 22:13

Re : System de sauvegarde sur HDD USB

#4 Le 24/04/2006, à 09:21

Re : System de sauvegarde sur HDD USB

#5 Le 24/04/2006, à 09:43

Re : System de sauvegarde sur HDD USB

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