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Gabriele.vivinetto: New page: La macchina client si collega via rsync ad un server che esegue rsyncd, e viene backuppata usando degli hard link per risparmiare spazio. Vengono conservati gli ultimi 7 backup ==Server==...
2009-07-25T22:27:21Z
<p>New page: La macchina client si collega via rsync ad un server che esegue rsyncd, e viene backuppata usando degli hard link per risparmiare spazio. Vengono conservati gli ultimi 7 backup ==Server==...</p>
<p><b>New page</b></p><div>La macchina client si collega via rsync ad un server che esegue rsyncd, e viene backuppata usando degli hard link per risparmiare spazio.<br />
Vengono conservati gli ultimi 7 backup<br />
<br />
==Server==<br />
<br />
*Configurare rsyncd:<br />
<br />
sudoedit /etc/rsyncd.conf<br />
<br />
<pre><br />
# cat /ffp/etc/rsyncd.conf <br />
log file = /mnt/HD_b2/backup/rsyncd.log<br />
# percorso assoluto<br />
<br />
use chroot = true<br />
# per sicurezza<br />
<br />
[sda1]<br />
# Modulo per il primo disco<br />
uid = 0<br />
gid = 0<br />
# i files vengono trasferiti usando le credenziali di root<br />
path = /mnt/HD_b2/backup/sda1<br />
comment = Backup Juno sda1<br />
read only = false<br />
numeric ids = yes<br />
# usa gli id numerici per le permission, per evitare problemi di restore<br />
#fake super = yes<br />
# serve solo se rsyncd non è usato come root<br />
pre-xfer exec = /mnt/HD_b2/backup/pretransfer > /mnt/HD_b2/backup/pretransfer.log<br />
# script da eseguire prima dell'inizio del trasferimento<br />
post-xfer exec = /mnt/HD_b2/backup/posttransfer > /mnt/HD_b2/backup/posttransfer.log<br />
# script da eseguire dopo la fine del trasferimento<br />
<br />
[sda4]<br />
uid = 0<br />
gid = 0<br />
path = /mnt/HD_b2/backup/sda4<br />
comment = Backup Juno sda4<br />
read only = false<br />
numeric ids = yes<br />
#fake super = yes<br />
pre-xfer exec = /mnt/HD_b2/backup/pretransfer > /mnt/HD_b2/backup/pretransfer.log<br />
post-xfer exec = /mnt/HD_b2/backup/posttransfer > /mnt/HD_b2/backup/posttransfer.log<br />
</pre><br />
<br />
Questi sono gli script pre e post:<br />
<br />
sudoedit /mnt/HD_b2/backup/pretransfer<br />
<br />
#nulla<br />
<br />
sudoedit /mnt/HD_b2/backup/posttransfer<br />
<br />
<pre><br />
# cat /mnt/HD_b2/backup/posttransfer<br />
#!/bin/bash<br />
# SHOWS all RSYNC variables<br />
set | grep RSYNC_<br />
<br />
#RSYNC_EXIT_STATUS=12<br />
#RSYNC_HOST_ADDR=192.168.250.88<br />
#RSYNC_HOST_NAME=juno.diesis.priv<br />
#RSYNC_MODULE_NAME=sda1<br />
#RSYNC_MODULE_PATH=/mnt/HD_b2/backup/sda1<br />
#RSYNC_PID=7924<br />
#RSYNC_RAW_STATUS=3072<br />
#RSYNC_USER_NAME=<br />
<br />
dstpath=$RSYNC_MODULE_PATH<br />
<br />
if [ "RSYNC_EXIT_STATUS" = "0" ]<br />
then<br />
echo Linking $dstpath ...<br />
LAST_LINE=$(/bin/ls $dstpath -1 | grep '2[0-9][0-9][0-9][0-1][0-9][0-3][0-9]*' | sort | tail -n1)<br />
echo LAST_LINE=$LAST_LINE<br />
echo cd $dstpath<br />
echo rm -f current<br />
echo ln -s $LAST_LINE current<br />
<br />
echo Cleaning $dstpath ...<br />
TOTAL_LINES=$(/bin/ls $dstpath -1 | grep '2[0-9][0-9][0-9][0-1][0-9][0-3][0-9]*' | sort | wc -l)<br />
LINES_2DELETE=$(($TOTAL_LINES-7))<br />
DELETE=$(/bin/ls $dstpath -1 | grep '2[0-9][0-9][0-9][0-1][0-9][0-3][0-9]*' | sort | head -n $LINES_2DELETE)<br />
echo TOTAL_LINES=$TOTAL_LINES<br />
echo LINES_2DELETE=$LINES_2DELETE<br />
echo DELETE=$DELETE<br />
if [ -z "$DELETE" ]<br />
then<br />
for DIR in $DELETE<br />
do<br />
echo Deleting $dstpath/$DIR ...<br />
echo rm -rf $dstpath/$DIR<br />
done<br />
else<br />
echo Nothing to clean.<br />
fi<br />
else<br />
echo Last sync was unsuccesfull: not linking and not deleting.<br />
fi<br />
</pre><br />
<br />
==Client==<br />
<br />
Creare lo script:<br />
sudoedit /home/diesis/local/bin/timemachine-sda1<br />
<br />
<pre><br />
#!bin/bash<br />
if [ $(id -u) != "0" ]<br />
then <br />
echo You must run <br />
echo sudo $(basename $0)<br />
exit 1<br />
fi<br />
<br />
cd /<br />
<br />
srcpath=.<br />
dstpath=quantum::sda1<br />
date=`date "+%Y%m%d_%H%M%S"`<br />
<br />
rsync \<br />
-aivxP \<br />
--link-dest=../current \<br />
$srcpath \<br />
$dstpath/$date 2>&1<br />
</pre><br />
<br />
Notare che il --link-dest è relativo al percorso effettivo di backup<br />
<br />
Ora si lancia il backup:<br />
sudo /home/diesis/local/bin/timemachine-sda1<br />
<br />
<br />
==Riferimenti==<br />
* [http://markmail.org/message/plwfvbrdlwzrwp3u#query:link-dest%20daemon+page:1+mid:e7dgmmpg7qw6xd37+state:results --link-dest and file/dir transfer to remote rsync daemon - Alexander Grahn - org.samba.lists.rsync - MarkMail]<br />
*[http://www.webos-internals.org/wiki/Backing_Up_via_Rsync Backing Up via Rsync - WebOS Internals]</div>
Gabriele.vivinetto