How to backup hard disk timely?

rsync -a --link-dest=/media/backup/$HOSTNAME/$PREVDATE '--exclude=/[ps][ry][os]' --exclude=/media/backup/$HOSTNAME / /media/backup/$HOSTNAME/$DATE/

Creates files in $DATE and hardlinks existing files to $PREVDATE. Thus full backup in each directory. Only drawback is changed modification time. Recommend a wrapper script to determine $DATE and $PREVDATE. Works like a charm. (Dirvish handrolled)

By: danam

2010-01-30 08:36:41

rsync

1 Alternatives + Submit Alt

How to backup hard disk timely?

'data' is the directory to backup, 'backup' is directory to store snapshots. Backup files on a regular basis using hard links. Very efficient, quick. Backup data is directly available. Same as explained here : http://blog.interlinked.org/tutorials/rsync_time_machine.html in one line. Using du to check the size of your backups, the first backup counts for all the space, and other backups only files that have changed. Show Sample Output
This is sample output - yours may be different.
```
/backup# du -hs .
1.5G	.
/backup# du -hs *
1.4G	201008042142
15M	201008042150
24M	201008050022
/backup# du -hs 201008042142; du -hs 201008050022
1.4G	201008042142
1.4G	201008050022
```
2

rsync -av --link-dest=$(ls -1d /backup/*/ | tail -1) /data/ /backup/$(date +%Y%m%d%H%M)/

dooblem · 2010-08-05 19:36:24 7

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