[Digikam-users] what do you use for backups?

[bernhard]

there is quite cool feature in rsync that allows you to sync your backup
in a directory on you backup medium. Lets say you want to backup
/pictures on your pc in directory /week01 on your usb disk. standard
procedure is to do the next rsync against /week01 too which replace
changed files. 

another option is to tell rsync to do the backup of /pictures to lets
say /week02 but use /week01 as base. in that case rsync compares your
files in /pictures against your files in /week01. If a file is not
changed it created an hard link in /week02 pointing to the same file in
/week01. if a file is deleted it will not show up in /week02 (but still
in /week01). if a file has changed it is copied to /week02 while you can
access the old version in /week01. So you can have several versions of
your /pictures directory but you need only disk size from /pictures on
your pc plus the space for files that change on every extra backup you
do. for that you usb drive need to have a linux filesystem like ext4 to
support hardlinks. 

regards, bernhard 

Am 2016-06-07 8:35, schrieb Luca Ferrari: 

> Thank you all for your replies.
> First of all I have to say that cloud is not an option for me because
> (i) I don't want anyone else have my files and (ii) I don't have an
> home internet access with a decent speed to allow me to
> upload/download continuously.
> I don't encrypt my photos, mainly because I want my wife to be able to
> see them without having to scream each time (I encrypt all the other
> important stuff).
> I also often do an intermediate stage at the home computer, so I have
> another "manual" backup at least of the last period.
> 
> The problem I'm facing is to ensure that (i) the backup is ok and (ii)
> the backup is in sync.
> A few months ago one album on my master disk was corrupted. This did
> not affected the backup, beacuse such album was "stable" and no more
> backupped, but restoring from the backup revealed some duplicated
> files due to a massive renaming of images.
> While I can use the delete option of rsync (and similar), how can I
> trust that the "to-be-deleted" image is really renamed and readable?
> 
> So far I'm also thinking about managing my albums via some hash-based
> repository (fossil, git), just to catch up the rename process.
> 
> Luca
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