Re: backup best practise?

[Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>]

Heya,

Ulli Horlacher wrote...

> What is the best practise for backup of a local btrfs file system?

send/receive was already mentioned, and despite a higher cost of setting
things up I'd never want to miss the efficiency of incremental syncs.
And of course it allows remote replication as well.

> In my case, I have 2 disks: disk one contains a /home btrfs filesystem,
> disk two contins a /backup btrfs filesystem.
> So far I use:
> rsync -a --delete /home /backup
> 
> The drawback of this methode is: In /home there are also *big* VMs which
> will be copied every time even if they have changed only a few bytes,
> because rsync works file based.

A bit offtopic here, check --inplace, rsync's support for this has
improved a lot over the past years. Still, check the manpage for various
caveats.

    Christoph