[IDEA] Psuedo Mirroring

[mk01]

@IriDium

you want online mirror or offline mirror? cause offline mirror is simply a clone, or cp, or rsync, or what ever - so as we have xbianclone(copy) I would use this to make daily copy (actually if I implement incremental snapshots copy then we will even not push hardware by copying all content daily).
cron record would look like this

Code:

btrfs-auto-snapshot xbiancopy /dev/root /dev/mmcblk0p2

online mirror you can do with sw raid, or with device mapper layer, or easiest with btrfs. but online multidisk solutions have some drawbacks (for user). for example writes. by default system will wait for all devices to finish a block write (so if you add slower device, you will slow down on writes to level of slowest device).