Hi I'm now sucessfully backing up my ubuntu machine using btrfs send and btrfs receive. Essentially I do
mount /dev/sda3 /mnt cd /mnt btrfs subvolume snapshot @ backups/@-backupNew btrfs send -p backups/@-backupOld backups/@-backupNew | pv | btrfs receive /media/miguel/huge/backups/@ This is working great and most sends take less then a minute. I did a diff of the original with the send snapshot and except for sockets and other "weird" files like in /dev all the other files seem to be exactly the same. Now I was testing retrieving a snapshot back from the backup disk to the original partition: If I do btrfs subvolume delete @-backupOld and then do btrfs send -p /media/miguel/huge/backups/@/@-backupNew /media/miguel/huge/backups/@/@-backupOld | pv | btrfs receive/mnt/backups I get an error: ERROR: could not find parent subvolume Sending via files instead of pipes I can see the error is in btrfs receive, the btrfs send completes without errors. Is it what I'm trying to do not possible ? I'm I using the wrong syntax ? It would be really handy to be able to do this, to make it easy to go to an old snapshot without having to transfer it in it's full size, instead transferring just the diff. Also, how is the -c (clone) option used and does it do ? It's not clear to me what is it's function, and I haven't seen any example using it on the web. thanks, -- Miguel Negrão http://www.friendlyvirus.org/miguelnegrao ps: I've set up a Haskell script to do the backups, in case it interests anyone it's here: https://gist.github.com/miguel-negrao/5895613 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
