Hi, I have a subvolume with only one file (file.txt) with 5Mb size. under /btrfs/subvol1/ 1) I have created 1st snapshot /btrfs/snap1_subvol1. Then I ran "btrfs send" and given -f out1.img
size of out1.img is 5Mb. 2) Next, I have appended 1Mb data to file.txt And again created snapshot /btrfs/snap2_subvol2. And rand "btrfs send" out put to file out2.img 3) After that I ran "btrfs send -p /btrfs/snap1_subvol1 /btrfs/snap2_subvol1 -f outwith_poption.img. Beween out1.img and out2.img there is difference of 1Mb I would like to know what is the difference between out2.img and outwith_poption.img ? When I do btrfs send to a file, is there a way to send only changes to new file i.e. for step 2 and step 1, out2.img is 6Mb and out1.img is 5Mb. can I get difference if the file and use it as input to btrfs receive option if I want to recover incremental recover i.e out1.img + 1Mb ?? Here with my steps I can give only out2.img which is of 6Mb or out1.img which is of 5Mb. So for incremetal backup, it consumes total of 11Mb. I want a way to reduce it to total of 6Mb but there should a way to recover from fist snapshot dump and second snapshot dump as well. Thank you in advance. -- 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
