2017-06-15 12:44 GMT+03:00 Vianney Stroebel <vianney@xxxxxxxxxxx>: > On a backup drive for a home computer, disk usage as shown by 'btrfs fi > show' is more than double the snapshots exclusive data as shown by "btrfs > qgroup show" (574 GB vs 265 GB). > > I've done a lot of research online and I couldn't find any answer to this > problem. > > Output of some commands: > > uname -a > Linux viybel-pc 4.10.0-22-generic #24-Ubuntu SMP Mon May 22 17:43:20 UTC > 2017 x86_64 x86_64 x86_64 GNU/Linux > > btrfs --version > btrfs-progs v4.9.1 > > sudo btrfs fi show > Label: 'btrfs-backup' uuid: 35905dc5-1400-4687-8be7-cf87d6ad0980 > Total devices 1 FS bytes used 573.89GiB > devid 1 size 698.64GiB used 697.04GiB path /dev/sdb1 > > btrfs fi df /mnt/btrfs-backup > Data, single: total=670.01GiB, used=564.26GiB > System, DUP: total=8.00MiB, used=112.00KiB > System, single: total=4.00MiB, used=0.00B > Metadata, DUP: total=13.50GiB, used=8.64GiB > Metadata, single: total=8.00MiB, used=0.00B > GlobalReserve, single: total=512.00MiB, used=14.95MiB > > From https://github.com/agronick/btrfs-size (i.e. more readable "btrfs > qgroup show") > > btrfs-size /mnt/btrfs-backup > ================================================================================================================================== > Snapshot / Subvolume ID > Total Exclusive Data > ================================================================================================================================== > 10726 gen 216807 top level 5 path full/2016-06-19_12-32-01 10726 > 208.68GB 208.68GB > 21512 gen 216853 top level 5 path full/2016-12-14_16-21-34 21512 > 166.98GB 40.36GB > 23054 gen 216853 top level 5 path full/2017-03-03_08-47-00 23054 > 154.79GB 7.53GB > 25451 gen 216856 top level 5 path full/2017-04-14_21-54-25 25451 > 123.48GB 3.07GB > 26514 gen 216862 top level 5 path full/2017-05-02_14-58-09 26514 > 123.70GB 5.03GB > 28499 gen 218095 top level 5 path full/2017-06-11_19-29-16 28499 > 154.65GB 169.78MB > 28556 gen 218094 top level 5 path full/2017-06-13_03-15-00 28556 > 154.88GB 403.89MB > ================================================================================================================================== > Exclusive > Total: 265.23GB > > Feel free to ask me any question. > > Vianney btrfs fi du -s /mnt/btrfs-backup -- Have a nice day, Timofey. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
