Hi,
[chris@f25s ~]$ uname -r
4.8.11-300.fc25.x86_64
[chris@f25s ~]$ rpm -q btrfs-progs
btrfs-progs-4.8.5-1.fc26.x86_64
I'm not finding any pattern to this so far, but it's definitely not
always reliable. Here is today's example.
[chris@f25s ~]$ sudo btrfs fi du -s /mnt/second/jackson.2015/
Total Exclusive Set shared Filename
111.67GiB 111.67GiB 0.00B /mnt/second/jackson.2015/
Super. This is correct. The jackson.2015 subvolume contains only
exclusively used data, there are no snapshots, and there are no
reflinks involved for any files.
[chris@f25s ~]$ sudo btrfs send /mnt/second/jackson.2015/ | sudo
btrfs receive /mnt/int/
Send the subvolume to a different btrfs volume. This is not an
incremental send. After completion however:
[chris@f25s ~]$ sudo btrfs fi du -s /mnt/int/jackson.2015/
Total Exclusive Set shared Filename
111.67GiB 37.20GiB 29.93GiB /mnt/int/jackson.2015/
That makes zero sense. What's going on here?
Chris Murphy
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