usage of data directory in distributed storage nodes (torusd) is not reduced after removing the client data

[nak3]

Version: b6f7aba

Reproduce step

1. check initial data usage under the data directory

  # du -s -h /data/torus/
  3.3G  /data/torus/

2. setup volume and mount volume (nbd)

  # mount /dev/nbd10 -o discard,noatime /torus/

3. use mounted data

  # dd if=/dev/zero of=1.tmp ibs=1M obs=1M count=1024
  # dd if=/dev/zero of=2.tmp ibs=1M obs=1M count=1024
  # dd if=/dev/zero of=3.tmp ibs=1M obs=1M count=1024

4. check directory usage on toursd and compare with 1.

  # du -s -h /data/torus/
  6.3G  /data/torus/

5. remove data

  # rm -f /torus/*.tmp

6. check directory usage on toursd and compare with 4.

  # du -s -h /data/torus/
  6.3G  /data/torus/

Actual result

• The usage between 4. and 6. are same. So, the directory usages are gradually increasing.

  Expected result

• The usage is decreased in 6.

[nak3]

Sorry, I understand this. It is not a bug. Close.