LogFS question

[Jim M. <Jim...@wd...>]

Hi

I'm interested in seeing how garbage collection works on block devices.  I've mounted logfs on a block device (HDD) and made a 40GB partition.  I wrote ~20GB of files in the partition, and then re-wrote to 20GB.

DF shows me that the entire device is consumed.  I'm trying to find a way to trigger GC and get some of the used capacity back.

[root@localhost logfs]# df /mnt/logfs
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda1             40316280  37216368   1051912  98% /
[root@localhost logfs]# ls -l
total 17629004
-rw-r--r--. 1 root root 6543004600 Nov 11 06:58 qemp1
-rw-r--r--. 1 root root 6543004600 Nov 11 06:43 qemp2
-rw-r--r--. 1 root root 1635751150 Nov 11 08:14 remp1
-rw-r--r--. 1 root root 1635751150 Nov 11 08:15 remp2
-rw-r--r--. 1 root root 1635751150 Nov 11 08:16 remp3
-rw-r--r--. 1 root root   32715023 Nov 10 05:43 semp4
-rw-rw-r--. 1 jim  jim       64149 Nov  9 15:54 temp1
-rw-r--r--. 1 root root    6453196 Nov 10 05:42 temp11
-rw-r--r--. 1 root root    6453196 Nov 10 03:24 temp12
-rw-r--r--. 1 root root    6453196 Nov 10 05:42 temp13
-rw-r--r--. 1 root root    6453196 Nov 10 05:42 temp14
-rw-r--r--. 1 root root      64149 Nov  9 17:46 temp2
-rw-r--r--. 1 root root      64149 Nov  9 17:46 temp3
-rw-r--r--. 1 root root      64149 Nov  9 17:46 temp4

Any recommendations are appreciated.

Jim