Hello,

We've recently noticed that one of our file system is runnig out of free space :
df -k
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/drbd1            61925464  54821544   3958292  94% /xxx

Having a look with 'du' shows, that only 35GB are used.
When I mounted that file system on the secondary node, all values are okay:
/dev/drbd1            61925464  34424544  24355292  59% /xxx

What ist he reason for the difference of 20GB? (Activity log or other meta 
data?) And what can I do now to get free space back?

Output of /prod/drbd on primary node (the one with the size problem) :
version: 8.4.1 (api:1/proto:86-100)
GIT-hash: 91b4c048c1a0e06777b5f65d312b38d47abaea80 build by xyz@xxx, 2012-07-06 
07:19:33
 1: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate B r-----
    ns:4448320 nr:0 dw:767861356 dr:952302182 al:132509 bm:7766 lo:0 pe:0 ua:0 
ap:0 ep:1 wo:b oos:0

Output of /proc/drbd on secondary node :
1: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate B r-----
    ns:0 nr:23524 dw:178758696 dr:566276537 al:51 bm:487 lo:0 pe:0 ua:0 ap:0 
ep:1 wo:b oos:0

Kind regards,
Tobias Heinemann

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