From mboxrd@z Thu Jan  1 00:00:00 1970
From: Martin Wilderoth <martin.wilderoth@linserv.se>
Subject: Disk allocation
Date: Sun, 20 Mar 2011 07:43:29 +0100 (CET)
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I have a small ceph cluster with 4 osd ( 2 disks on 2 hosts). 

I have been adding and removing files from the file system, mounted as ceph on an other host.
 
Now I have removed most of the data on the file system, so I only have 300 MB left plus two snapshots. 

The problem is that looking at the disks the are allocating 88G of data 
on the ceph filesystem. 

osd1 1.1 G 
osd2 1.2 G 
osd3 33 G 
osd4 53 G 

Any reson for this ?