Ceph » Linux kernel client

mkcephfs -c /etc/ceph/ceph.conf --mkbtrfs (1mds, 1mon, 2osd (2 phyiscal disks$
start ceph
mount ceph fs
write some files to the mount
ceph osd getcrushmap -o /tmp/crush
crushtool -d /tmp/crush -o /tmp/crush.txt
change data "max_size 10" to "max_size 1" in /tmp/crush.txt
crushtool -c /tmp/crush.txt -o /tmp/crush.new
ceph osd setcrushmap -i /tmp/crush.new (Output:

• read 428 bytes from /tmp/crush.new
• 10.06.16_08:12:57.187556 41223950 monclient(hunting): found mon0
• 10.06.16_08:12:57.188298 mon <- [osd,setcrushmap]
• 10.06.16_08:12:58.303241 mon0 -> 'set crush map' (0)
  )

after starting to write a file to the mount, I see these kernel messages :
http://pastebin.com/maVj9daV

ceph / kclient are yesterdays git unstable / unstable-backport versions.
kernel is debian lenny backport 2.6.32.