Ceph » CephFS

Steps:-

1) Create a pool and a metadata pool and create a new cephfs using the pools.
2) Now create another data pool and attach it to the already created cephfs FS using "ceph fs add_data_pool cephfs cephfs_data1"
3) Mount the FS on a client and start running IO.
4) Run rados df on the pools.

Result: Objects are being sent only on first data pool. There are no objects on the secondary data pool. Logs below

=========================================================
#ceph osd lspools
0 rbd,1 cephfs_data,2 cephfs_metadata,3 cephfs_data1 ==========================================================
#ceph fs ls
name: cephfs, metadata pool: cephfs_metadata, data pools: [cephfs_data cephfs_data1 ] =============================================================================================

1. ceph fs dump
   dumped fsmap epoch 187
   e187
   enable_multiple, ever_enabled_multiple: 0,0
   compat: compat={},rocompat={},incompat={1=base v0.20,2=client writeable ranges,3=default file layouts on dirs,4=dir inode in separate object,5=mds uses versioned encoding,6=dirfrag is stored in omap,8=file layout v2}

Filesystem 'cephfs' (1)
fs_name cephfs
epoch 187
flags 0
created 2016-08-19 16:25:06.653481
modified 2016-08-19 16:25:06.653481
tableserver 0
root 0
session_timeout 60
session_autoclose 300
max_file_size 1099511627776
last_failure 0
last_failure_osd_epoch 110
compat compat={},rocompat={},incompat={1=base v0.20,2=client writeable ranges,3=default file layouts on dirs,4=dir inode in separate object,5=mds uses versioned encoding,6=dirfrag is stored in omap,8=file layout v2}
max_mds 1
in 0
up {0=14580}
failed
damaged
stopped
data_pools 1,3
metadata_pool 2
inline_data disabled
14580: 10.242.42.216:6800/2113986 'rack2-client-3' mds.0.8 up:active seq 304 =======================================================================================================================================================================

1. rados df
   pool name KB objects clones degraded unfound rd rd KB wr wr KB
   cephfs_data 1536000001 1500001 0 0 0 32367 2048 4632499 1569910789
   cephfs_data1 0 0 0 0 0 0 0 0 0
   cephfs_metadata 37768 30 0 0 0 334 5225545 304221 12098790
   rbd 0 0 0 0 0 0 0 0 0
   total used 3088403440 1500031
   total avail 236556147856
   total space 239644551296 ========================================================================================================================================================
2. rados --pool=cephfs_data1 ls
3. rados --pool=cephfs_data ls
   10000043c26.00000000
   1000012098d.00000000
   10000099f97.00000000 ========================================================================================================================================================