Ceph » CephFS

create "cephfs&&leadorfs2" fs when run "create fs flag set enable_multiple"

ceph fs new cephfs cephfs_metadata cephfs_data
ceph fs new leadorfs2 cephfs_metadata2 cephfs_data2

1. use "ceph mds dump"

[root@cephfs102 3336422]# ceph mds dump
dumped fsmap epoch 131
fs_name cephfs
epoch   130
flags   0
created 2016-07-13 12:15:17.968014
modified        2016-07-13 12:15:17.968014
tableserver     0
root    0
session_timeout 60
session_autoclose       300
max_file_size   1099511627776
last_failure    0
last_failure_osd_epoch  1238
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=767974}
failed
damaged
stopped
data_pools      1
metadata_pool   2
inline_data     disabled
767974: 100.100.100.103:6800/15523 'cephfs103' mds.0.127 up:active seq 853

2. use "ceph fs dump"

[root@cephfs102 3336422]# ceph fs dump
dumped fsmap epoch 131
e131
enable_multiple, ever_enabled_multiple: 1,0
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   130
flags   0
created 2016-07-13 12:15:17.968014
modified        2016-07-13 12:15:17.968014
tableserver     0
root    0
session_timeout 60
session_autoclose       300
max_file_size   1099511627776
last_failure    0
last_failure_osd_epoch  1238
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=767974}
failed
damaged
stopped
data_pools      1
metadata_pool   2
inline_data     disabled
767974: 100.100.100.103:6800/15523 'cephfs103' mds.0.127 up:active seq 853

Filesystem 'leadorfs2' (2)
fs_name leadorfs2
epoch   113
flags   0
created 2016-07-14 19:51:06.262471
modified        2016-07-14 19:51:06.262471
tableserver     0
root    0
session_timeout 60
session_autoclose       300
max_file_size   1099511627776
last_failure    0
last_failure_osd_epoch  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}
max_mds 1
in      0
up      {0=384086}
failed
damaged
stopped
data_pools      3
metadata_pool   4
inline_data     disabled
384086: 100.100.100.104:6823/24651 'cephfs104' mds.0.112 up:active seq 3024

Standby daemons:

644648: 100.100.100.102:6811/3487948 'cephfs102' mds.-1.0 up:standby seq 1

mds'dump does not display the following 2 items
(1) Standby daemons
(2) fs_name is "leadorfs2"