O'Reilly logo

Learning Ceph - Second Edition by Karan Singh, Vaibhav Bhembre, Anthony D'Atri

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

CephFS

To check the status of Ceph's MDS, run ceph mds stat or ceph mds dump.

# ceph mds stat
e85: 1/1/1 up {0=ceph-mds001=up:active}
    
# ceph mds dump
dumped mdsmap epoch 85
epoch    85
flags    0
created 2017-10-20 11:11:11.1138
modified 2017-10-22 13:13:13.1701
tableserver     0
root     0
session_timeout 60
session_autoclose        300
max_file_size   1099511627776
last_failure    0
last_failure_osd_epoch   666
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}
max_mds   1
in        0
up        {0=1138}
failed
stopped
data_pools       0
metadta_pool     1
inline_data      disabled
1138: 196.168.1.1:6800/2046 'ceph-mds001' mds.0 13 up; active seq 4252 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required