[ceph-users] mount failed since failed to load ceph kernel module

xiang.dai at sky-data.cn xiang.dai at sky-data.cn
Mon Nov 13 18:13:47 PST 2017


I got a confused issue in docker as below: 

After install ceph successfully, i want to mount cephfs but failed: 

[root at dbffa72704e4 ~]$ /bin/mount /cephfs -t ceph -o name=admin,secretfile=/etc/ceph/admin.secret -v 
failed to load ceph kernel module (1) 
parsing options: rw,name=admin,secretfile=/etc/ceph/admin.secret 
mount error 5 = Input/output error 

But ceph related kernel modules have existed: 

[root at dbffa72704e4 ~]$ lsmod | grep ceph 
ceph 327687 0 
libceph 287066 1 ceph 
dns_resolver 13140 2 nfsv4,libceph 
libcrc32c 12644 3 xfs,libceph,dm_persistent_data 

Check the ceph state(i only set data disk for osd): 

[root at dbffa72704e4 ~]$ ceph -s 
id: 20f51975-303e-446f-903f-04e1feaff7d0 
health: HEALTH_WARN 
Reduced data availability: 128 pgs inactive 
Degraded data redundancy: 128 pgs unclean 

mon: 2 daemons, quorum dbffa72704e4,5807d12f920e 
mgr: dbffa72704e4(active), standbys: 5807d12f920e 
mds: cephfs-1/1/1 up {0=5807d12f920e=up:creating}, 1 up:standby 
osd: 0 osds: 0 up, 0 in 

pools: 2 pools, 128 pgs 
objects: 0 objects, 0 bytes 
usage: 0 kB used, 0 kB / 0 kB avail 
pgs: 100.000% pgs unknown 
128 unknown 

[root at dbffa72704e4 ~]$ ceph version 
ceph version 12.2.1 (3e7492b9ada8bdc9a5cd0feafd42fbca27f9c38e) luminous (stable) 

My container is based on centos:centos7.2.1511, kernel is 3e0728877e22 3.10.0-514.el7.x86_64. 

I saw some ceph related images on docker hub so that i think above 
operation is ok, did i miss something important? 

Best Regards 
Dai Xiang 
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