Hello Ceph Users:
Ceph baremetal client attempting to map device volume via kernel RBD Driver,
resulting in unable to map device volume and outputs I/O error.
This is Ceph client only, no MDS,OSD or MON running…see I/O error output below.
Client Host Linux Kernel Version :
[root@root ceph]# uname -a
Linux root 3.10.25-11.el6.centos.alt.x86_64 #1 SMP Fri Dec 27 21:44:15 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
Ceph Version:
[root@root ceph]# ceph -v
ceph version 0.80.1 (a38fe1169b6d2ac98b427334c12d7cf81f809b74)
Check Kernel RBD driver:
[root@root ceph]# locate rbd.ko
/lib/modules/3.10.25-11.el6.centos.alt.x86_64/kernel/drivers/block/rbd.ko
/lib/modules/3.10.25-11.el6.centos.alt.x86_64/kernel/drivers/block/drbd/drbd.ko
Check Client to Ceph-Server Connections:
[root@root ceph]# ceph osd lspools
0 data,1 metadata,2 rbd,3 vsmpool_hp1,4 vsmpool_perf1,5 vsmpool_vperf1,6
openstack_hp1,7 openstack_perf1,8 openstack_vperf1,9 vsmpool_perf2,10
vsmpool_hp2,11 vsmpool_vperf2,12 testopnstack,13 ec_perf_pool,14
ec_perf_pool1,15 ec_perf_pool2,16 ec_hiperf_pool1,17 ec_valperf_pool1,
Created RBD:
[root@root ceph]# rbd create rbd9 --size 104800 --pool vsmpool_hp1 --id admin
Check RBD:
[root@root ceph]# rbd ls vsmpool_hp1
rbd1
rbd2
rbd3
rbd4
rbd5
rbd6
rbd7
rbd8
rbd9
Display RBD INFO:
[root@root ceph]# rbd info vsmpool_hp1/rbd9
rbd image 'rbd9':
size 102 GB in 26200 objects
order 22 (4096 kB objects)
block_name_prefix: rb.0.227915.238e1f29
format: 1
Map RBD:
[root@root ceph]# rbd map vsmpool_hp1/rbd9 --id admin
rbd: add failed: (5) Input/output error
Thank You In advance for sharing any possible solution to this error.
Regards,
-Ben
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