Ceph命令学习

1、ceph osd tree

显示osd树

[root@node1 ~]# ceph osd tree
ID CLASS WEIGHT  TYPE NAME      STATUS REWEIGHT PRI-AFF 
-1       0.14639 root default                           
-3       0.04880     host node1                         
 0   hdd 0.04880         osd.0      up  1.00000 1.00000 
-5       0.04880     host node2                         
 1   hdd 0.04880         osd.1      up  1.00000 1.00000 
-7       0.04880     host node3                         
 2   hdd 0.04880         osd.2      up  1.00000 1.00000 

2、增加OSD

[trceph@admin-node my-cluster]$ ceph-deploy osd create --data centos/sdc node1

3、删除OSD

[root@node1 ~]# systemctl stop ceph-osd@3
[root@node1 ~]# ceph osd purge 3 --yes-i-really-mean-it 

4、创建pool

ceph osd pool create mytest 8

创建rbd

rbd create --size 1024 myrbd/bar

显示pool

rados  lspools

rbd相关

rbd create --size 1024 myrbd/bar
rbd ls swimmingpool
rbd info foo
rbd resize --size 2048 foo
#xfs_growfs -d /root/test/ 扩容后可以这个命令生效
rbd rm foo

rbd trash mv foo
rbd trash ls
rbd trash rm

#rbd映射
rbd map test
rbd showmapped