rbd

rbd

map

将image映射到本机的dev目录下
1、map
rbd map kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911 --pool tenx-pool
2、unmap
rbd unmap /dev/rbd0

mount

将块设备挂载到某个目录下（应该与Linux中mount差别不大）

1、mount
mount -o ro -t ext4 /dev/rbd0 /usr/app/zhangmingli/pvc-name

2、umount
umount /usr/app/zhangmingli/pvc-name

lock

lock和map和mount无关，是防止其他人同时要使用该image的一个操作

1、lock list
rbd lock list kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911 --pool tenx-pool
2、lock add
rbd lock add kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911 123 --pool tenx-pool
3、lock remove
rbd lock remove kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911 123 client.9252844 --pool tenx-pool

info

rbd info kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911 --pool tenx-pool

rbd image 'kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911':
    size 512 MB in 128 objects
    order 22 (4096 kB objects)
    block_name_prefix: rbd_data.8c19a8643c9869
    format: 2
    features: layering
    flags:

du

rbd du kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911 --pool tenx-pool

NAME                                                        PROVISIONED   USED
kubernetes-dynamic-pvc-0109fa77-b661-11e8-b718-005056851911        512M 49152k