[zzq@localhost ceph]$ rbd showmapped
id pool image snap device
0 rbd foo - /dev/rbd0
则使用/dev/rbd0创建文件系统
sudo mkfs.ext4 -m0 /dev/rbd0
正确输出如下:
[zzq@localhost ceph]$ sudo mkfs.ext4 -m0 /dev/rbd0
mke2fs 1.41.12 (17-May-2010)
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=1024 blocks, Stripe width=1024 blocks
262144 inodes, 1048576 blocks
0 blocks (0.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=1073741824
32 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
This filesystem will be automatically checked every 32 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[zzq@localhost ceph]$
挂载文件系统并写入文件查看
sudo mkdir /cephAll
sudo mount /dev/rbd0 /cephAll
cd /cephAll
sudo vi helloCeph.txt
ls
df -h