CEPHFS文件系统基本操作

1.查看cephfs文件系统信息

# ceph fs ls
name: cephfs, metadata pool: metadata, data pools: [data ]


# ceph mds stat
e109: 1/1/1 up {0=node202=up:active}, 2 up:standby

# ceph mds dump
dumped fsmap epoch 109
fs_name	cephfs
epoch	109
flags	0
created	2022-01-14 17:15:40.058584
modified	2022-01-14 17:15:40.058584
tableserver	0
root	0
session_timeout	150
session_autoclose	60
max_file_size	8796093022208
last_failure	0
last_failure_osd_epoch	0
compat	compat={},rocompat={},incompat={1=base v0.20,2=client writeable ranges,3=default file layouts on dirs,4=dir inode in separate object,5=mds uses versioned encoding,6=dirfrag is stored in omap,8=file layout v2}
max_mds	1
in	0
up	{0=12500564118}
failed
damaged
stopped
data_pools	1
metadata_pool	2
inline_data	disabled
12500564118:	192.168.8.202:6800/3708189740 'node202' mds.0.108 up:active seq 21

2.删除cephfs文件系统

1.停止mds服务并解挂

#每个文件系统的内核客户端都需要停止mds服务并解挂文件系统目录

# systemctl stop ceph-mds@{node-ip}

# umount /cephfs

2.删除文件系统

# ceph fs rm cephfs --yes-i-really-mean-it

3.创建cephfs文件系统

1.启动mds服务

#每个需要挂载文件系统内核客户端的节点都需要启动mds服务

# systemctl start ceph-mds@{node-ip}
# systemctl status ceph-mds@{node-ip}

2.创建文件系统

格式：ceph fs new {cephfs-name} {metadata-name} {data-name}

#ceph fs new cephfs metadata data

3.查看文件系统信息

# ceph mds dump

4.挂载文件系统

#每个需要挂载文件系统内核客户端的节点都需要

# mkdir /cephfs

# mount -t cephfs 192.168.8.203,192.168.8.202,192.168.8.201:/ /cephfs -o relatime,ceph_quota=3
# df -h

4.cephfs文件系统中增加数据池

1.创建存储池

# ceph osd pool create data1 64 64
pool 'data1' created

# ceph osd dump | grep data1
pool 3 'data1' replicated size 2 min_size 1 crush_ruleset 0 object_hash rjenkins pg_num 64 pgp_num 64 last_change 164 flags hashpspool stripe_width 0

2.cephfs中增加存储池

格式：ceph fs add_data_pool <fs_name> <pool>

# ceph fs add_data_pool cephfs data1
added data pool 3 to fsmap

# ceph fs ls
name: cephfs, metadata pool: metadata, data pools: [data data1 ]

5.cephfs文件系统中移除数据池

格式：ceph fs rm_data_pool <fs_name> <pool>

# ceph fs rm_data_pool cephfs data1
added data pool 3 to fsmap

# ceph fs ls
name: cephfs, metadata pool: metadata, data pools: [data ]