使用heketi向glusterfs集群添加磁盘

1. 磁盘处理

#查看磁盘
[root@ecs-5195-0623507 ~]# lsblk
#保证磁盘是以下状态（无磁盘分区）
NAME                                                                              MAJ:MIN RM  SIZE  RO TYPE MOUNTPOINT
vdc                                                                               253:32   0  1000G 0  disk

##如果磁盘是以下状态（存在磁盘分区）
vdc                                                                               253:32   0 1000G  0 disk
├─vdc1                                                                            253:33   0   16M  0 part
└─vdc2                                                                            253:34   0 1000G  0 part

#进行以下步骤（删除磁盘分区）
[root@ecs-5195-0623507 ~]# fdisk /dev/vdc
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Command (m for help): d
Selected partition 1
Partition 1 is deleted

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

[root@ecs-5195-0623507 ~]# mkfs.xfs -f /dev/vdc
meta-data=/dev/vdc               isize=512    agcount=4, agsize=65536000 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=262144000, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=128000, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

[root@ecs-5195-0623507 ~]#  pvcreate -ff --metadatasize=128M --dataalignment=256K /dev/vdc
  Wiping xfs signature on /dev/vdc.
  Physical volume "/dev/vdc" successfully created.

2. 为heketi磁盘配置文件添加新磁盘

[root@ecs-5195-0623507 ~]# vim /etc/heketi/topology.json
{
    "clusters": [
        {
            "nodes": [
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "192.168.0.117"
                            ],
                            "storage": [
                                "192.168.0.117"
                            ]
                        },
                        "zone": 1
                    },
                    "devices": [
                        "/dev/vdb"
                    ]
                },
                {													####新增内容开始
                    "node": {
                        "hostnames": {
                            "manage": [
                                "192.168.0.117"		#注意修改ip地址
                            ],
                            "storage": [
                                "192.168.0.117"		#
                            ]
                        },
                        "zone": 1
                    },									
                    "devices": [
                        "/dev/vdc"					#注意修改磁盘名称
                    ]
                },													####新增内容结束
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "192.168.0.151"
                            ],
                            "storage": [
                                "192.168.0.151"
                            ]
                        },
                        "zone": 1
                    },
                    "devices": [
                        "/dev/vdb"
                    ]
                },
                {
                    "node": {
                        "hostnames": {
                            "manage": [
                                "192.168.0.152"
                            ],
                            "storage": [
                                "192.168.0.152"
                            ]
                        },
                        "zone": 1
                    },
                    "devices": [
                        "/dev/vdb"
                    ]
                }
            ]
        }
    ]
}

3. 增加磁盘

[root@ecs-5195-0623507 ~]# heketi-cli topology load --json=/etc/heketi/topology.json
        Found node 192.168.0.117 on cluster 292465319051d0be61c8ec0f3c33f051
                Found device /dev/vdb
        Found node 192.168.0.117 on cluster 292465319051d0be61c8ec0f3c33f051
                Adding device /dev/vdc ... OK
        Found node 192.168.0.151 on cluster 292465319051d0be61c8ec0f3c33f051
                Found device /dev/vdb
        Found node 192.168.0.152 on cluster 292465319051d0be61c8ec0f3c33f051
                Found device /dev/vdb