10.2.5. 运行 lv-create.yml Ansible Playbook

lv-create.yml playbook 的目的是在单个 NVMe 上为对象网关存储桶索引和日志创建逻辑卷。它通过使用 osd_scenario=lvm 来实现此目的，而不是使用 osd_scenario=non-collocated。通过自动执行部分复杂的 LVM 创建和配置，lv -create.yml Ansible playbook 使以这种方式配置 Ceph 变得更加简单。

  1. 以 root 用户身份，将 lv-create.yml Ansible playbook 复制到当前目录中： 

    # cp infrastructure-playbooks/lv-create.yml .

  2. 确保存储设备是 raw

    在运行 lv-create.yml 以便在 NVMe 设备和 HDD 设备中创建逻辑卷之前，请确保它们中没有文件系统、GPT、RAID 或其他签名。

    如果它们不是原始的，当运行 lv-create.yml 时可能会失败，并显示以下错误： 

    device /dev/sdc excluded by a filter

  3. wipe 存储设备签名（可选）

    如果设备有签名，您可以使用 wipefs 擦除它们。

    以下是使用 wipefs 擦除设备的示例： 

    [root@c04-h01-6048r ~]# wipefs -a /dev/sdc
/dev/sdc: 8 bytes were erased at offset 0x00000200 (gpt): 45 46 49 20 50 41 52 54
/dev/sdc: 8 bytes were erased at offset 0x1d19ffffe00 (gpt): 45 46 49 20 50 41 52 54
/dev/sdc: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa
/dev/sdc: calling ioclt to re-read partition table: Success
[root@c04-h01-6048r ~]# wipefs -a /dev/sdd
/dev/sdd: 8 bytes were erased at offset 0x00000200 (gpt): 45 46 49 20 50 41 52 54
/dev/sdd: 8 bytes were erased at offset 0x1d19ffffe00 (gpt): 45 46 49 20 50 41 52 54
/dev/sdd: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa
/dev/sdd: calling ioclt to re-read partition table: Success
[root@c04-h01-6048r ~]# wipefs -a /dev/sde
/dev/sde: 8 bytes were erased at offset 0x00000200 (gpt): 45 46 49 20 50 41 52 54
/dev/sde: 8 bytes were erased at offset 0x1d19ffffe00 (gpt): 45 46 49 20 50 41 52 54
/dev/sde: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa
/dev/sde: calling ioclt to re-read partition table: Success
[root@c04-h01-6048r ~]# wipefs -a /dev/sdf
/dev/sdf: 8 bytes were erased at offset 0x00000200 (gpt): 45 46 49 20 50 41 52 54
/dev/sdf: 8 bytes were erased at offset 0x1d19ffffe00 (gpt): 45 46 49 20 50 41 52 54
/dev/sdf: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa
/dev/sdf: calling ioclt to re-read partition table: Success

  4. 运行 lv-teardown.yml Ansible playbook:

    在运行 lv- create.yml 前，始终运行 lv-teardown.yml:

    以 root 用户身份，将 lv-teardown.yml Ansible playbook 复制到当前目录中： 

    # cp infrastructure-playbooks/lv-teardown.yml .

    运行 lv-teardown.yml Ansible playbook: 

    $ ansible-playbook lv-teardown.yml -i hosts
    警告

    运行 lv-teardown.yml Ansible 脚本时请谨慎操作。它销毁数据。确保您已备份了任何重要数据。

  5. 运行 lv-create.yml Ansible playbook: 

    $ ansible-playbook lv-create.yml -i hosts