13.4.3. 为远程块存储配置启动顺序
如果 Pacemaker 集群使用的 LVM 卷组包含位于远程块存储上的一个或多个物理卷，如 iSCSI 目标，则您可以为目标配置 systemd resource-agents-deps 目标和一个 systemd 置入单元，以确保服务在 Pacemaker 启动之前启动。
以下流程将 blk-availability.service 配置为依赖项。blk-availability.service 服务是一个包装程序，它包含 iscsi.service 以及其他服务。如果您的部署需要它，则您可以将 iscsi.service （仅用于 iSCSI）或 remote-fs.target 配置为依赖项，而不是 blk-availability。
流程
创建包含以下内容的置入单元
/etc/systemd/system/resource-agents-deps.target.d/blk-availability.conf：[Unit] Requires=blk-availability.service After=blk-availability.service运行
systemctl daemon-reload命令：# systemctl daemon-reload
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