红帽全球峰会7.3. Ceph 卷实用程序
Ceph OSD 无法启动，因为 udev 重置 BlueStore DB 和 WAL 设备的权限
当使用 ceph-volume lvm create 命令或指定分区（使用 Ceph Ansible 的 lvm_volume 选项）为 OSD 指定 BlueStore DB 和 WAL 分区时，可能会导致这些设备在启动时失败。udev 子系统将分区权限重置为 root:disk。
要临时解决这个问题，请手动启动 systemd ceph-volume 服务。例如，要启动 ID 为 8 的 OSD，请运行以下命令： systemctl start 'ceph-volume@lvm-8-*'。您还可以使用 service 命令，例如： service ceph-volume@lvm-8-4c6ddc44-903osgi7d-903c-63b5a789ade5 start。手动启动 OSD 会导致分区具有正确的权限 ceph:ceph。
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