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XenServer 隐藏的虚拟机

2014-11-28 by dongnan

环境

CloudStack 4.4
XenServer 6.2

问题描述

从 Pool 移除主机时提示错误：

xe pool-eject host-uuid=47d72d9a-a834-4c60-abe1-b161b93b38d2

WARNING: Ejecting a host from the pool will reinitialise that host's local SRs.
WARNING: Any data contained with the local SRs will be lost.
The following VDI objects will be destroyed:
VDI: b7e18265-f74d-4920-a6d1-ad6a132f56cf (base copy)
....
VDI: 8a07e413-9ac5-45f4-a88b-41c299c714f1 (SCSI 5:0:0:0)
Type 'yes' to continue
yes # 输入yes
This operation cannot be performed because this VDI is in use by some other operation
vdi: 06c852d1-47f5-41a1-86d9-65961af7fd7e (New virtual disk (1))
operation: <unknown>

虚拟机的问题

按照提示查看这个虚拟机

首先查看该VDI信息

xe vdi-param-list uuid=06c852d1-47f5-41a1-86d9-65961af7fd7e

uuid ( RO)                    : 06c852d1-47f5-41a1-86d9-65961af7fd7e
              name-label ( RW): New virtual disk (1)
        name-description ( RW):
           is-a-snapshot ( RO): false
             snapshot-of ( RO): <not in="" database="">
               snapshots ( RO):
           snapshot-time ( RO): 19700101T00:00:00Z
      allowed-operations (SRO): clone; copy; snapshot
      current-operations (SRO):
                 sr-uuid ( RO): d72b2a29-c019-74f4-6b98-2765582d4846
           sr-name-label ( RO): Local storage
               vbd-uuids (SRO): 980f6e6c-a13d-2eb2-b5d3-29067e97f052    # 这里
         crashdump-uuids (SRO):
            virtual-size ( RO): 214748364800
    physical-utilisation ( RO): 215176183808
                location ( RO): 06c852d1-47f5-41a1-86d9-65961af7fd7e
                    type ( RO): User
                sharable ( RO): false
               read-only ( RO): false
            storage-lock ( RO): false
                 managed ( RO): true
                  parent ( RO): <not in="" database="">
                 missing ( RO): false
            other-config (MRW): content_id: d5d68639-12db-efdd-0f91-02bca2061be9
           xenstore-data (MRO):
               sm-config (MRO): vdi_type: vhd; vmhint: OpaqueRef:4254bb70-d111-bf78-191c-47ca664bbd54
                 on-boot ( RW): persist
           allow-caching ( RW): false
         metadata-latest ( RO): false
        metadata-of-pool ( RO): <not in="" database="">

根据VDI查询VBD信息

xe vbd-param-list uuid=980f6e6c-a13d-2eb2-b5d3-29067e97f052

uuid ( RO)                        : 980f6e6c-a13d-2eb2-b5d3-29067e97f052
                     vm-uuid ( RO): 83670073-de0d-482e-9370-5ea894fd96f6    # 这里
               vm-name-label ( RO): Control domain on host: xenserver-23317
                    vdi-uuid ( RO): 06c852d1-47f5-41a1-86d9-65961af7fd7e
              vdi-name-label ( RO): New virtual disk (1)
          allowed-operations (SRO): pause; unpause; attach; unplug_force; unplug
          current-operations (SRO):
                       empty ( RO): false
                      device ( RO): sm/backend/d72b2a29-c019-74f4-6b98-2765582d4846/06c852d1-47f5-41a1-86d9-65961af7fd7e
                  userdevice ( RW): 0
                    bootable ( RW): false
                        mode ( RW): RO
                        type ( RW): Disk
                 unpluggable ( RW): true
          currently-attached ( RO): true
                  attachable ( RO): true
                storage-lock ( RO): false
                 status-code ( RO): 0
               status-detail ( RO):
          qos_algorithm_type ( RW):
        qos_algorithm_params (MRW):
    qos_supported_algorithms (SRO):
                other-config (MRW): task_id: OpaqueRef:754d73b0-d3ea-a0ce-9447-0e650be80d9c
                 io_read_kbs ( RO): <unknown>
                io_write_kbs ( RO): <unknown>

根据VBD查询VM信息

xe vm-list uuid=83670073-de0d-482e-9370-5ea894fd96f6

uuid ( RO)           : 83670073-de0d-482e-9370-5ea894fd96f6
     name-label ( RW): Control domain on host: xenserver-23317
    power-state ( RO): running

删除隐藏的虚拟机

在 XenCenter 查看隐藏的虚拟机

删除隐藏的虚拟机

其它

如果即使删除了隐藏的vm ，还是无法从pool中移除主机？

估计是此 xenserver 作为源 pool master host，配置文件出错导致，不过在重启此 xenserver 时却找到了另外的方法，如下图

  • 第1步 reboot xenserver
  • 第2步 destorying host "xenserver XX"

验证

xe host-list

uuid ( RO)                : 584e8d5d-f461-4bf2-9a2b-3f99e38059c5
          name-label ( RW): xenserver-23319
    name-description ( RW): Default install of XenServer

按照以上方法成功pool中只有一台xenserver，被移除的xenserver启动后会无法连接pool master 重装即可。

小结

从 pool 移除某主机时，提示有活动的vdi，根据 vdi 查找运行的vm 为 Control domain on host: xenserver-23317。

此 vm为隐藏，在 xenserver 不可见，此vm 导致无法从pool 删除主机，可能是由于导出/导入 vm 过程中断，遗留下来的。

参考

this operation cannot be performed because a VDI is in use by some other operation

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