默认情况下VDI 最大只能创建2T空间

先通过

[root@xen-2]# xe sr-list

uuid ( RO)                : 212563a0-ef8b-4eb8-4ca9-******
name-label ( RW): raid0-sas
name-description ( RW): 
host ( RO): xen-2
type ( RO): lvm
content-type ( RO): user

[root@xen-2]# xe vdi-create type=user virtual-size=8000GiB sr-uuid=212563a0-ef8b-4eb8-4ca9-****** name-label=win2008_data sm-config:type=raw

Error code: SR_BACKEND_FAILURE_79
Error parameters: , VDI Invalid size [opterr=VDI size must be between 1 MB and 2093050 MB],

解决方法:

先创建一个空间小于2T的

[root@xen-2]# xe vdi-create type=user virtual-size=2000GiB sr-uuid=212563a0-ef8b-4eb8-4ca9-****** name-label=data sm-config:type=raw
3eebdc12-ae3f-44c8-a44f-******

[root@xen-2]# vgs

 VG_XenStorage-212563a0-ef8b-4eb8-4ca9-******   1   2   0 wz--n-  43.66t  43.36t

通过lvs找到对应的LV关系

  --- Logical volume ---
  LV Path                /dev/VG_XenStorage-212563a0-ef8b-4eb8-4ca9-******/LV-3eebdc12-ae3f-44c8-a44f-******
  LV Name                LV-3eebdc12-ae3f-44c8-a44f-******
  VG Name                VG_XenStorage-212563a0-ef8b-4eb8-4ca9-******
  LV UUID                6iNpla-T7kL-OdaA-CO4m-qVqa-PUmb-7KVbB7
  LV Write Access        read/write
  LV Creation host, time klicen-xen-2, 2017-04-27 15:15:59 +0800
  LV Status              NOT available
  LV Size                1.95 TiB
  Current LE             512000
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto

[root@xen-2]# lvextend -L +6000G LV-3eebdc12-ae3f-44c8-a44f-******* --config global{metadata_read_only=0}

 [root@xen-2]xe vdi-list params=all

点击Rescan 磁盘空间就看见了，然后在相应的主机中关联磁盘就好了。

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xenserver 突破VID 2T限制