[Xen-API] Problems with creating snapshot

["Thimo E." <abc@xxxxxxxxxx>]

Hi all,

want to create a snapshot of a VM in XCP 1.6 (using LVM):

The  VM has 2 Disks, one disk with 2047GB and one disk with 4 GB. Both 
disks are on a storage with 2300GB space. XenCenter says:
2055 GB used of 2304 GB total (2055 GB allocated)
--> 250GB free space (checked with vgdisplay)

Now the problem: When I try to create a snapshot with

xe vm-snapshot uuid=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx 
new-name-label=my-snapshot
the command reports:

Error code: SR_BACKEND_FAILURE_44
Error parameters: , There is insufficient space,

How much free space is needed or is there another problem ?

Best regards
  Thimo

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