On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian <Christian.Grundmann@fabasoft.com> wrote:

Hi,

is there a way to „shrink“ a thin disk image to reclaim deleted space like using virt-sparsify?


Yes, if the underlying file system supports it (NFS, for example, might need to be 4.2 and above).
 

Or can it be done by making a snapshot and clone the VM to a new one?


Another suggestion: use the VDSM hooks for discard ('diskunmap') and run 'fstrim' from within the guest. 
Y.

 

Thanks a lot

Christian


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