Xenserver does not reclaim space after deleting VDI or Snapshot

In most cases removing old snapshots and then initiating a scan of the SR has resolved this for me.

vhd-util scan -f -m “VHD-*” -l “VG_XenStorage-<uuid_of_SR>” –p

References:

https://sysadmino.wordpress.com/2014/03/03/xenserver-does-not-reclaim-space-after-deleting-vdi-or-snapshot/

https://techblog.jeppson.org/2015/02/reclaim-lost-space-xenserver-6-5/