XenServer Disk Space Reclaiming

coalescing
When snapshots or clones are deleted on LVM-based, Local EXT and NFS SRs, XenServer automatically reclaims disk space by freeing unused data, a process known as coalescing.XenServer coalesces the disk space while Virtual Machines (VMs) remain running (online coalescing).


[指令]
     coalesce-leaf  <VM-UUID>



參考網址
http://support.citrix.com/article/CTX123400