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[Claudiu Belu <cbelu@xxxxxxxxxxxxxxxxxxxxxx>]

Public bug reported:

For each started VM, Hyper-V creates on the local disk a memory file for
each VM. The memory file has the same size as the assigned VM memory.
For example, if an instance with 4 GB ram starts, a 4 GB file is
created.

This can cause scheduling issues, especially on hosts which have large
quantities of memory, but  not a very large local disk, resulting in
instances failing to spawn due to "insufficient local disk".

** Affects: nova
     Importance: Undecided
     Assignee: Claudiu Belu (cbelu)
         Status: New

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https://bugs.launchpad.net/bugs/1505681

Title:
  Hyper-V creates VM memory file on the local disk for each VM

Status in OpenStack Compute (nova):
  New

Bug description:
  For each started VM, Hyper-V creates on the local disk a memory file
  for each VM. The memory file has the same size as the assigned VM
  memory. For example, if an instance with 4 GB ram starts, a 4 GB file
  is created.

  This can cause scheduling issues, especially on hosts which have large
  quantities of memory, but  not a very large local disk, resulting in
  instances failing to spawn due to "insufficient local disk".

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