[Qemu-devel] [Bug 1192065] [NEW] qemu release memory to system

[bhasker]

Public bug reported:

Qemu pre-allocates the maximum balloon amount which is inconvinient if
all of the memory is used up and some other system needs to be added
memory resource

eg:- I have 4GB RAM with 4 virtual systems to be run.
I want each of them to start with 1GB RAM with maximum 2GB possible. This is 
not achievable since qemu pre-allocates the maximum balloon amount which is 
2GBx4 systems . So to start all 4 systems the system needs 8GB RAM rather than 
4GB RAM to start with although I have told initial balloon amount to be 1GB.

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: balloon memory preallocate

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https://bugs.launchpad.net/bugs/1192065

Title:
  qemu release memory to system

Status in QEMU:
  New

Bug description:
  Qemu pre-allocates the maximum balloon amount which is inconvinient if
  all of the memory is used up and some other system needs to be added
  memory resource

  eg:- I have 4GB RAM with 4 virtual systems to be run.
  I want each of them to start with 1GB RAM with maximum 2GB possible. This is 
not achievable since qemu pre-allocates the maximum balloon amount which is 
2GBx4 systems . So to start all 4 systems the system needs 8GB RAM rather than 
4GB RAM to start with although I have told initial balloon amount to be 1GB.

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