[Qemu-devel] [Bug 524447] Re: virsh save is very slow

[Launchpad Bug Tracker]

This bug was fixed in the package qemu-kvm - 0.12.3+noroms-0ubuntu9.18

---------------
qemu-kvm (0.12.3+noroms-0ubuntu9.18) lucid-proposed; urgency=low

  [ Michael Tokarev ]
  * 
QEMUFileBuffered:-indicate-that-were-ready-when-the-underlying-file-is-ready.diff
   (patch from upstream to speed up migration dramatically)
   (closes: #597517) (LP: #524447)

  [ Serge Hallyn ]
  * debian/control: make qemu-common replace qemu (<< 0.12.3+noroms-0ubuntu9.17)
    (LP: #592010)
 -- Serge Hallyn <address@hidden>   Mon, 13 Feb 2012 11:24:18 -0600

** Changed in: qemu-kvm (Ubuntu Lucid)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/524447

Title:
  virsh save is very slow

Status in libvirt virtualization API:
  Unknown
Status in QEMU:
  Fix Released
Status in “libvirt” package in Ubuntu:
  Invalid
Status in “qemu-kvm” package in Ubuntu:
  Fix Released
Status in “libvirt” source package in Lucid:
  Won't Fix
Status in “qemu-kvm” source package in Lucid:
  Fix Released
Status in “libvirt” source package in Maverick:
  Won't Fix
Status in “qemu-kvm” source package in Maverick:
  Won't Fix
Status in “qemu-kvm” package in Debian:
  Fix Released

Bug description:
  ==================================
  SRU Justification:
  1. impact: 'qemu save' is slow
  2. how addressed: a patch upstream fixes the case when a file does not 
announce when it is ready.
  3. patch: see the patch in linked bzr trees
  4. TEST CASE: see comment #4 for a specific recipe
  5. regression potential:  this patch only touches the vm save path.
  ==================================

  As reported here: http://www.redhat.com/archives/libvir-
  list/2009-December/msg00203.html

  "virsh save" is very slow - it writes the image at around 1MB/sec on
  my test system.

  (I think I saw a bug report for this issue on Fedora's bugzilla, but I
  can't find it now...)

  Confirmed under Karmic.

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