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


From: Clint Byrum
Subject: [Qemu-devel] [Bug 524447] Re: virsh save is very slow
Date: Mon, 20 Feb 2012 15:54:23 -0000

Thanks Jeff! Barring any regressions being reported, this should arrive
in lucid-updates around the 24th.

** Tags removed: verification-needed
** Tags added: verification-done

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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 Committed
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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