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

[Serge Hallyn]

I'm sorry - per the rules listed in
https://wiki.ubuntu.com/StableReleaseUpdates, only bugs which are >=
high priority are eligible for SRU. If you feel this bug should be high
priority, please say so (with rationale) here.

An updated package for lucid through natty will be placed in the ubuntu-
virt ppa (https://launchpad.net/~ubuntu-virt/+archive/ppa) as an
alternative way to get this fix.


** Changed in: qemu-kvm (Ubuntu Lucid)
       Status: Fix Committed => Won't Fix

** Changed in: qemu-kvm (Ubuntu Maverick)
       Status: In Progress => Won't Fix

** Changed in: libvirt (Ubuntu Lucid)
       Status: New => Won't Fix

** Changed in: libvirt (Ubuntu Maverick)
       Status: New => Won't Fix

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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:
  Won't Fix
Status in “libvirt” source package in Maverick:
  Won't Fix
Status in “qemu-kvm” source package in Maverick:
  Won't Fix

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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