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 <serge.hal...@ubuntu.com> 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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