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

[Serge Hallyn]

Just a note that the 0.8.1 release available in maverick gives me about
a 50-second save for a 512M memory image (producing 100M outfile).  The
patch listed above and suspected of speeding the saves is not in 0.8.1.
When I hand-apply just that patch, saves take about 8 seconds, but
restore fails.  Presumably taking the whole of latest git (or 0.8.2
whenever it is released) will result in both working and fast
save/restore.

-- 
virsh save is very slow
https://bugs.launchpad.net/bugs/524447
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Status in libvirt virtualization API: Unknown
Status in QEMU: Invalid
Status in “libvirt” package in Ubuntu: Confirmed
Status in “qemu-kvm” package in Ubuntu: Confirmed

Bug description:
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.