Any word on a decision to backport this fix to Lucid? I agree it is not
a terrible bug and more of a lack of a feature, but Lucid will be in use
for some time to come.
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@Brian,
given that there is a workaround, I'm hesitant to do it. There have
been reported bugs with ballooning in heavy overcommit situations, so
even if ballooning is working fine for some users I'd rather not cause
other users to switch from not using it to using it.
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Potentially better than copying the /usr/bin/kvm binary to
/usr/bin/kvm.real is to use dpkg-dirvert, then the shell script it's
replaced with (as per Michael R. Hines' suggestion) won't be over-
written on upgrade of the qemu-kvm package:
$ sudo dpkg-divert --add --rename --divert
Potentially better than copying the /usr/bin/kvm binary to
/usr/bin/kvm.real is to use dpkg-dirvert, then the shell script it's
replaced with (as per Michael R. Hines' suggestion) won't be over-
written on upgrade of the qemu-kvm package:
$ sudo dpkg-divert --add --rename --divert
This does not seem fixed in 10.04.1. The fix would apparently belong in
Libvirt but the changelogs for the Libvirt package in 10.04.1 don't
indicate anything and no KVM guest processes on my hosts running 10.04.1
show the -balloon virtio flag. I had to use a wrapper script around
** Changed in: libvirt (Ubuntu)
Status: Confirmed = Fix Released
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kvm memory ballooning is unusable in Lucid
https://bugs.launchpad.net/bugs/579723
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** Changed in: libvirt (Ubuntu)
Status: Confirmed = Fix Released
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kvm memory ballooning is unusable in Lucid
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I see that there is a fix release out there, but it's not clear how has
it been fixed. Is it on libvirt? kvm? Is it available currently on
Lucid? Maverick?
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kvm memory ballooning is unusable in Lucid
https://bugs.launchpad.net/bugs/579723
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Nevermind seems to working. Sorry for jumping the gun.
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I see that there is a fix release out there, but it's not clear how has
it been fixed. Is it on libvirt? kvm? Is it available currently on
Lucid? Maverick?
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kvm memory ballooning is unusable in Lucid
https://bugs.launchpad.net/bugs/579723
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Nevermind seems to working. Sorry for jumping the gun.
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** Changed in: libvirt (Ubuntu)
Status: Fix Released = Confirmed
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** Changed in: libvirt (Ubuntu)
Status: Fix Released = Confirmed
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This is a far less intrusive workaround:
bash$ cd /usr/bin
bash$ mv kvm kvm.real
bash$ cat kvm
#!/bin/bash
exec /usr/bin/kvm.bak -balloon virtio $@
... doesn't require modifying libvirt or anybody else.
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Ooops, that should be: exec /usr/bin/kvm.real -balloon virtio $@
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This is a far less intrusive workaround:
bash$ cd /usr/bin
bash$ mv kvm kvm.real
bash$ cat kvm
#!/bin/bash
exec /usr/bin/kvm.bak -balloon virtio $@
... doesn't require modifying libvirt or anybody else.
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kvm memory ballooning is unusable in Lucid
https://bugs.launchpad.net/bugs/579723
Ooops, that should be: exec /usr/bin/kvm.real -balloon virtio $@
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libvirt in maverick should have this fix (and does on my install). Are you
able to confirm?
** Changed in: libvirt (Ubuntu)
Status: New = Fix Released
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libvirt in maverick should have this fix (and does on my install). Are you
able to confirm?
** Changed in: libvirt (Ubuntu)
Status: New = Fix Released
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I also hit this bug after upgrading to lucid, and found an explanation
of the root of the problem here: http://www.mail-archive.com/libvirt-
us...@redhat.com/msg00328.html.
The upstream fix is
http://libvirt.org/git/?p=libvirt.git;a=commit;h=7a90f21655aedc35cf711264498ebb4a1b783c8a.
It applies
I also hit this bug after upgrading to lucid, and found an explanation
of the root of the problem here: http://www.mail-archive.com/libvirt-
us...@redhat.com/msg00328.html.
The upstream fix is
http://libvirt.org/git/?p=libvirt.git;a=commit;h=7a90f21655aedc35cf711264498ebb4a1b783c8a.
It applies
I'm afraid I'm still having some issues. I'm most likely just missing
some subtle thing entirely...
I edited the apparmor profile, and the vm starts just fine. I update the
memory with both setmaxmem and setmem, however, a virsh dominfo qa-matt
still yields:
r...@qa:~# virsh dominfo qa-matt
Id:
I'm afraid I'm still having some issues. I'm most likely just missing
some subtle thing entirely...
I edited the apparmor profile, and the vm starts just fine. I update the
memory with both setmaxmem and setmem, however, a virsh dominfo qa-matt
still yields:
r...@qa:~# virsh dominfo qa-matt
Id:
This sounds like you need to adjust the libvirtd apparmor profile.
Edit
/etc/apparmor.d/abstractions/libvirt-qemu
and add the following line:
/usr/bin/kvm-balloon rmix,
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This sounds like you need to adjust the libvirtd apparmor profile.
Edit
/etc/apparmor.d/abstractions/libvirt-qemu
and add the following line:
/usr/bin/kvm-balloon rmix,
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Have you checked the file's execution bit?
chmod 0755 kvm-balloon
** Description changed:
kvm/qemu doesn't enable ballooning by default anymore (the man page still
claims that ballooning is enabled by default) .
There is no easy way to enable it with libvirt.
libvirt should add
I have, sorry I didn't post that. Yes, I can execute it from my
path(Can't give the exact output since I'm away from that machine at the
moment though).
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Have you checked the file's execution bit?
chmod 0755 kvm-balloon
** Description changed:
kvm/qemu doesn't enable ballooning by default anymore (the man page still
claims that ballooning is enabled by default) .
There is no easy way to enable it with libvirt.
libvirt should add
I have, sorry I didn't post that. Yes, I can execute it from my
path(Can't give the exact output since I'm away from that machine at the
moment though).
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I also find this is a problem, but your fix doesn't work.
# cat /usr/bin/kvm-balloon
#!/bin/bash
/usr/bin/kvm -balloon virtio $@
# virsh start qa-matt
error: Failed to start domain qa-matt
error: monitor socket did not show up.: No such file or directory
The VM's XML(or, part of it anyway)
I also find this is a problem, but your fix doesn't work.
# cat /usr/bin/kvm-balloon
#!/bin/bash
/usr/bin/kvm -balloon virtio $@
# virsh start qa-matt
error: Failed to start domain qa-matt
error: monitor socket did not show up.: No such file or directory
The VM's XML(or, part of it anyway)
try adding quotes around $@ in kvm-balloon script:
#!/bin/sh
/usr/bin/kvm -balloon virtio $@
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try adding quotes around $@ in kvm-balloon script:
#!/bin/sh
/usr/bin/kvm -balloon virtio $@
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Thanks,
I still have an error message if I change the kvm to kvm-balloon in
/etc/libvirt/qemu/Duffman.xml :
r...@homer:~# virsh start Duffman
error: Failed to start domain Duffman
error: internal error cannot parse QEMU version number in ''
However both are executables, and both displays the
Thanks,
I still have an error message if I change the kvm to kvm-balloon in
/etc/libvirt/qemu/Duffman.xml :
r...@homer:~# virsh start Duffman
error: Failed to start domain Duffman
error: internal error cannot parse QEMU version number in ''
However both are executables, and both displays the
** Changed in: libvirt (Ubuntu)
Importance: Undecided = Low
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kvm memory ballooning is unusable in Lucid
https://bugs.launchpad.net/bugs/579723
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** Changed in: libvirt (Ubuntu)
Importance: Undecided = Low
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