[libvirt] qmp monitor is broken
Hi,
$subject says it. Bisecting points to:
commit 23673ca740e0eda66901ca801a5a901df378b063
Author: Anthony Liguori <aliguori(a)us.ibm.com>
Date: Tue Mar 5 23:21:23 2013 +0530
qemu-char: add watch support
This allows a front-end to request for a callback when the backend
is writable again.
Signed-off-by: Anthony Liguori <aliguori(a)us.ibm.com>
Signed-off-by: Amit Shah <amit.shah(a)redhat.com>
Symtoms: "virsh start" hangs (not always, but most of the time). When
killing qemu it prints an error message:
error: Failed to start domain fedora-org-virtio
error: internal error cannot parse json {"return": [{"name":
"chardev-remove"}, {"name": "chardev-add"},
{"name": "query-target"},
{"name": "query-cpu-definitions"}, {"name":
"query-machines"}, {"name":
"device-list-properties"}, {"name": "qom-list-types"},
{"name":
"change-vnc-password"}, {"name": "nbd-server-stop"},
{"name":
"nbd-server-add"}, {"name": "nbd-server-start"},
{"name": "qom-get"},
{"name": "qom-set"}, {"name": "qom-list"},
{"name": "query-block-jobs"},
{"name": "query-balloon"}, {"name":
"query-migrate-capabilities"},
{"name": "migrate-set-capabilities"}, {"name":
"query-migrate"},
{"name": "query-uuid"}, {"name": "query-name"},
{"name": "query-spice"},
{"name": "query-vnc"}, {"name": "query-mice"},
{"name": "query-status"},
{"name": "query-kvm"}, {"name": "query-pci"},
{"name": "query-cpus"},
{"name": "query-blockstats"}, {"name":
"query-block"}, {"name":
"query-chardev"}, {"name": "query-events"},
{"name": "query-commands"},
{"name": "query-version"}, {"name":
"human-monitor-command"}, {"name":
"qmp_capabilities
So it looks like a bulky qmp reply is written incomplete (or corrupted)
and libvirt waits forever for the missing bits ...
cheers,
Gerd