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openvswitch: Delete port if it exists while adding a new one

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If the openvswitch service is stopped, and is followed by destroying a
VM, the openvswitch bridge translates into a state where it doesn't
recover the port configuration. While it successfully fetches data
from the internal DB, since the corresponding virtual interface does
not exists anymore the whole recovery process fails leaving restarted
VM with inability to connect to the bridge. The following set of
commands will trigger the problem:

virsh start vm
service openvswitch-switch stop
virsh destroy vm
service openvswitch-switch start
virsh start vm

Signed-off-by: Chunhe Li <lichunhe@huawei.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Chunhe Li 2014-07-14 12:37:50 +02:00 committed by Michal Privoznik
parent 1c89f6ebd4
commit 33445ce844
1 changed files with 2 additions and 2 deletions
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4
src/util/virnetdevopenvswitch.c
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@ -84,8 +84,8 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
cmd = virCommandNew(OVSVSCTL);
virCommandAddArgList(cmd, "--timeout=5", "--", "--may-exist", "add-port",
brname, ifname, NULL);
virCommandAddArgList(cmd, "--timeout=5", "--", "--if-exists", "del-port",
ifname, "--", "add-port", brname, ifname, NULL);
if (virtVlan && virtVlan->nTags > 0) {