libvirt/SOURCES/libvirt-qemu_hotplug-Don-t-lose-created-flag-in-qemuDomainChangeNet.patch

68 lines
2.7 KiB
Diff

From 7a7c3f71744b2211bdf50332918495d3042e3236 Mon Sep 17 00:00:00 2001
Message-ID: <7a7c3f71744b2211bdf50332918495d3042e3236.1706524416.git.jdenemar@redhat.com>
From: Michal Privoznik <mprivozn@redhat.com>
Date: Wed, 24 Jan 2024 18:43:21 +0100
Subject: [PATCH] qemu_hotplug: Don't lose 'created' flag in
qemuDomainChangeNet()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
After v9.1.0-rc1~116 we track whether it's us who created a
macvtap or not. But when updating a vNIC its definition might be
replaced with a new one (though, ifname is not allowed to
change), e.g. to reflect new QoS, link state, etc.
Now, the fact whether we created macvtap for given vNIC is stored
in net->privateData->created. And replacing definition is done by
simply freeing the old definition and making the pointer point to
the new one. But this does not preserve the 'created' flag, which
in turn means when a domain is shutting off, the macvtap is not
removed (see loop inside of qemuProcessStop()).
Copy this flag into new definition and leave a note in
_qemuDomainNetworkPrivate struct.
Fixes: 61d1b9e6592660121aeda66bf7adbcd39de06aa8
Resolves: https://issues.redhat.com/browse/RHEL-22714
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit ccfc5c1e1637d20e479fafde7aa3ea4c6fb29e21)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
---
src/qemu/qemu_domain.h | 2 ++
src/qemu/qemu_hotplug.c | 5 +++++
2 files changed, 7 insertions(+)
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index fa566dded6..0b5af5d014 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -420,6 +420,8 @@ typedef struct _qemuDomainNetworkPrivate qemuDomainNetworkPrivate;
struct _qemuDomainNetworkPrivate {
virObject parent;
+ /* Don't forget to possibly copy these members in qemuDomainChangeNet(). */
+
/* True if the device was created by us. Otherwise we should
* avoid removing it. Currently only used for
* VIR_DOMAIN_NET_TYPE_DIRECT. */
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 0e45bd53e1..31b00e05ca 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -4166,6 +4166,11 @@ qemuDomainChangeNet(virQEMUDriver *driver,
else
VIR_WARN("Unable to release network device '%s'", NULLSTR(olddev->ifname));
}
+
+ /* Carry over fact whether we created the device or not. */
+ QEMU_DOMAIN_NETWORK_PRIVATE(newdev)->created =
+ QEMU_DOMAIN_NETWORK_PRIVATE(olddev)->created;
+
virDomainNetDefFree(olddev);
/* move newdev into the nets list, and NULL it out from the
* virDomainDeviceDef that we were given so that the caller
--
2.43.0