File 0040-xen-ignore-live-parameter-from-xen-.patch of Package qemu.13217

Overview Repositories Revisions Requests Users Attributes Meta

File 0040-xen-ignore-live-parameter-from-xen-.patch of Package qemu.13217

From: Olaf Hering <olaf@aepfle.de>
Date: Tue, 8 Jan 2019 14:20:08 +0100
Subject: xen: ignore live parameter from xen-save-devices-state

The final step of xl migrate|save for an HVM domU is saving the state of
qemu. This also involves releasing all block devices. While releasing
backends ought to be a separate step, such functionality is not
implemented.

Unfortunately, releasing the block devices depends on the optional
'live' option. This breaks offline migration with 'virsh migrate domU
dom0' because the sending side does not release the disks, as a result
the receiving side can not properly claim write access to the disks.

As a minimal fix, remove the dependency on the 'live' option. Upstream
may fix this in a different way, like removing the newly added 'live'
parameter entirely.

Fixes: 5d6c599fe1 ("migration, xen: Fix block image lock issue on live migration")

[OH: BSC#1079730, BSC#1101982, BSC#1063993]
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
 migration/savevm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/savevm.c b/migration/savevm.c
index 9e45fb4f3f..47d4c51186 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2602,7 +2602,7 @@ void qmp_xen_save_devices_state(const char *filename, bool has_live, bool live,
          * So call bdrv_inactivate_all (release locks) here to let the other
          * side of the migration take controle of the images.
          */
-        if (live && !saved_vm_running) {
+        if (!saved_vm_running) {
             ret = bdrv_inactivate_all();
             if (ret) {
                 error_setg(errp, "%s: bdrv_inactivate_all() failed (%d)",

Places

File 0040-xen-ignore-live-parameter-from-xen-.patch of Package qemu.13217

Places