Re: [libvirt] [PATCH 2/3] qemu: Check for drop-cache capability
On 8/13/19 11:08 AM, Jiri Denemark wrote:
QEMU 4.0.0 and newer automatically drops caches at the end of
migration.
Let's check for this capability so that we can allow migration when disk
cache is turned on.
Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com>
---
src/qemu/qemu_capabilities.c | 2 ++
+++ b/src/qemu/qemu_capabilities.h
@@ -517,6 +517,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check
*/
/* 335 */
QEMU_CAPS_DEVICE_BOCHS_DISPLAY, /* -device bochs-display */
+ QEMU_CAPS_MIGRATION_FILE_DROP_CACHE, /* migration with disk cache on is safe for
typ='file' disks */
s/typ/type/
long line, is that a problem?
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
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