|
 |
d76c62 |
From 647f43ec778b6d5dafb256d5dbe4ad1f0a4e9776 Mon Sep 17 00:00:00 2001
|
|
|
d76c62 |
Message-Id: <647f43ec778b6d5dafb256d5dbe4ad1f0a4e9776@dist-git>
|
|
|
d76c62 |
From: Peter Krempa <pkrempa@redhat.com>
|
|
|
d76c62 |
Date: Tue, 4 Feb 2020 15:07:47 +0100
|
|
|
d76c62 |
Subject: [PATCH] qemu: snapshot: Always rewrite backingStore data when reusing
|
|
|
d76c62 |
existing images
|
|
|
d76c62 |
MIME-Version: 1.0
|
|
|
d76c62 |
Content-Type: text/plain; charset=UTF-8
|
|
|
d76c62 |
Content-Transfer-Encoding: 8bit
|
|
|
d76c62 |
|
|
|
d76c62 |
Don't adopt the backing store data when reusing images provided by the
|
|
|
d76c62 |
user. This will force a backing chain re-probe as users might have
|
|
|
d76c62 |
passed in something unexpected in the overlay where our view of the
|
|
|
d76c62 |
backing chain would not correspond.
|
|
|
d76c62 |
|
|
|
d76c62 |
This is done only for inactive snapshots as there we have way less
|
|
|
d76c62 |
verification.
|
|
|
d76c62 |
|
|
|
d76c62 |
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
|
|
|
d76c62 |
Reviewed-by: Eric Blake <eblake@redhat.com>
|
|
|
d76c62 |
(cherry picked from commit 8e9e73a984165d5e9a82ba1f4531bb30482db5a8)
|
|
|
d76c62 |
|
|
|
d76c62 |
https://bugzilla.redhat.com/show_bug.cgi?id=1524278
|
|
|
d76c62 |
Message-Id: <baa37a0240d05d2441a54e7ad1c1a8648c7e7f65.1580824112.git.pkrempa@redhat.com>
|
|
|
d76c62 |
Reviewed-by: Ján Tomko <jtomko@redhat.com>
|
|
|
d76c62 |
---
|
|
|
d76c62 |
src/qemu/qemu_driver.c | 3 ++-
|
|
|
d76c62 |
1 file changed, 2 insertions(+), 1 deletion(-)
|
|
|
d76c62 |
|
|
|
d76c62 |
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
|
|
|
d76c62 |
index e651c9e819..5c72db2544 100644
|
|
|
d76c62 |
--- a/src/qemu/qemu_driver.c
|
|
|
d76c62 |
+++ b/src/qemu/qemu_driver.c
|
|
|
d76c62 |
@@ -14678,7 +14678,8 @@ qemuDomainSnapshotCreateInactiveExternal(virQEMUDriverPtr driver,
|
|
|
d76c62 |
if (virStorageSourceInitChainElement(newsrc, defdisk->src, false) < 0)
|
|
|
d76c62 |
goto cleanup;
|
|
|
d76c62 |
|
|
|
d76c62 |
- if (virStorageSourceHasBacking(defdisk->src)) {
|
|
|
d76c62 |
+ if (!reuse &&
|
|
|
d76c62 |
+ virStorageSourceHasBacking(defdisk->src)) {
|
|
|
d76c62 |
defdisk->src->readonly = true;
|
|
|
d76c62 |
newsrc->backingStore = g_steal_pointer(&defdisk->src);
|
|
|
d76c62 |
} else {
|
|
|
d76c62 |
--
|
|
|
d76c62 |
2.25.0
|
|
|
d76c62 |
|