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[Qemu-devel] [PATCH v2 2/3] qcow2: Do not mark inactive images corrupt
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH v2 2/3] qcow2: Do not mark inactive images corrupt |
Date: |
Wed, 6 Jun 2018 21:37:01 +0200 |
When signaling a corruption on a read-only image, qcow2 already makes
fatal events non-fatal (i.e., they will not result in the image being
closed, and the image header's corrupt flag will not be set). This is
necessary because we cannot set the corrupt flag on read-only images,
and it is possible because further corruption of read-only images is
impossible.
Inactive images are effectively read-only, too, so we should do the same
for them. bdrv_is_writable() can tell us whether an image can actually
be written to, so use its result instead of !bs->read_only.
(Otherwise, the assert(!(bs->open_flags & BDRV_O_INACTIVE)) in
bdrv_co_pwritev() will fail, crashing qemu.)
Cc: address@hidden
Signed-off-by: Max Reitz <address@hidden>
---
block/qcow2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 6b2d88759d..6fa5e1d71a 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -4569,7 +4569,7 @@ void qcow2_signal_corruption(BlockDriverState *bs, bool
fatal, int64_t offset,
char *message;
va_list ap;
- fatal = fatal && !bs->read_only;
+ fatal = fatal && bdrv_is_writable(bs);
if (s->signaled_corruption &&
(!fatal || (s->incompatible_features & QCOW2_INCOMPAT_CORRUPT)))
--
2.17.0
- [Qemu-devel] [PATCH v2 0/3] qcow2: Do not mark inactive images corrupt, Max Reitz, 2018/06/06
- [Qemu-devel] [PATCH v2 1/3] block: Make bdrv_is_writable() public, Max Reitz, 2018/06/06
- [Qemu-devel] [PATCH v2 2/3] qcow2: Do not mark inactive images corrupt,
Max Reitz <=
- [Qemu-devel] [PATCH v2 3/3] iotests: Add case for a corrupted inactive image, Max Reitz, 2018/06/06
- Re: [Qemu-devel] [PATCH v2 0/3] qcow2: Do not mark inactive images corrupt, Max Reitz, 2018/06/06
- Re: [Qemu-devel] [PATCH v2 0/3] qcow2: Do not mark inactive images corrupt, John Snow, 2018/06/06
- Re: [Qemu-devel] [PATCH v2 0/3] qcow2: Do not mark inactive images corrupt, Max Reitz, 2018/06/09