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[Qemu-devel] [PATCH 1/6] block: do not probe zero-sized disks
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH 1/6] block: do not probe zero-sized disks |
Date: |
Mon, 14 Jan 2013 11:01:56 +0100 |
From: Paolo Bonzini <address@hidden>
A blank CD or DVD is visible as a zero-sized disks. Probing such
disks will lead to an EIO and a failure to start the VM. Treating
them as raw is a better solution.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
block.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/block.c b/block.c
index 60873ea..14f8202 100644
--- a/block.c
+++ b/block.c
@@ -527,7 +527,7 @@ static int find_image_format(BlockDriverState *bs, const
char *filename,
int ret = 0;
/* Return the raw BlockDriver * to scsi-generic devices or empty drives */
- if (bs->sg || !bdrv_is_inserted(bs)) {
+ if (bs->sg || !bdrv_is_inserted(bs) || bdrv_getlength(bs) == 0) {
drv = bdrv_find_format("raw");
if (!drv) {
ret = -ENOENT;
--
1.7.6.5
- [Qemu-devel] [PULL 0/6] Block patches, Kevin Wolf, 2013/01/14
- [Qemu-devel] [PATCH 1/6] block: do not probe zero-sized disks,
Kevin Wolf <=
- [Qemu-devel] [PATCH 2/6] sheepdog: implement direct write semantics, Kevin Wolf, 2013/01/14
- [Qemu-devel] [PATCH 4/6] block: make qiov_is_aligned() public, Kevin Wolf, 2013/01/14
- [Qemu-devel] [PATCH 5/6] dataplane: extract virtio-blk read/write processing into do_rdwr_cmd(), Kevin Wolf, 2013/01/14
- [Qemu-devel] [PATCH 3/6] raw-posix: fix bdrv_aio_ioctl, Kevin Wolf, 2013/01/14
- [Qemu-devel] [PATCH 6/6] dataplane: handle misaligned virtio-blk requests, Kevin Wolf, 2013/01/14
- Re: [Qemu-devel] [PULL 0/6] Block patches, Anthony Liguori, 2013/01/20