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[Qemu-devel] [PATCH] block: do not probe zero-sized disks
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH] block: do not probe zero-sized disks |
Date: |
Thu, 10 Jan 2013 15:39:27 +0100 |
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>
---
block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block.c b/block.c
index c05875f..b9da10e 100644
--- a/block.c
+++ b/block.c
@@ -532,7 +532,7 @@ static int find_image_format(const char *filename,
BlockDriver **pdrv)
}
/* 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) {
bdrv_delete(bs);
drv = bdrv_find_format("raw");
if (!drv) {
--
1.8.1
- [Qemu-devel] [PATCH] block: do not probe zero-sized disks,
Paolo Bonzini <=