qemu-img convert gets 403 from s3 presigned urls

[Ross Vandegrift]

Hi folks,

I'm trying to qemu-img convert a source that's hoted on s3, via a
presigned url.  When qemu-img hits it, s3 returns a 403.  But curl works
fine with the same url.

I didn't see any debugging or verbose output options in the man page.
Is there a way to get more info on the requests as they're made?

Assuming that awscli is installed and setup with credentials, the issue
looks like:

$ disk_url=$(aws s3 presign s3://bucket/path/to/image.qcow2)
$ qemu-img convert -f qcow2 -O raw "$disk_url" image.raw
qemu-img: Could not open 
'https://bucket.s3.us-east-2.amazonaws.com/path/to/image.qcow2?X-Amz-Algorithm=AWS4-HMAC-SHA256...[redacted]':
 CURL: Error opening file: The requested URL returned error: 403
$ curl -o image.qcow2 "$disk_url"
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  4 3322M    4  160M    0     0  13.5M      0  0:04:04  0:00:11  0:03:53 15.2M

Thanks for any pointers,
Ross

PS - please CC me, as I'm not subscribed.  Thanks!