The upstream has 3 min as the timeout (60 retries at 3-seconds
interval). It should work if an image is in a raw format to leverage
Ceph's copy-on-write or an image is small enough to be copied quickly.
However, there are some cases exeeding the 3 min deadline such as a big
enough image with Qcow2 or other formats like Windows images, or storage
backend doesn't have copy-on-write from Glance.
Let's bump the deadline to 15 min (300 retries at 3-seconds interval) to
cover most of the cases out of the box, and let operators tune it
further by exposing those options.
Co-authored-by: Mark Maglana <mark.maglana@canonical.com>
Closes-Bug: 1758607
Change-Id: I6f6da8e90c6bbcd031ee183ae86d88eccd392230
2283f12edd