The 256 characters limit for Images doesn't seem quite accurate. If you try to set up a long name with special characters (less than 256 characters, but more than 256 bytes?) it fails.
A user reported:
1. Create a vm
2. Create a snapshot from the vm and the name of the snapshot should be more than 256 bytes. For example: を引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様はを引き続きご使用になるお客様は
3. Horizon fails with a generic error.
But actually it is the same with e.g. just creating a new image (The error returned is the generic: "Unable to create new image. ")
We see this in the logs:
[Tue Jan 20 16:40:45.594430 2015] [:error] [pid 17230] Recoverable error: <html>
[Tue Jan 20 16:40:45.594454 2015] [:error] [pid 17230] <head>
[Tue Jan 20 16:40:45.594458 2015] [:error] [pid 17230] <title>400 Bad Request</title>
[Tue Jan 20 16:40:45.594460 2015] [:error] [pid 17230] </head>
[Tue Jan 20 16:40:45.594462 2015] [:error] [pid 17230] <body>
[Tue Jan 20 16:40:45.594465 2015] [:error] [pid 17230] <h1>400 Bad Request</h1>
[Tue Jan 20 16:40:45.594467 2015] [:error] [pid 17230] Image name too long: 405<br /><br />
[Tue Jan 20 16:40:45.594469 2015] [:error] [pid 17230]
[Tue Jan 20 16:40:45.594472 2015] [:error] [pid 17230] </body>
[Tue Jan 20 16:40:45.594474 2015] [:error] [pid 17230] </html> (HTTP 400)
So Glance does return a more meaningful error, that we should try to present to the user.
Fix proposed to branch: master
Review: https:/