On Wed, Jan 08, 2020 at 03:34:02PM +0000, Martin Wilck wrote:
Hi Peter,
On Wed, 2020-01-08 at 15:46 +0100, Peter Krempa wrote:
On Wed, Jan 08, 2020 at 13:34:14 +0000, Martin Wilck wrote:
The recent change in libvirt to pass storage arguments to qemu via "-blockdev", explicity passing backing file chain information rather than relying on qemu to figure it out, has bitten me quite painfully.
snip
In libvirt we already always record the image format when creating the overlay for many years now.
Unfortunately almost all tutorials about backing chains on the web just teach qemu-img usage. In my case I guess it's just an old habit.
I wonder if there's any scope for improving qemu-img here so that it can 'do the right thing', or at least issue a warning if the suer doesn't set a backing format. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|