On Mon 14 Sep 2015 10:45:55 AM CEST, Kevin Wolf wrote: >> >>> So why do we need the new flag? Because "backing: ''" is ugly? >> >> Anyway, was this ever implemented? It seems that passing a string to >> the 'backing' parameter is only specified in the JSON schema, but no >> one actually uses that. >> > I have a patch that actually allows passing a node-name reference as a > string here. v1 was posted a few months ago; it just turned out that I > need to kill bdrv_swap() before that can work because bdrv_swap() > doesn't work with nodes that have a BlockBackend attached.
But there was no way to open a BDS without having a BlockBackend attached, or was there? It's possible with Max's "BlockBackend and media" series, that's why I am using it. Berto
