Am 28.07.2011 15:10, schrieb Stefan Hajnoczi: > On Thu, Jul 28, 2011 at 11:23 AM, Kevin Wolf <kw...@redhat.com> wrote: >> Am 27.07.2011 16:51, schrieb Stefan Hajnoczi: >>> I'll think about this some more, there are a couple of solutions like >>> keeping only the file descriptor around, introducing a flush command >>> that makes sure the file is in a clean state, or changing QED to not >>> do this. >> >> Changing the format drivers doesn't really look like the right solution. >> >> Keeping the fd around looks okay, we can probably achieve this by >> introducing a bdrv_reopen function. It means that we may need to reopen >> the format layer, but it can't really fail. > > My concern is that this assumes a single file descriptor. For vmdk > there may be multiple split files. > > I'm almost starting to think bdrv_reopen() should be recursive down > the BlockDriverState tree.
Yes, VMDK would have to call bdrv_reopen() for each file that it uses. Kevin
