> -----Original Message----- > From: Kevin Wolf [mailto:kw...@redhat.com] > Sent: 08 January 2019 12:53 > To: Paul Durrant <paul.durr...@citrix.com> > Cc: Anthony Perard <anthony.per...@citrix.com>; qemu-de...@nongnu.org; > qemu-bl...@nongnu.org; xen-devel@lists.xenproject.org; Max Reitz > <mre...@redhat.com>; Stefano Stabellini <sstabell...@kernel.org> > Subject: Re: [PATCH v7 16/18] xen: automatically create XenBlockDevice-s > > Am 04.01.2019 um 17:40 hat Paul Durrant geschrieben: > > > -----Original Message----- > > > From: Anthony PERARD [mailto:anthony.per...@citrix.com] > > > Sent: 04 January 2019 16:31 > > > To: Paul Durrant <paul.durr...@citrix.com> > > > Cc: qemu-de...@nongnu.org; qemu-bl...@nongnu.org; xen- > > > de...@lists.xenproject.org; Kevin Wolf <kw...@redhat.com>; Max Reitz > > > <mre...@redhat.com>; Stefano Stabellini <sstabell...@kernel.org> > > > Subject: Re: [PATCH v7 16/18] xen: automatically create > XenBlockDevice-s > > > > > > Almost done, there is one thing left which I believe is an issue. > > > Whenever I attach a raw file to QEMU, it print: > > > qemu-system-i386: warning: Opening a block device as a file using > the > > > 'file' driver is deprecated > > > > Oh, I'd not noticed that... but then I only use raw files occasionally. > > Strictly speaking, this is not about raw (regular) files, but raw block > devices. 'file' is fine for actual regular files, but the protocol > driver for block devices is 'host_device'. > > > > raw files should use the "raw" driver, so we aren't done yet. > > > > Ok. Having a strictly 2-layer stack actually makes things simpler anyway > :-) > > Using 'raw' there will make the block layer auto-detect the right > protocol layer, so this works. If you want to avoid the second layer, > you'd have to figure out manually whether to use 'file' or > 'host_device'.
Thanks for the explanation. I'll give it a spin using a device... I've posted v8 but, given what you say, I'm still not sure I have it right. Paul > > Kevin _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
