Re: [Qemu-devel] [Qemu-block] [RFC PATCH for-2.9] block: Ignore guest dev permissions during incoming migration

2017-04-06 Thread Kashyap Chamarthy
On Thu, Apr 06, 2017 at 07:26:15PM +0200, Kashyap Chamarthy wrote: > On Tue, Apr 04, 2017 at 05:35:56PM +0200, Kevin Wolf wrote: > > Usually guest devices don't like other writers to the same image, so > > they use blk_set_perm() to prevent this from happening. In the migration > > phase before the

Re: [Qemu-devel] [Qemu-block] [RFC PATCH for-2.9] block: Ignore guest dev permissions during incoming migration

2017-04-06 Thread Kashyap Chamarthy
On Tue, Apr 04, 2017 at 05:35:56PM +0200, Kevin Wolf wrote: > Usually guest devices don't like other writers to the same image, so > they use blk_set_perm() to prevent this from happening. In the migration > phase before the VM is actually running, though, they don't have a > problem with writes to

Re: [Qemu-devel] [Qemu-block] [RFC PATCH for-2.9] block: Ignore guest dev permissions during incoming migration

2017-04-06 Thread Kashyap Chamarthy
On Tue, Apr 04, 2017 at 05:35:56PM +0200, Kevin Wolf wrote: > Usually guest devices don't like other writers to the same image, so > they use blk_set_perm() to prevent this from happening. In the migration > phase before the VM is actually running, though, they don't have a > problem with writes to