[libvirt] [PATCH 7/7] qemu: process: move disk presence checking to host setup function

Peter Krempa pkrempa at redhat.com
Thu Oct 5 07:48:20 UTC 2017


On Wed, Oct 04, 2017 at 18:21:24 +0200, Peter Krempa wrote:
> On Wed, Oct 04, 2017 at 12:09:04 -0400, John Ferlan wrote:
> > 
> > 
> > On 10/04/2017 07:42 AM, Peter Krempa wrote:
> > > Checking of disk presence accesses storage on the host so it should be
> > > done from the host setup function. Move the code to new function called
> > > qemuProcessPrepareHostStorage and remove qemuDomainCheckDiskPresence.
> > > ---
> > >  src/qemu/qemu_domain.c  | 41 -----------------------------------------
> > >  src/qemu/qemu_process.c | 46 ++++++++++++++++++++++++++++++++++++++++++----
> > >  2 files changed, 42 insertions(+), 45 deletions(-)
> > > 
> > 
> > [...]
> > 
> > > 
> > > +static int
> > > +qemuProcessPrepareHostStorage(virQEMUDriverPtr driver,
> > > +                              virDomainObjPtr vm,
> > > +                              unsigned int flags)
> > > +{
> > > +    size_t i;
> > > +    bool cold_boot = flags & VIR_QEMU_PROCESS_START_COLD;
> > > +
> > 
> > Consider my note from patch 5/7.  Previously this loop essentially
> > wasn't run for the pretend environment.  Now it will be, although since
> > @flags is passed it conceivably could be checked.  My make check passes
> > either way, so it may not matter, but figured to point it out for purely
> > testing purposes it seems.
> 
> It won't. Previously it was called from the domain prepare function
> which is called in qemuProcessCreatePretendCmd which is the only place
> that sets VIR_QEMU_PROCESS_START_PRETEND.
> 
> By moving the code to the "host prepare" function we gain that by
> default.

Forgot to finish thought: We get that by default, since the 'host
prepare' function is not called from qemuProcessCreatePretendCmd on
purpose. The host prepare function agregates stuff that depends on the
host state and thus is invalid to call in the test suite.

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