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Re: [libvirt] [PATCH v2 02/12] qemu: Introduce qemuDomainSecretPrepare and Destroy



On Mon, May 02, 2016 at 10:08:10AM -0400, John Ferlan wrote:
> 
> 
> On 05/02/2016 09:52 AM, Ján Tomko wrote:
> > On Mon, May 02, 2016 at 08:48:02AM -0400, John Ferlan wrote:
> >> On 05/02/2016 07:38 AM, Ján Tomko wrote:
> >>> On Sat, Apr 16, 2016 at 10:17:35AM -0400, John Ferlan wrote:
> >>>> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> >>>> index 81d86c2..c9f43fa 100644
> >>>> --- a/src/qemu/qemu_process.c
> >>>> +++ b/src/qemu/qemu_process.c
> >>>> @@ -5640,6 +5640,9 @@ qemuProcessStart(virConnectPtr conn,
> >>>>      if (qemuProcessPrepareHost(driver, vm, !!incoming) < 0)
> >>>>          goto stop;
> >>>>  
> >>>> +    if (qemuDomainSecretPrepare(conn, vm) < 0)
> >>>> +        goto cleanup;
> >>>> +
> >>>
> >>> The call fits better in qemuProcessPrepareDomain,
> >>> that way it will be called even for incoming migration.
> >>>
> >>
> >> Understood; however, PrepareDomain doesn't have everything that will be
> >> needed.  The qemuProcessPrepareHost must run first in order to create
> >> "priv->libDir" in order to write the domain master key secret that will
> >> be used in "future patches" (11/12 of this series) in order to generate
> >> an Initialization Vector secret.
> >>
> >> I think it's possible to move the call into qemuProcessPrepareHost if
> >> you think that works better/fine.  The qemuProcessCreatePretendCmd
> >> already calls qemuDomainSecretPrepare, so that "should" cover the
> >> testing scenario...
> > 
> > Another possibility could be splitting qemuDomainMasterKeyCreate
> > into key creation (which does prepare the domain) and writing/labeling
> > (which prepares the host environment).
> 
> Seems a bit of overkill to me to keep split that up. If that's something
> you feel strongly about I can review whatever you send.

Still less overkill than copying and pasting it into three different
places.

Jan


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