Re: [PATCH 2/2] conf: Reuse virDomainDefCheckDuplicateDiskWWN to check disk serial too

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On Tue, Sep 29, 2015 at 18:50:48 +0200, Jiri Denemark wrote:
> On Tue, Sep 29, 2015 at 18:38:05 +0200, Peter Krempa wrote:
> > Rename the function to virDomainDefCheckDuplicateDiskInfo and make it
> > check disk serials too.
> > 
> > Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1245013
> > ---
> >  src/conf/domain_conf.c   | 15 ++++++++++++++-
> >  src/conf/domain_conf.h   |  2 +-
> >  src/libvirt_private.syms |  2 +-
> >  src/qemu/qemu_process.c  |  2 +-
> >  4 files changed, 17 insertions(+), 4 deletions(-)
> > 
> > diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> > index 393ece7..e9d61db 100644
> > --- a/src/conf/domain_conf.c
> > +++ b/src/conf/domain_conf.c
> > @@ -24451,7 +24451,7 @@ virDomainDefNeedsPlacementAdvice(virDomainDefPtr def)
> > 
> > 
> >  int
> > -virDomainDefCheckDuplicateDiskWWN(virDomainDefPtr def)
> > +virDomainDefCheckDuplicateDiskInfo(virDomainDefPtr def)
> >  {
> >      size_t i;
> >      size_t j;
> > @@ -24469,6 +24469,19 @@ virDomainDefCheckDuplicateDiskWWN(virDomainDefPtr def)
> >                  }
> >              }
> >          }
> > +
> > +        if (def->disks[i]->serial) {
> > +            for (j = i + 1; j < def->ndisks; j++) {
> > +                if (STREQ_NULLABLE(def->disks[i]->serial,
> > +                                   def->disks[j]->serial)) {
> > +                    virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> > +                                   _("Disks '%s' and '%s' have identical serial"),
> > +                                   def->disks[i]->dst,
> > +                                   def->disks[j]->dst);
> > +                    return -1;
> > +                }
> > +            }
> > +        }
> 
> Any reason for going through all disks twice? Wouldn't it be better to
> go through them once and check for both serial and wwn within a single
> loop? :-)

Erm. I'm going to blame me writing suboptimal (read: crappy) code on
hunger.

Peter

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