Re: [PATCH] Resend: Add a --remove flag to allow virt-image to install new imageswhen an existing one with the same name is defined

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"Bryan M. Kearney <bkearney@xxxxxxxxxx>"@redhat.com wrote:
> # HG changeset patch
> # User "Bryan M. Kearney <bkearney@xxxxxxxxxx>"
> # Date 1215006150 14400
> # Node ID cada7b0a146fb7b4c187a9043ac2a33d2350268b
> # Parent  5d9cf6c2662494d21d84fbafbc0b7980096b1998
> Add a --remove flag to allow virt-image to install new images when an existing one with the same name is defined
> 
> diff -r 5d9cf6c26624 -r cada7b0a146f virt-image
> --- a/virt-image	Wed Jul 02 10:50:05 2008 +0100
> +++ b/virt-image	Wed Jul 02 09:42:30 2008 -0400
> @@ -142,7 +142,10 @@ def parse_args():
>                        help=_("The zero-based index of the boot record to use"))
>      parser.add_option("", "--force", action="store_true", dest="force",
>                        help=_("Do not prompt for input. Answers yes where applicable, terminates for all other prompts"),
> -                      default=False)
> +                      default=False)    
> +    parser.add_option("", "--replace",action="store_true", dest="replace",
> +                      help=_("Overwrite, or destroy, an existing image with the same name"),
> +                      default=False)                      
>  
>      (options,args) = parser.parse_args()
>      if len(args) < 1:
> @@ -211,7 +214,7 @@ def main():
>          try:
>              print _("\n\nCreating guest %s...") % guest.name
>  
> -            dom = guest.start_install(None, progresscb)
> +            dom = guest.start_install(None, progresscb, options.replace)
>              if dom is None:
>                  print _("Guest creation failed")
>                  sys.exit(1)
> diff -r 5d9cf6c26624 -r cada7b0a146f virtinst/Guest.py
> --- a/virtinst/Guest.py	Wed Jul 02 10:50:05 2008 +0100
> +++ b/virtinst/Guest.py	Wed Jul 02 09:42:30 2008 -0400
> @@ -914,7 +914,7 @@ class Guest(object):
>          "action": action }
>  
>  
> -    def start_install(self, consolecb = None, meter = None):
> +    def start_install(self, consolecb = None, meter = None,  removeOld = False):
>          """Do the startup of the guest installation."""
>          self.validate_parms()
>  
> @@ -924,7 +924,7 @@ class Guest(object):
>  
>          self._prepare_install(meter)
>          try:
> -            return self._do_install(consolecb, meter)
> +            return self._do_install(consolecb, meter, removeOld)
>          finally:
>              self._installer.cleanup()
>  
> @@ -932,10 +932,22 @@ class Guest(object):
>          self._install_disks = self.disks[:]
>          self._install_nics = self.nics[:]
>  
> -    def _do_install(self, consolecb, meter):
> +    def _do_install(self, consolecb, meter ,removeOld = False):
>          try:
> -            if self.conn.lookupByName(self.name) is not None:
> -                raise RuntimeError, _("Domain named %s already exists!") %(self.name,)
> +            vm = self.conn.lookupByName(self.name)
> +            if removeOld:
> +                if vm is not None:
> +                    if vm.ID() != -1:
> +                        logging.info("Destroying image %s" %(self.name))           
> +                        vm.destroy()
> +                    try:                      
> +                        logging.info("Removing old definition for image %s" %(self.name))
> +                        vm.undefine()
> +                    except libvirt.libvirtError, e:
> +                        raise RuntimeError, _("Could not remove old vm '%s': %s") %(self.name, str(e))                       
> +            else:
> +                if vm is not None:
> +                    raise RuntimeError, _("Domain named %s already exists!") %(self.name,)
>          except libvirt.libvirtError:
>              pass
>  

Hi, I responded to your initial posting yesterday, but forgot to cc you
so maybe you missed it. Most of it is still relevant:

https://www.redhat.com/archives/et-mgmt-tools/2008-July/msg00047.html

If you address that issue I think the patch will be fine to commit.

Thanks,
Cole

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