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Re: [libvirt] [PATCH v2 0/5]Atomic API to delete snapshot object

On 07/01/2013 07:51 PM, Daniel P. Berrange wrote:
On Mon, Jul 01, 2013 at 07:47:06PM +0800, Guannan Ren wrote:
v1: https://www.redhat.com/archives/libvir-list/2013-June/msg00573.html

         (name == NULL) means deleting current snapshot object
         Rebase work

Add a new snapshot API to delete snapshot object atomically

int virDomainSnapshotDeleteByName(virDomainPtr domain,
                                   const char *name,
                                   unsigned int flags);

The existing virDomainSnapshotDelete API accepts the snapshot
object being deleted as an argument that would be not API atomic.
You can already do:

   ss = virDomainSnapshotLookupByName(dom, name);
   virDomainSnapshotDelete(ss, flags);

      Yeah, right now, virsh tool uses this format to delete a snapshot.

and your patch is just enabling:

   virDomainSnapshotDeleteByName(dom, name, flags);

I really don't see any reason to add this new API, as it does not offer
any functionality that was not already available.

NACK unless there's better justification of why this is needed.


This patchset just try to follow the scenario of *LIstAll* APIs for atomic operation for SnapshotDelete.
      I don't know if this is necessary in practice. just in theory.

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