Re: [libvirt] [PATCH 4/9] Implement the public API for vol zeroing
According to David Allan on 3/2/2010 3:13 PM:
+ * @flags: future flags, use 0 for now
+ *
+ * Ensure that future reads from the storage volume return zeroes.
+ *
+ * Returns 0 on success, or -1 on error
+ */
+int
+virStorageVolZeroOut(virStorageVolPtr vol,
+ unsigned int flags)
+{
+ virConnectPtr conn;
+ VIR_DEBUG("vol=%p, flags=%u", vol, flags);
To be future-proof, we should explicitly reject non-zero flags. That way,
if a newer client contacts an older server with a new flag supported only
by the client, the client doesn't get the mistaken impression that the
server can honor the flag.
--
Eric Blake eblake(a)redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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