On Fri, Dec 09, 2016 at 03:38:09PM +0100, Michal Privoznik wrote:
On 07.12.2016 16:31, John Ferlan wrote:
Commit id 'a9fd30e63' added a '<nocow/>' field to be parsed, but
didn't Format the field on output. This patch fixes that and adds
the vol-qcow2-nocow test to/for storagevolxml2xml

Signed-off-by: John Ferlan <jfer...@redhat.com>
---
 src/conf/storage_conf.c                        | 2 ++
 tests/storagevolxml2xmlout/vol-qcow2-nocow.xml | 1 +
 tests/storagevolxml2xmltest.c                  | 1 +
 3 files changed, 4 insertions(+)

diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index 7e7bb72..dc7cc25 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -1590,6 +1590,8 @@ virStorageVolTargetDefFormat(virStorageVolOptionsPtr 
options,
             return -1;

     virBufferEscapeString(buf, "<compat>%s</compat>\n", def->compat);
+    if (def->nocow)
+        virBufferAddLit(buf, "<nocow/>\n");


I wonder whether we should detect this flag over a volume and set it so
that vol-dumpxml reports the flag even after libvirtd restart.


Well, I don't think we output things we cannot detect (like
"prealloc_metadata") which we accept on input.  So if we output it, we
need to be able to detect it.  If we only accept it on input, then we
should not output it (because we cannot guarantee reproducibility after
daemon restart).

Martin

Michal

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