When virCommandSetSendBuffer() is used over a virCommand that is
(or will be) daemonized, then VIR_EXEC_ASYNC_IO the command must
have VIR_EXEC_ASYNC_IO flag set no later than at
virCommandRunAsync() phase so that the thread that's doing IO is
spawned and thus buffers can be sent to the process.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/util/vircommand.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/util/vircommand.c b/src/util/vircommand.c
index 41cf552d7b..5f22bd0ac3 100644
--- a/src/util/vircommand.c
+++ b/src/util/vircommand.c
@@ -1719,6 +1719,9 @@ virCommandFreeSendBuffers(virCommand *cmd)
* @buffer is always stolen regardless of the return value. This function
* doesn't raise a libvirt error, but rather propagates the error via virCommand.
* Thus callers don't need to take a special action if -1 is returned.
+ *
+ * When the @cmd is daemonized via virCommandDaemonize() remember to request
+ * asynchronous IO via virCommandDoAsyncIO().
*/
int
virCommandSetSendBuffer(virCommand *cmd,
--
2.34.1