When virCommandSetSendBuffer() is used over a virCommand that is (or will be) daemonized, then 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@xxxxxxxxxx> --- src/util/vircommand.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/util/vircommand.c b/src/util/vircommand.c index bbfbe19706..cdc74bc2fd 100644 --- a/src/util/vircommand.c +++ b/src/util/vircommand.c @@ -1693,6 +1693,9 @@ 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, -- 2.37.4
