On Thu, Jun 05, 2014 at 01:12:46PM +0800, Amos Kong wrote: > On Wed, Jun 04, 2014 at 05:35:06PM +0200, Stefan Hajnoczi wrote: > > On Tue, May 27, 2014 at 03:14:41PM +0800, Amos Kong wrote: > > > This patch adds a new subtest, it hotplugs 29 * 8 = 232 virtio-blk > > > devices to guest, and try to hot-unplug them. > > > > > > Note: the hot-unplug can't work without cooperation of guest OS. > > > > > > Signed-off-by: Amos Kong <ak...@redhat.com> > > > --- > > > tests/virtio-blk-test.c | 55 > > > +++++++++++++++++++++++++++++++++++++++++++++++++ > > > 1 file changed, 55 insertions(+) > > > > > > diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c > > > index 0fdec01..54d1272 100644 > > > --- a/tests/virtio-blk-test.c > > > +++ b/tests/virtio-blk-test.c > > > @@ -7,11 +7,65 @@ > > > * See the COPYING file in the top-level directory. > > > */ > > > > > > +#include <stdio.h> > > > #include <glib.h> > > > #include <string.h> > > > #include "libqtest.h" > > > #include "qemu/osdep.h" > > > > > > +static void exec_hmp_cmd(const char *cmd, const char *expected_ret) > > > > This is a generic function, should it be moved to libqtest.c? > > OK > > > > > > +{ > > > + QDict *response; > > > + const char *response_return; > > > + > > > + response = qmp("{\"execute\": \"human-monitor-command\"," > > > + " \"arguments\": {" > > > + " \"command-line\": \"%s\"" > > > + "}}", cmd); > > > My only worry if we make this function generic is that cmd isn't escaped > > so callers need to be careful. > > Maybe something like g_strescape() should be used: > > > > https://developer.gnome.org/glib/2.37/glib-String-Utility-Functions.html#g-strescape > > > > > + g_assert(response); > > > + response_return = qdict_get_try_str(response, "return"); > > > + g_assert(response_return); > > > + g_assert(strcmp(response_return, expected_ret) == 0); > > > > Please use g_assert_cmpstr() so the error message will be pretty-printed > > with the values of response_return and expected_ret: > > https://developer.gnome.org/glib/stable/glib-Testing.html#g-assert-cmpstr > > OK > > > > + QDECREF(response); > > > +} > > > > > +static void test_blk_hotplug(void) > > > +{ > > > + char addr[6]; > > > + char cmd[100]; > > > + int i, j; > > > + > > > + /* Start with no network/block device, slots 3~0x1f are free */ > > > + qtest_start("-net none"); > > > + > > > + for (i = 3; i <= 0x1f; i++) { > > > + for (j = 7; j >= 0; j--) { > > > + sprintf(addr, "%x.%x", i, j); > > > + sprintf(cmd, "drive_add 0x%s > > > if=none,file=/dev/null,id=drv-%s", > > > + addr, addr); > > > > Does the address matter with if=none? I think you can just do > > "drive_add 0 if=none,...". > > drive_add [[<domain>:]<bus>:]<slot> > > multiple function is enabled, slot parameter is needed.
pci addr is assigned in device_add command, and it contains drive's id. I tried to just use "drive_add 0 if=none,...", it also works. -- Amos.