qtest/ahci: add flush migrate test

Use blkdebug to inject an error on first flush, then attempt to flush
on the first guest. When the error halts the VM, migrate to the
second VM, and attempt to resume the command.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1430417242-11859-8-git-send-email-jsnow@redhat.com

1 files changed, 51 insertions, 1 deletions

diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index 6513330296..f6de355fb7 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -1071,7 +1071,7 @@ static void test_flush_retry(void)
                                 debug_path,
                                 tmp_path);
 
-    /* Issue Flush Command */
+    /* Issue Flush Command and wait for error */
     port = ahci_port_select(ahci);
     ahci_port_clear(ahci, port);
     cmd = ahci_command_create(CMD_FLUSH_CACHE);
@@ -1154,6 +1154,55 @@ static void test_migrate_dma(void)
     g_free(tx);
 }
 
+/**
+ * Migration test: Try to flush, migrate, then resume.
+ */
+static void test_flush_migrate(void)
+{
+    AHCIQState *src, *dst;
+    AHCICommand *cmd;
+    uint8_t px;
+    const char *s;
+    const char *uri = "tcp:127.0.0.1:1234";
+
+    prepare_blkdebug_script(debug_path, "flush_to_disk");
+
+    src = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
+                               "cache=writeback,rerror=stop,werror=stop "
+                               "-M q35 "
+                               "-device ide-hd,drive=drive0 ",
+                               debug_path, tmp_path);
+    dst = ahci_boot("-drive file=%s,if=none,id=drive0,"
+                    "cache=writeback,rerror=stop,werror=stop "
+                    "-M q35 "
+                    "-device ide-hd,drive=drive0 "
+                    "-incoming %s", tmp_path, uri);
+
+    set_context(src->parent);
+
+    /* Issue Flush Command */
+    px = ahci_port_select(src);
+    ahci_port_clear(src, px);
+    cmd = ahci_command_create(CMD_FLUSH_CACHE);
+    ahci_command_commit(src, cmd, px);
+    ahci_command_issue_async(src, cmd);
+    qmp_eventwait("STOP");
+
+    /* Migrate over */
+    ahci_migrate(src, dst, uri);
+
+    /* Complete the command */
+    s = "{'execute':'cont' }";
+    qmp_async(s);
+    qmp_eventwait("RESUME");
+    ahci_command_wait(dst, cmd);
+    ahci_command_verify(dst, cmd);
+
+    ahci_command_free(cmd);
+    ahci_shutdown(src);
+    ahci_shutdown(dst);
+}
+
 /******************************************************************************/
 /* AHCI I/O Test Matrix Definitions                                           */
 
@@ -1402,6 +1451,7 @@ int main(int argc, char **argv)
 
     qtest_add_func("/ahci/flush/simple", test_flush);
     qtest_add_func("/ahci/flush/retry", test_flush_retry);
+    qtest_add_func("/ahci/flush/migrate", test_flush_migrate);
 
     qtest_add_func("/ahci/migrate/sanity", test_migrate_sanity);
     qtest_add_func("/ahci/migrate/dma", test_migrate_dma);