Test migrating a halted DMA transaction.
Resume, then test data integrity.
Signed-off-by: John Snow <js...@redhat.com>
Reviewed-by: Kevin Wolf <kw...@redhat.com>
Message-id: 1430417242-11859-10-git-send-email-js...@redhat.com
---
tests/ahci-test.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 74 insertions(+), 1 deletion(-)
diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index aa0db92..020acdd 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -1212,6 +1212,78 @@ static void test_halted_dma(void)
}
/**
+ * DMA Error Migration Test
+ *
+ * Simulate an error on first write, Try to write a pattern,
+ * Confirm the VM has stopped, migrate, resume the VM,
+ * verify command has completed, then read back the data and verify.
+ */
+static void test_migrate_halted_dma(void)
+{
+ AHCIQState *src, *dst;
+ uint8_t port;
+ size_t bufsize = 4096;
+ unsigned char *tx = g_malloc(bufsize);
+ unsigned char *rx = g_malloc0(bufsize);
+ unsigned i;
+ uint64_t ptr;
+ AHCICommand *cmd;
+ const char *uri = "tcp:127.0.0.1:1234";
+
+ prepare_blkdebug_script(debug_path, "write_aio");
+
+ src = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
+ "format=qcow2,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,"
+ "format=qcow2,cache=writeback,"
+ "rerror=stop,werror=stop "
+ "-M q35 "
+ "-device ide-hd,drive=drive0 "
+ "-incoming %s",
+ tmp_path, uri);
+
+ set_context(src->parent);
+
+ /* Initialize and prepare */
+ port = ahci_port_select(src);
+ ahci_port_clear(src, port);
+
+ for (i = 0; i < bufsize; i++) {
+ tx[i] = (bufsize - i);
+ }
+
+ /* create DMA source buffer and write pattern */
+ ptr = ahci_alloc(src, bufsize);
+ g_assert(ptr);
+ memwrite(ptr, tx, bufsize);
+
+ /* Write, trigger the VM to stop, migrate, then resume. */
+ cmd = ahci_guest_io_halt(src, port, CMD_WRITE_DMA,
+ ptr, bufsize, 0);
+ ahci_migrate(src, dst, uri);
+ ahci_guest_io_resume(dst, cmd);
+ ahci_free(dst, ptr);
+
+ /* Read back */
+ ahci_io(dst, port, CMD_READ_DMA, rx, bufsize, 0);
+
+ /* Verify TX and RX are identical */
+ g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
+
+ /* Cleanup and go home. */
+ ahci_shutdown(src);
+ ahci_shutdown(dst);
+ g_free(rx);
+ g_free(tx);
+}
+
+/**
* Migration test: Try to flush, migrate, then resume.
*/
static void test_flush_migrate(void)
@@ -1511,8 +1583,9 @@ int main(int argc, char **argv)
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);
+ qtest_add_func("/ahci/migrate/dma/simple", test_migrate_dma);
qtest_add_func("/ahci/io/dma/lba28/retry", test_halted_dma);
+ qtest_add_func("/ahci/migrate/dma/halted", test_migrate_halted_dma);
ret = g_test_run();
--
2.1.0
