qtest/ahci: add migrate halted dma test
Test migrating a halted DMA transaction. Resume, then test data integrity. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1430417242-11859-10-git-send-email-jsnow@redhat.com
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@ -1213,6 +1213,78 @@ static void test_halted_dma(void)
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g_free(tx);
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}
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/**
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* DMA Error Migration Test
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*
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* Simulate an error on first write, Try to write a pattern,
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* Confirm the VM has stopped, migrate, resume the VM,
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* verify command has completed, then read back the data and verify.
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*/
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static void test_migrate_halted_dma(void)
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{
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AHCIQState *src, *dst;
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uint8_t port;
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size_t bufsize = 4096;
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unsigned char *tx = g_malloc(bufsize);
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unsigned char *rx = g_malloc0(bufsize);
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unsigned i;
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uint64_t ptr;
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AHCICommand *cmd;
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const char *uri = "tcp:127.0.0.1:1234";
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prepare_blkdebug_script(debug_path, "write_aio");
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src = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
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"format=qcow2,cache=writeback,"
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"rerror=stop,werror=stop "
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"-M q35 "
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"-device ide-hd,drive=drive0 ",
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debug_path,
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tmp_path);
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dst = ahci_boot("-drive file=%s,if=none,id=drive0,"
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"format=qcow2,cache=writeback,"
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"rerror=stop,werror=stop "
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"-M q35 "
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"-device ide-hd,drive=drive0 "
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"-incoming %s",
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tmp_path, uri);
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set_context(src->parent);
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/* Initialize and prepare */
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port = ahci_port_select(src);
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ahci_port_clear(src, port);
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for (i = 0; i < bufsize; i++) {
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tx[i] = (bufsize - i);
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}
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/* create DMA source buffer and write pattern */
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ptr = ahci_alloc(src, bufsize);
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g_assert(ptr);
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memwrite(ptr, tx, bufsize);
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/* Write, trigger the VM to stop, migrate, then resume. */
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cmd = ahci_guest_io_halt(src, port, CMD_WRITE_DMA,
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ptr, bufsize, 0);
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ahci_migrate(src, dst, uri);
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ahci_guest_io_resume(dst, cmd);
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ahci_free(dst, ptr);
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/* Read back */
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ahci_io(dst, port, CMD_READ_DMA, rx, bufsize, 0);
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/* Verify TX and RX are identical */
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g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
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/* Cleanup and go home. */
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ahci_shutdown(src);
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ahci_shutdown(dst);
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g_free(rx);
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g_free(tx);
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}
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/**
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* Migration test: Try to flush, migrate, then resume.
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*/
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@ -1513,8 +1585,9 @@ int main(int argc, char **argv)
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qtest_add_func("/ahci/flush/migrate", test_flush_migrate);
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qtest_add_func("/ahci/migrate/sanity", test_migrate_sanity);
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qtest_add_func("/ahci/migrate/dma", test_migrate_dma);
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qtest_add_func("/ahci/migrate/dma/simple", test_migrate_dma);
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qtest_add_func("/ahci/io/dma/lba28/retry", test_halted_dma);
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qtest_add_func("/ahci/migrate/dma/halted", test_migrate_halted_dma);
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ret = g_test_run();
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