Re: [PATCH v5 2/4] tests/test-replication.c: Add test for ignoring requests after failover

[Lukas Straub <lukasstraub2@web.de>]

On Thu, 26 Sep 2019 17:40:03 +0000
"Zhang, Chen" <chen.zhang@intel.com> wrote:

> > -----Original Message-----
> > From: Lukas Straub <lukasstraub2@web.de>
> > Sent: Monday, September 16, 2019 3:20 AM
> > To: qemu-devel <qemu-devel@nongnu.org>
> > Cc: Zhang, Chen <chen.zhang@intel.com>; Jason Wang
> > <jasowang@redhat.com>; Wen Congyang <wencongyang2@huawei.com>;
> > Xie Changlong <xiechanglong.d@gmail.com>; kwolf@redhat.com;
> > mreitz@redhat.com
> > Subject: [PATCH v5 2/4] tests/test-replication.c: Add test for ignoring
> > requests after failover
> >
> > This simulates the case that happens when we resume COLO after failover.
> >
>
> It looks change the title to "Add test for secondary node continuous backup" is better.

Did you mean "continuous replication"? Would "Add test for secondary node continuing replication" be Ok?

> > Signed-off-by: Lukas Straub <lukasstraub2@web.de>
> > ---
> >  tests/test-replication.c | 52
> > ++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 52 insertions(+)
> >
> > diff --git a/tests/test-replication.c b/tests/test-replication.c index
> > f085d1993a..5addfc2227 100644
> > --- a/tests/test-replication.c
> > +++ b/tests/test-replication.c
> > @@ -489,6 +489,56 @@ static void test_secondary_stop(void)
> >      teardown_secondary();
> >  }
> >
> > +static void test_secondary_failover_then_ignore_requests(void)
>
> Same as title, I think change to "test_secondary_continuous_backup" is more clear.
>
> Thanks
> Zhang Chen
>
> > +{
> > +    BlockBackend *top_blk, *local_blk;
> > +    Error *local_err = NULL;
> > +
> > +    top_blk = start_secondary();
> > +    replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
> > +    g_assert(!local_err);
> > +
> > +    /* write 0x22 to s_local_disk (IMG_SIZE / 2, IMG_SIZE) */
> > +    local_blk = blk_by_name(S_LOCAL_DISK_ID);
> > +    test_blk_write(local_blk, 0x22, IMG_SIZE / 2, IMG_SIZE / 2, false);
> > +
> > +    /* replication will backup s_local_disk to s_hidden_disk */
> > +    test_blk_read(top_blk, 0x11, IMG_SIZE / 2,
> > +                  IMG_SIZE / 2, 0, IMG_SIZE, false);
> > +
> > +    /* write 0x33 to s_active_disk (0, IMG_SIZE / 2) */
> > +    test_blk_write(top_blk, 0x33, 0, IMG_SIZE / 2, false);
> > +
> > +    /* do failover (active commit) */
> > +    replication_stop_all(true, &local_err);
> > +    g_assert(!local_err);
> > +
> > +    /* it should ignore all requests from now on */
> > +
> > +    /* start after failover */
> > +    replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
> > +    g_assert(!local_err);
> > +
> > +    /* checkpoint */
> > +    replication_do_checkpoint_all(&local_err);
> > +    g_assert(!local_err);
> > +
> > +    /* stop */
> > +    replication_stop_all(true, &local_err);
> > +    g_assert(!local_err);
> > +
> > +    /* read from s_local_disk (0, IMG_SIZE / 2) */
> > +    test_blk_read(top_blk, 0x33, 0, IMG_SIZE / 2,
> > +                  0, IMG_SIZE / 2, false);
> > +
> > +
> > +    /* read from s_local_disk (IMG_SIZE / 2, IMG_SIZE) */
> > +    test_blk_read(top_blk, 0x22, IMG_SIZE / 2,
> > +                  IMG_SIZE / 2, 0, IMG_SIZE, false);
> > +
> > +    teardown_secondary();
> > +}
> > +
> >  static void test_secondary_do_checkpoint(void)
> >  {
> >      BlockBackend *top_blk, *local_blk;
> > @@ -584,6 +634,8 @@ int main(int argc, char **argv)
> >      g_test_add_func("/replication/secondary/write", test_secondary_write);
> >      g_test_add_func("/replication/secondary/start", test_secondary_start);
> >      g_test_add_func("/replication/secondary/stop",  test_secondary_stop);
> > +
> > g_test_add_func("/replication/secondary/failover_then_ignore_requests",
> > +                    test_secondary_failover_then_ignore_requests);
> >      g_test_add_func("/replication/secondary/do_checkpoint",
> >                      test_secondary_do_checkpoint);
> >      g_test_add_func("/replication/secondary/get_error_all",
> > --
> > 2.20.1
>