On 7/19/24 07:04, Ales Musil wrote:
> 
> 
> On Thu, Jul 18, 2024 at 9:40 PM Ilya Maximets <[email protected] 
> <mailto:[email protected]>> wrote:
> 
>     This tests constructs a very large operation that frequently takes more
>     than a second on busy CI systems.  As a result ovn-nbctl emits a warning
>     for a long poll interval and fails the test.
> 
>     Fix that by splitting a single large command into a series of smaller
>     ones - 100 switches at a time.  This makes the test a bit slower, but
>     much more reliable.
> 
>     Fixes: 7e99500e60bf ("northd: Add support for disabling vxlan mode.")
>     Signed-off-by: Ilya Maximets <[email protected] 
> <mailto:[email protected]>>
>     ---
> 
> 
> Hi Ilya,
> 
> thank you for addressing this, however there is one patch already pending
> addressing the same issue 
> https://patchwork.ozlabs.org/project/ovn/patch/[email protected]/
>  .

Ah, thanks for the pointer!  I did look through patchwork before
sending, but somehow missed this one.

OTOH, I'm not a big fan of hiding the executed commands from the
testsuite log, which will happen if we replace check with eval.
Also, constructing command lines that long is generally not a good
idea since the maximum command line length is system-dependent
and can be as low as 4096 characters.

Best regards, Ilya Maximets.

>  
> 
>      tests/ovn-northd.at <http://ovn-northd.at> | 8 ++++++--
>      1 file changed, 6 insertions(+), 2 deletions(-)
> 
>     diff --git a/tests/ovn-northd.at <http://ovn-northd.at> 
> b/tests/ovn-northd.at <http://ovn-northd.at>
>     index a389d1988..d7551f69a 100644
>     --- a/tests/ovn-northd.at <http://ovn-northd.at>
>     +++ b/tests/ovn-northd.at <http://ovn-northd.at>
>     @@ -2882,12 +2882,16 @@ ovn-sbctl \
>          --id=@e create encap chassis_name=hv1 ip="192.168.0.1" type="vxlan" \
>          -- --id=@c create chassis name=hv1 encaps=@e
> 
>     -cmd="ovn-nbctl --wait=sb"
>     +cmd=""
>      for i in {1..4097..1}; do
>          cmd="${cmd} -- ls-add lsw-${i}"
>     +    if test $(($i % 100)) -eq 0; then
>     +        check ovn-nbctl $cmd
>     +        cmd=""
>     +    fi
>      done
> 
>     -check $cmd
>     +check ovn-nbctl --wait=sb $cmd
> 
>      check_row_count nb:Logical_Switch 4097
>      wait_row_count sb:Datapath_Binding 4095
>     -- 
>     2.45.2
> 
> 
> Thanks,
> Ales

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