Hi Yang/Senthil,

I have several questions for the below bug:

1. Before lock/unlock compute-0, is there any VM running on compute-0? Is there any network configured on compute-0?

2. Could you please help check the file (filename starts with "tap" or "qr") status in the below directory:

/sys/devices/virtual/net/

/sys/class/net/

The following log in ovs-vswitchd in compute-1 shows those file are in wrong status which may cause ovs-vswitchd wrong:

2019-08-05T08:40:03.921Z|00881|dpif_netdev|ERR|error receiving data from tap588a7711-e2: File descriptor in bad state

2019-08-05T08:40:04.006Z|00882|dpif_netdev|ERR|error receiving data from tap588a7711-e2: File descriptor in bad state

2019-08-05T08:40:04.020Z|00888|dpif_netdev|ERR|error receiving data from tap588a7711-e2: File descriptor in bad state

2019-08-05T08:40:04.167Z|00889|dpif_netdev|ERR|error receiving data from tap6c26786b-f7: File descriptor in bad state

2019-08-05T08:40:04.167Z|00890|dpif_netdev|ERR|error receiving data from tap588a7711-e2: File descriptor in bad state

Best Regards,

Xu, Chenjie