Re: [ovs-dev] Hypervisor down during upgrade OVS 2.10.x to 2.10.y

2019-09-06 Thread Han Zhou
Good finding. So it is a known kernel bug and it won't get fixed in that kernel version. :( >From OVS point of view, the problem is, if such bug exists in kernel, it prevents ovs-vswitchd to be killed (even by SIGKILL) because the process is in system call which got blocked because of the kernel bu

Re: [ovs-dev] Hypervisor down during upgrade OVS 2.10.x to 2.10.y

2019-09-06 Thread aginwala
Hi: Adding correct ovs-discuss ML. I did get a chance to take a look on it a bit. I think this is the bug in 4.4.0-104-generic kernel on ubuntu 16.04 as its being discussed on ubuntu forum https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711407 where it can be hit all of a sudden as per the

Re: [ovs-dev] Hypervisor down during upgrade OVS 2.10.x to 2.10.y

2019-08-28 Thread Jin, Liang via dev
Hi, We upgrade the OVS recently from one version 2.10 to another version 2.10. on some HV upgrade, the HV is down when running force reload kernel. In the ovs-ctl log, kill ovs-vswitch is failed, but the script is still going to reload the modules. ``` ovsdb-server is running with pid 2431 ovs-v

Re: [ovs-dev] Hypervisor down during upgrade OVS 2.10.x to 2.10.y

2019-08-28 Thread Jin, Liang via dev
Hi, We upgrade the OVS recently from one version 2.10 to another version 2.10. on some HV upgrade, the HV is down when running force reload kernel. In the ovs-ctl log, kill ovs-vswitch is failed, but the script is still going to reload the modules. ``` ovsdb-server is running with pid 2431 ovs

[ovs-dev] Hypervisor down during upgrade OVS 2.10.x to 2.10.y

2019-08-28 Thread Jin, Liang via dev
Hi, We upgrade the OVS recently from one version 2.10 to another version 2.10. on some HV upgrade, the HV is down when running force reload kernel. In the ovs-ctl log, kill ovs-vswitch is failed, but the script is still going to reload the modules. ``` ovsdb-server is running with pid 2431 ovs-v

Re: [ovs-dev] Hypervisor down during upgrade OVS 2.10.x to 2.10.y

2019-08-28 Thread Jin, Liang via dev
From: "Jin, Liang" Date: Wednesday, August 28, 2019 at 3:58 AM To: "ovs-dev@openvswitch.org" Cc: "Zhou, Han" , "Murthy, Sudheendra(sumurthy)" Subject: Hypervisor down during upgrade OVS 2.10.x to 2.10.y Hi, We upgrade the OVS recently from one version 2.10 to another version 2.10. on some