[CRIU] I can't dump mysqld

[Yohei Kamitsukasa]

On 7/28/16 15:17, Andrew Vagin wrote:

> On Thu, Jul 28, 2016 at 09:58:39AM +0900, Yohei Kamitsukasa wrote:
>> rt_sigaction(SIGCHLD, {0x45b940, [CHLD], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f6c58d163d0}, NULL, 8) = 0
>> ptrace(PTRACE_SETSIGMASK, 8367, 0x8, 0x7ffe72948b30) = 0
>> ptrace(PTRACE_SETREGSET, 8367, NT_PRSTATUS, [{0x7ffe72948b90, 216}]) = 0
>> ptrace(PTRACE_CONT, 8367, NULL, SIG_0)  = 0
>> accept(6,
>
> Could you check that all processes live in the same network namespaces?
>
> "readlink /proc/pid/ns/net" should return the same value for all
> processes.
Thank you for teaching how to check to me:)
I checked the network namespaces of mysqld's processes and they were in 
same network namespace all. (A process of CRIU dumping was in the 
network namespace.)

In addition, I realized that a version of MySQL might be 5.6 in this 
question 
(https://lists.openvz.org/pipermail/criu/2014-April/013424.html) but I 
had used 5.7.
Then I tried to use MySQL(5.6) and CRIU(2.0) but the result was same...