[CRIU] Issues dumping MySQL process

[Pavel Emelyanov]

On 04/01/2014 04:11 PM, Deyan Doychev wrote:
> Hi!
> 
> When I try dumping a mysqld process (along with the mysqld_safe one) I
> get the following errors:
> 
> Error (proc_parse.c:419): Can't handle non-regular mapping on 3487's map
> 140731902361600

Damn, this is vma start and should be %x :)

> Error (cr-dump.c:1426): Collect mappings (pid: 3487) failed with -1
> Error (cr-dump.c:1855): Dumping FAILED.
> 
> As far as I can see these are caused by these mappings:
> 
> 7ffeb7588000-7ffeb758d000 rw-s 00000000 00:09 2016904                   
> /[aio] (deleted)
> 7ffeb758d000-7ffeb7592000 rw-s 00000000 00:09 2016903                   
> /[aio] (deleted)
> 7ffeb7592000-7ffeb7597000 rw-s 00000000 00:09 2016902                   
> /[aio] (deleted)

Wow... These are mappings created by sys_io_setup(). We have never met
any application using this before, looks like your mysql is brand new :)

> Has anyone tried to dump a mysql daemon and if so how do you deal with
> this problem?

I did dumped MySQL daemon from Fedora-19, but haven't met this.

Thanks,
Pavel