[Pvfs2-developers] server id

[Phil Carns]

> On Mar 12, 2008, at 8:53 AM, Phil Carns wrote:
> 
>> The shortest way that I see is this:
>>
>> 1) call PINT_cached_config_get_server_name() to get the name of the 
>> server that owns the handle in question (ie, "tcp://host:port")
>>
>> 2) call get_server_config_struct() to get a pointer to your local 
>> server's configuration values
>>
>> 3) do a string comparison of the string from step 1 to the "host_id" 
>> field in the struct from step 2 and see if they match
> 
> It might be cleaner/easier to do:
> 
> config = get_server_config_struct();
> PINT_cached_config_get_server(fsid, config->host_id, server_type, 
> &extent_array);
> 
> If you don't care about the server type, you can pass in:
> 
>  PINT_SERVER_TYPE_META|PINT_SERVER_TYPE_IO
> 
> Then with the returned extent_array, you can do:
> 
> is_my_handle = PINT_handle_in_extent_array(&extent_array, your_handle);
> 
> That function is defined in src/common/misc/extent-utils.h

Yeah, Sam's approach is definitely nicer.  That way if you have to look 
at many handles you only have to make one cached config call and then 
you can use the much cheaper extent array function for each handle.  My 
approach required both searching the cached config and doing a string 
comparison for every handle.

-Phil