[Gluster-devel] option client-volume-filename (was) Re: Fwd: [Gluster-devel] proposals to afr

[Chris Johnson]

On Fri, 26 Oct 2007, Matt Paine wrote:

      THANK YOU!

> Hi Chris, your mail almost got lost in another thread :)
>
>>      Now I'm really confused.  This option is on the server side.
>> Presumably when the client is started it already knows where the file
>> is due to -f on the client side.  I don't understand.
>> 
>>> Its used by '-s' option of glusterfs client for getting the specification
>>> file from server.
>
>
> The client configuration can be pulled in through two different ways:
>
> 1) through a local config file specified by -f
>
> OR....
>
> 2) pulled in through the servers copy.
>
>
> If you pull it in through the server then you don't need to distribute a new 
> client file to every client every time its modified (when the client 
> re-mounts, it will request the config file again from the server and get the 
> updated one).
>
> It also means that every client will have a compatable config file. I.e. if a 
> volume is ment to be for a union, then all the clients will use it as a union 
> if they get there spec files from the server. However, a client *may* try to 
> use half of the union directly. This will not be an ERROR in the strict sense 
> of the word, but that client will now be violating the union filesystem 
> policy.
>
>
> Hope this clears up some confusions (and doesn't add to it :)
>
>
> Matt.
>
>
>
>
>
>

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