[Sheepdog] [PATCH v5 02/17] store: add dynamic mechanism to chain the available backend stores.

[MORITA Kazutaka]

At Thu, 05 Jan 2012 19:10:32 +0800,
Liu Yuan wrote:
> 
> On 01/05/2012 04:27 AM, MORITA Kazutaka wrote:
> > How about sending the driver name instead of its index?  Then, we
> > don't need to maintain consistency between index_to_name() and
> > get_store_index().
> 
> 
> Yes, but seems that struct sd_so_req only have 7 bytes available, we
> have some limit to name the store driver, in assumption we don't create
> a new sd_xx_req struct.

SD_OP_MAKE_FS doesn't send any data after the header, so how about
sending the driver name as its data.  What I mean is:
 - set (strlen(driver_name) + 1) to hdr.data_length and wlen
 - pass driver_name to the third argument of exec_req()

Thanks,

Kazutaka