Re: Why using configfs as the only interface is wrong for a storage target

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On Mon, 2011-02-07 at 12:41 +0100, Bart Van Assche wrote:
> On Fri, Feb 4, 2011 at 7:45 AM, Nicholas A. Bellinger
> <nab@xxxxxxxxxxxxxxx> wrote:
> > Please consider the following patch series for mainline target code.
> > It consists of predominately configfs bugfixes uncovered with recent SLUB
> > poison testing, and proper removal of legacy procfs target_core_mib.c code.
> > Note that the complete set of fabric independent statistics (SCSI MIBs) and
> > fabric dependent statistics will be included as native configfs group context
> > 'per value' attribute series during the .39 time frame.
> 

<SNIP>

> As we all know, it is not possible for a
> storage target to make these directories appear / disappear
> automatically in configfs because of basic configfs design choices.
> 

Of course it's possible to drive configfs struct config_group creation
from kernel space.  That is a tool that was used during LIO v2.x -> v3.x
IOCTL -> CONFIGFS bringup and conversion, remember..?

However Joel as the configfs maintainer did not want this code in
mainline, and I dropped the patch from lio-core-2.6.git some time ago.
If you think this is a worth-while discussion to revist perhaps you
should re-create the logic, and address the issues that Joel had with
the original code.

--nab


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