Re: [RFC v2 05/21] tcm: Add ConfigFS subsystem backstoreinfrastructure

From: FUJITA Tomonori
Date: Tue Oct 05 2010 - 20:17:47 EST


On Wed, 22 Sep 2010 15:49:10 -0700
"Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx> wrote:

> From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
>
> This patch adds the TCM/ConfigFS core HBA and device backstore infrastructre
> objects in /sys/kernel/config/target/core. It includes wrappers to logic for
> Persistent Reservations and ALUA, and supports Linux/SCSI, Linux/BLOCK, and Linux/FILEIO
> backstores using TCM subsystem plugin API.
>
> Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx>
> ---
> drivers/target/target_core_configfs.c | 3334 +++++++++++++++++++++++++++++++++
> include/target/target_core_configfs.h | 57 +
> 2 files changed, 3391 insertions(+), 0 deletions(-)
> create mode 100644 drivers/target/target_core_configfs.c
> create mode 100644 include/target/target_core_configfs.h

Can a driver create a directory/file under configfs?

ibmvscsi target driver gets the list of targets to set up from
hardware (see how drivers/scsi/ibmvscsi/ibmvstgt.c use
vio_register_driver). The driver needs to tell an user about it so
that he can set up luns, etc via configfs.
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