[PATCHv2 0/6] SCSI 'access_state' attribute

[Hannes Reinecke <hare@suse.de>]

Hi all,

here's the patchset to add an 'access_state' and 'preferred_path'
attribute. It will display the access state of a path if a
hardware handler is attached.
The access_state is given in terms of SCSI ALUA, and
the vendor-specific access state (eg for rdac or alua)
are mapped onto the ALUA values.
Additionally the 'is_visible' callback is updated to
only display the attributes if they are supported.

Changes to v1:
- Use sprintf instead of snprintf
- Call missing scsi_dh_remove() after a failed device_add()

Hannes Reinecke (6):
  scsi: Add 'access_state' and 'preferred_path' attribute
  scsi_dh_alua: use common definitions for ALUA state
  scsi_dh_alua: update 'access_state' field
  scsi_dh_rdac: update 'access_state' field
  scsi_dh_emc: update 'access_state' field
  scsi_sysfs: call 'device_add' after attaching device handler

 drivers/scsi/device_handler/scsi_dh_alua.c | 106 +++++++++++++++++++----------
 drivers/scsi/device_handler/scsi_dh_emc.c  |   7 +-
 drivers/scsi/device_handler/scsi_dh_rdac.c |  38 +++++++++--
 drivers/scsi/scsi_sysfs.c                  |  89 ++++++++++++++++++++++--
 include/scsi/scsi_device.h                 |   1 +
 include/scsi/scsi_proto.h                  |  12 ++++
 6 files changed, 203 insertions(+), 50 deletions(-)

-- 
1.8.5.6