From: Hannes Reinecke <hare@suse.de>
Date: Thu, 17 Jul 2008 23:52:57 +0000 (-0700)
Subject: [SCSI] scsi_dh: Add 'dh_state' sysfs attribute
X-Git-Tag: v2.6.27-rc1~55^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c05ae52fcb0e27a2ee4a16d1f31f8c547fd4886;p=pandora-kernel.git

[SCSI] scsi_dh: Add 'dh_state' sysfs attribute

Implement a 'dh_state' sdev attribute for dynamic device handler
manipulation. A read on the attribute will return the name of
the currently attached device handler or 'detached' if no handler
is attached.
The attribute allows the following strings to be written:
- The name of the device handler to be attached if the state is
  'detached'.
- 'activate' to trigger path activation if a device handler
  is attached.
- 'detach' to detach the currently attached device handler.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

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