From: Scott Teel <scott.teel@hp.com>
Date: Tue, 18 Feb 2014 19:57:00 +0000 (-0600)
Subject: [SCSI] hpsa: allow user to disable accelerated i/o path
X-Git-Tag: v3.15-rc1~136^2~112
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da0697bd3075598f7990002dc46f208d722b6160;p=pandora-kernel.git

[SCSI] hpsa: allow user to disable accelerated i/o path

Allow SSD Smart Path for a controller to be disabled by
the user, regardless of settings in controller firmware
or array configuration.

To disable:     echo 0 > /sys/class/scsi_host/host<id>/acciopath_status
To re-enable:   echo 1 > /sys/class/scsi_host/host<id>/acciopath_status
To check state: cat /sys/class/scsi_host/host<id>/acciopath_status

Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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