blob: 0eb255e7db123c84ebcd08d04f2cd867ee6bffa0 [file] [log] [blame]
Dave Jiang3a7bda82011-07-29 17:17:00 -07001What: /sys/class/scsi_host/hostX/isci_id
2Date: June 2011
3Contact: Dave Jiang <dave.jiang@intel.com>
4Description:
5 This file contains the enumerated host ID for the Intel
6 SCU controller. The Intel(R) C600 Series Chipset SATA/SAS
7 Storage Control Unit embeds up to two 4-port controllers in
8 a single PCI device. The controllers are enumerated in order
9 which usually means the lowest number scsi_host corresponds
10 with the first controller, but this association is not
11 guaranteed. The 'isci_id' attribute unambiguously identifies
12 the controller index: '0' for the first controller,
13 '1' for the second.
Scott Teelda0697b2014-02-18 13:57:00 -060014
15What: /sys/class/scsi_host/hostX/acciopath_status
16Date: November 2013
17Contact: Stephen M. Cameron <scameron@beardog.cce.hp.com>
18Description: This file contains the current status of the "SSD Smart Path"
19 feature of HP Smart Array RAID controllers using the hpsa
20 driver. SSD Smart Path, when enabled permits the driver to
21 send i/o requests directly to physical devices that are part
22 of a logical drive, bypassing the controllers firmware RAID
23 stack for a performance advantage when possible. A value of
24 '1' indicates the feature is enabled, and the controller may
25 use the direct i/o path to physical devices. A value of zero
26 means the feature is disabled and the controller may not use
27 the direct i/o path to physical devices. This setting is
28 controller wide, affecting all configured logical drives on the
29 controller. This file is readable and writable.