projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a7bda83 DJ |
1 | What: /sys/class/scsi_host/hostX/isci_id |
| 2 | Date: June 2011 | |
| 3 | Contact: Dave Jiang <dave.jiang@intel.com> | |
| 4 | Description: | |
| 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. | |
| da0697bd ST |
14 | |
| 15 | What: /sys/class/scsi_host/hostX/acciopath_status | |
| 16 | Date: November 2013 | |
| 17 | Contact: Stephen M. Cameron <scameron@beardog.cce.hp.com> | |
| 18 | Description: 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. |