diff options
| -rw-r--r-- | Documentation/scsi/index.rst | 1 | ||||
| -rw-r--r-- | Documentation/scsi/sd-parameters.rst | 27 | ||||
| -rw-r--r-- | Documentation/scsi/sd-parameters.txt | 22 |
3 files changed, 28 insertions, 22 deletions
diff --git a/Documentation/scsi/index.rst b/Documentation/scsi/index.rst index 97276e425f25..6805e157b6e8 100644 --- a/Documentation/scsi/index.rst +++ b/Documentation/scsi/index.rst @@ -38,5 +38,6 @@ Linux SCSI Subsystem scsi_mid_low_api scsi-parameters scsi + sd-parameters scsi_transport_srp/figures diff --git a/Documentation/scsi/sd-parameters.rst b/Documentation/scsi/sd-parameters.rst new file mode 100644 index 000000000000..87d554008bfb --- /dev/null +++ b/Documentation/scsi/sd-parameters.rst @@ -0,0 +1,27 @@ +.. SPDX-License-Identifier: GPL-2.0 + +====================================== +Linux SCSI Disk Driver (sd) Parameters +====================================== + +cache_type (RW) +--------------- +Enable/disable drive write & read cache. + +=========================== === === =========== ========== + cache_type string WCE RCD Write cache Read cache +=========================== === === =========== ========== + write through 0 0 off on + none 0 1 off off + write back 1 0 on on + write back, no read (daft) 1 1 on off +=========================== === === =========== ========== + +To set cache type to "write back" and save this setting to the drive:: + + # echo "write back" > cache_type + +To modify the caching mode without making the change persistent, prepend +"temporary " to the cache type string. E.g.:: + + # echo "temporary write back" > cache_type diff --git a/Documentation/scsi/sd-parameters.txt b/Documentation/scsi/sd-parameters.txt deleted file mode 100644 index 8e5af00d88e7..000000000000 --- a/Documentation/scsi/sd-parameters.txt +++ /dev/null @@ -1,22 +0,0 @@ -Linux SCSI Disk Driver (sd) Parameters -====================================== - -cache_type (RW) ---------------- -Enable/disable drive write & read cache. - - cache_type string | WCE RCD | Write cache | Read cache -----------------------------+---------+-------------+------------ - write through | 0 0 | off | on - none | 0 1 | off | off - write back | 1 0 | on | on - write back, no read (daft) | 1 1 | on | off - -To set cache type to "write back" and save this setting to the drive: - - # echo "write back" > cache_type - -To modify the caching mode without making the change persistent, prepend -"temporary " to the cache type string. E.g.: - - # echo "temporary write back" > cache_type |