Loading Documentation/scsi/index.rst +1 −0 Original line number Diff line number Diff line Loading @@ -38,5 +38,6 @@ Linux SCSI Subsystem scsi_mid_low_api scsi-parameters scsi sd-parameters scsi_transport_srp/figures Documentation/scsi/sd-parameters.txt→Documentation/scsi/sd-parameters.rst +27 −0 Original line number Diff line number Diff line .. SPDX-License-Identifier: GPL-2.0 ====================================== Linux SCSI Disk Driver (sd) Parameters ====================================== Loading @@ -5,18 +8,20 @@ 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 =========================== === === =========== ========== 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: 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.: "temporary " to the cache type string. E.g.:: # echo "temporary write back" > cache_type Loading
Documentation/scsi/index.rst +1 −0 Original line number Diff line number Diff line Loading @@ -38,5 +38,6 @@ Linux SCSI Subsystem scsi_mid_low_api scsi-parameters scsi sd-parameters scsi_transport_srp/figures
Documentation/scsi/sd-parameters.txt→Documentation/scsi/sd-parameters.rst +27 −0 Original line number Diff line number Diff line .. SPDX-License-Identifier: GPL-2.0 ====================================== Linux SCSI Disk Driver (sd) Parameters ====================================== Loading @@ -5,18 +8,20 @@ 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 =========================== === === =========== ========== 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: 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.: "temporary " to the cache type string. E.g.:: # echo "temporary write back" > cache_type
