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1.. SPDX-License-Identifier: GPL-2.0
2
3======================================
4Linux SCSI Disk Driver (sd) Parameters
5======================================
6
7cache_type (RW)
8---------------
9Enable/disable drive write & read cache.
10
11=========================== === === =========== ==========
12 cache_type string WCE RCD Write cache Read cache
13=========================== === === =========== ==========
14 write through 0 0 off on
15 none 0 1 off off
16 write back 1 0 on on
17 write back, no read (daft) 1 1 on off
18=========================== === === =========== ==========
19
20To set cache type to "write back" and save this setting to the drive::
21
22 # echo "write back" > cache_type
23
24To modify the caching mode without making the change persistent, prepend
25"temporary " to the cache type string. E.g.::
26
27 # echo "temporary write back" > cache_type
1.. SPDX-License-Identifier: GPL-2.0
2
3======================================
4Linux SCSI Disk Driver (sd) Parameters
5======================================
6
7cache_type (RW)
8---------------
9Enable/disable drive write & read cache.
10
11=========================== === === =========== ==========
12 cache_type string WCE RCD Write cache Read cache
13=========================== === === =========== ==========
14 write through 0 0 off on
15 none 0 1 off off
16 write back 1 0 on on
17 write back, no read (daft) 1 1 on off
18=========================== === === =========== ==========
19
20To set cache type to "write back" and save this setting to the drive::
21
22 # echo "write back" > cache_type
23
24To modify the caching mode without making the change persistent, prepend
25"temporary " to the cache type string. E.g.::
26
27 # echo "temporary write back" > cache_type