Commit | Line | Data |
---|---|---|
18d595bf WZ |
1 | Linux SCSI Disk Driver (sd) Parameters |
2 | ====================================== | |
3 | ||
4 | cache_type (RW) | |
5 | --------------- | |
6 | Enable/disable drive write & read cache. | |
7 | ||
8 | cache_type string | WCE RCD | Write cache | Read cache | |
9 | ----------------------------+---------+-------------+------------ | |
10 | write through | 0 0 | off | on | |
11 | none | 0 1 | off | off | |
12 | write back | 1 0 | on | on | |
13 | write back, no read (daft) | 1 1 | on | off | |
14 | ||
15 | To set cache type to "write back" and save this setting to the drive: | |
16 | ||
17 | # echo "write back" > cache_type | |
18 | ||
19 | To modify the caching mode without making the change persistent, prepend | |
20 | "temporary " to the cache type string. E.g.: | |
21 | ||
22 | # echo "temporary write back" > cache_type |