23 строки
786 B
Plaintext
23 строки
786 B
Plaintext
|
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
|