--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0
+.. include:: ../disclaimer-zh_CN.rst
+
+:Original: Documentation/scsi/sd-parameters.rst
+
+:翻译:
+
+ 郝栋栋 doubled <doubled@leap-io-kernel.com>
+
+:校译:
+
+
+
+============================
+Linux SCSI磁盘驱动(sd)参数
+============================
+
+缓存类型(读/写)
+------------------
+启用/禁用驱动器读写缓存。
+
+=========================== ===== ===== ======= =======
+ 缓存类型字符串 WCE RCD 写缓存 读缓存
+=========================== ===== ===== ======= =======
+ write through 0 0 关闭 开启
+ none 0 1 关闭 关闭
+ write back 1 0 开启 开启
+ write back, no read (daft) 1 1 开启 关闭
+=========================== ===== ===== ======= =======
+
+将缓存类型设置为“write back”并将该设置保存到驱动器::
+
+ # echo "write back" > cache_type
+
+如果要修改缓存模式但不使更改持久化,可在缓存类型字符串前
+添加“temporary ”。例如::
+
+ # echo "temporary write back" > cache_type