.. SPDX-License-Identifier: GPL-2.0 .. include:: ../disclaimer-zh_CN.rst :Original: Documentation/scsi/sd-parameters.rst :翻译: 郝栋栋 doubled :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