![添加 /dev/disk 的路径](https://linux22.com/image/876285/%E6%B7%BB%E5%8A%A0%20%2Fdev%2Fdisk%20%E7%9A%84%E8%B7%AF%E5%BE%84.png)
我有一个依赖于 的脚本/dev/disk/by-path
,但该子目录不存在。当我 时ls /dev/disk
,我得到:
by-id by-label by-uuid
如何得到by-path
?
(grep -ri 'by-path' /lib/udev/rules.d/60-persistent-storage.rules 的输出为:
# persistent storage links: /dev/disk/{by-id,by-uuid,by-label,by-path}
# by-path (parent device path)
ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n"
)
(sudo udevadm info --root --name=/dev/sdc | grep DEVTYPE 的输出为:
E: DEVTYPE=disk
)
答案1
/dev/disk/by-path
当您将 SD 卡添加到系统时(不是通过) ,该路径会自动创建mount
。负责此操作的是udev
,并且规则
/lib/udev/rules.d/60-persistent-storage.rules
通过一个简单的命令你就可以看到规则:
% grep -ri 'by-path' /lib/udev/rules.d/60-persistent-storage.rules
# persistent storage links: /dev/disk/{by-id,by-uuid,by-label,by-path}
# by-path (parent device path)
ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n"
你不应该使用它ls /dev/disk/by-path
来获取变量的值。使用
for f in /dev/disk/by-path/*; do echo "$f"; done
反而。