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IMPORT 的值无效（替代类型无效）

tag-icon • tag-icon mount automount
IMPORT 的值无效（替代类型无效）

在 Ubuntu 服务器 22.04 上我收到以下错误：

Jul 29 06:23:54 can1 systemd-udevd[384]: /etc/udev/rules.d/99-digitalocean-automount.rules:11 Invalid value "/bin/sh -c 'echo TMP_MOUNT_DIR=$(mktemp -d -p /mnt .do-first-mount-XXXXXXXXX)'" for IMPORT (char 32: invalid substitution type), ignoring.
Jul 29 06:23:54 can1 systemd-udevd[384]: /etc/udev/rules.d/99-digitalocean-automount.rules:12 Invalid value "/bin/sh -c 'echo TMP_SCRIPT=$(mktemp -t .do-first-mount-XXXXXXXXX.sh)'" for IMPORT (char 29: invalid substitution type), ignoring.

我检查了 /etc/udev/rules.d/99-digitalocean-automount.rules 中的内容，发现了以下几行（除了其他行）：

# Create a temporary mountpoint and temporary location for the first-mount script.
IMPORT{program}="/bin/sh -c 'echo TMP_MOUNT_DIR=$(mktemp -d -p /mnt .do-first-mount-XXXXXXXXX)'"
IMPORT{program}="/bin/sh -c 'echo TMP_SCRIPT=$(mktemp -t .do-first-mount-XXXXXXXXX.sh)'"

怎么了？

编辑：这是 99-digitalocean-automount.rules 文件的内容

# Only try to automount DO block volumes.
SUBSYSTEM!="block", GOTO="do_automount_end"
ENV{ID_VENDOR}!="DO", GOTO="do_automount_end"
ENV{ID_MODEL}!="Volume", GOTO="do_automount_end"
# Only automount on the "add" action.
ACTION!="add", GOTO="do_automount_end"
# Only try to automount filesystems we know about.
ENV{ID_FS_TYPE}!="ext4|xfs", GOTO="do_automount_end"

# Create a temporary mountpoint and temporary location for the first-mount script.
IMPORT{program}="/bin/sh -c 'echo TMP_MOUNT_DIR=$(mktemp -d -p /mnt .do-first-mount-XXXXXXXXX)'"
IMPORT{program}="/bin/sh -c 'echo TMP_SCRIPT=$(mktemp -t .do-first-mount-XXXXXXXXX.sh)'"

# Mount the volume at the temp mountpoint and copy the script off, then unmount.
RUN{program}+="/bin/mount -o ro /dev/%k %E{TMP_MOUNT_DIR}"
RUN{program}+="/bin/sh -c '/bin/cp %E{TMP_MOUNT_DIR}/.first-mount.sh %E{TMP_SCRIPT} || exit 0'"
RUN{program}+="/bin/umount %E{TMP_MOUNT_DIR}"
RUN{program}+="/bin/rmdir %E{TMP_MOUNT_DIR}"

# Run the first-mount script. If it didn't exist this will be a no-op.
RUN{program}+="/bin/sh %E{TMP_SCRIPT} '%E{ID_SERIAL}' '%E{ID_FS_TYPE}' '%E{ID_SERIAL_SHORT}' '%E{ID_FS_UUID}' '%E{ID_FS_LABEL}'"

# Clean up.
RUN{program}+="/bin/rm %E{TMP_SCRIPT}"

# Finally, try and mount the volume. On first mount this will fail, but that's
# OK because the volume was already mounted by the first-mount script.
RUN{program}+="/bin/sh -c '/bin/mount /dev/%k || exit 0'"

LABEL="do_automount_end"

答案1

$$我相信您只需要在 shell 命令中 使用双美元符号 ( )。udev有用单个美元符号表示的“替换”，并且$$是 的替换$。

IMPORT{program}="/bin/sh -c 'echo TMP_MOUNT_DIR=$(mktemp -d -p /mnt .do-first-mount-XXXXXXXXX)'"
IMPORT{program}="/bin/sh -c 'echo TMP_SCRIPT=$(mktemp -t .do-first-mount-XXXXXXXXX.sh)'"

变成

IMPORT{program}="/bin/sh -c 'echo TMP_MOUNT_DIR=$$(mktemp -d -p /mnt .do-first-mount-XXXXXXXXX)'"
IMPORT{program}="/bin/sh -c 'echo TMP_SCRIPT=$$(mktemp -t .do-first-mount-XXXXXXXXX.sh)'"

链接

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