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主页 / unix / 问题 / 519221
Accepted
RomuloPBenedetti
RomuloPBenedetti
Asked: 2019-05-17 00:49:11 +0800 CST2019-05-17 00:49:11 +0800 CST 2019-05-17 00:49:11 +0800 CST

如何在安装单元中解决此订购周期?

  • 772

Systemd-analyze 给我不同的结果取决于我执行它的次数,我正在做Systemd-analyze verify mnt-HDDs.mount和得到:

local-fs.target: Found ordering cycle on HDDs-unlock.service/start
local-fs.target: Found dependency on sysinit.target/start
local-fs.target: Found dependency on systemd-update-done.service/start
local-fs.target: Found dependency on local-fs.target/start
local-fs.target: Job systemd-update-done.service/start deleted to break ordering cycle starting with local-fs.target/start
local-fs.target: Found ordering cycle on HDDs-unlock.service/start
local-fs.target: Found dependency on sysinit.target/start
local-fs.target: Found dependency on systemd-journal-catalog-update.service/start
local-fs.target: Found dependency on local-fs.target/start
local-fs.target: Job systemd-journal-catalog-update.service/start deleted to break ordering cycle starting with local-fs.target/start
local-fs.target: Found ordering cycle on HDDs-unlock.service/start
local-fs.target: Found dependency on sysinit.target/start
local-fs.target: Found dependency on systemd-machine-id-commit.service/start
local-fs.target: Found dependency on local-fs.target/start
local-fs.target: Job systemd-machine-id-commit.service/start deleted to break ordering cycle starting with local-fs.target/start
local-fs.target: Found ordering cycle on HDDs-unlock.service/start
local-fs.target: Found dependency on sysinit.target/start
local-fs.target: Found dependency on local-fs.target/start
local-fs.target: Job local-fs.target/start deleted to break ordering cycle starting with local-fs.target/start
sysinit.target: Found ordering cycle on plymouth-read-write.service/start
sysinit.target: Found dependency on local-fs.target/start
sysinit.target: Found dependency on mnt-HDDs.mount/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job plymouth-read-write.service/start deleted to break ordering cycle starting with sysinit.target/start
sysinit.target: Found ordering cycle on local-fs.target/start
sysinit.target: Found dependency on mnt-HDDs.mount/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job local-fs.target/start deleted to break ordering cycle starting with sysinit.target/start
sysinit.target: Found ordering cycle on systemd-update-done.service/start
sysinit.target: Found dependency on local-fs.target/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job systemd-update-done.service/start deleted to break ordering cycle starting with sysinit.target/start
sysinit.target: Found ordering cycle on systemd-machine-id-commit.service/start
sysinit.target: Found dependency on local-fs.target/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job systemd-machine-id-commit.service/start deleted to break ordering cycle starting with sysinit.target/start
sysinit.target: Found ordering cycle on systemd-tmpfiles-setup.service/start
sysinit.target: Found dependency on local-fs.target/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job systemd-tmpfiles-setup.service/start deleted to break ordering cycle starting with sysinit.target/start
sysinit.target: Found ordering cycle on plymouth-read-write.service/start
sysinit.target: Found dependency on local-fs.target/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job plymouth-read-write.service/start deleted to break ordering cycle starting with sysinit.target/start
sysinit.target: Found ordering cycle on local-fs.target/start
sysinit.target: Found dependency on HDDs-unlock.service/start
sysinit.target: Found dependency on sysinit.target/start
sysinit.target: Job local-fs.target/start deleted to break ordering cycle starting with sysinit.target/start

mnt-HDDs.mount 中直接涉及的创建单元:

mnt-HDDs.mount:

[Unit]
Description=Mount unit for encripted device /mnt/HDDs
After=HDDs-unlock.service

[Mount]
Where=/mnt/HDDs
What=/dev/mapper/cryptHDDB
Type=btrfs
Options=noatime,compress-force=zstd,autodefrag,flushoncommit

HDDs-unlock.service

[Unit]
Description=HDDB and HDDC unlock
After=media-key.mount umount.target local-fs-pre.target
Before=local-fs.target
Conflicts=umount.target

[Service]
Type=oneshot
RemainAfterExit=yes
KillMode=none
ExecStart=/usr/bin/HDDs-unlock.sh
ExecStop=/usr/bin/HDDs-lock.sh

[Install]
RequiredBy=mnt-HDDs.mount

媒体密钥.mount

[Unit]
Description=HDDs key
StopWhenUnneeded=true

[Mount]
Where=/media/key
What=/dev/disk/by-id/usb-SMI_USB_DISK_AA00000000065845-0:0
Options=ro,offset=952320
DirectoryMode=0400

[Install]
RequiredBy=HDDs-unlock.service

有一个fstab条目/mnt/HDDs/@通过自动依赖调用来安装mnt-HDDs.mount,在重新启动以寻找解决方案时,有时它会使我的启动跳过一些服务,有时会在没有网络的情况下启动,对解决这个排序周期有什么启示吗?

fedora systemd
  • 1 1 个回答
  • 4694 Views

1 个回答

  • Voted
  1. Best Answer
    RomuloPBenedetti
    2019-05-18T01:04:24+08:002019-05-18T01:04:24+08:00

    好的,经过大量搜索(以及在 StackExchange 中对这个答案的大量重新访问),我觉得这个答案与我面临的问题大致相同。

    基本上挂载单元隐式出现在 local-fs-pre.targe 和 local-fs.targe 之间,在 basic.target 之前,问题是服务得到隐式 Requires=basic.target 和 After=basic.target。解决方案是禁用默认依赖项:

    [Unit]
    ....
    DefaultDependencies=no
    ....
    
    • 7

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