package avahi-daemon 0.6.31-4ubuntu4 failed to install/upgrade: 子进程 已安装 pre-removal 脚本 返回错误状态 1

[陈伟琪]

正在卸载 avahi-daemon (0.6.31-4ubuntu4) ...
Job for avahi-daemon.service canceled.
invoke-rc.d: initscript avahi-daemon, action "stop" failed.
dpkg: 处理软件包 avahi-daemon (--purge)时出错：
 子进程 已安装 pre-removal 脚本 返回错误状态 1
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
在处理时有错误发生：
 avahi-daemon
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: avahi-daemon 0.6.31-4ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5
Uname: Linux 3.19.0-28-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
Date: Sat Oct 3 21:12:04 2015
DuplicateSignature: package:avahi-daemon:0.6.31-4ubuntu4:子进程 已安装 pre-removal 脚本 返回错误状态 1
ErrorMessage: 子进程 已安装 pre-removal 脚本 返回错误状态 1
InstallationDate: Installed on 2014-12-18 (288 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4.1
SourcePackage: avahi
Title: package avahi-daemon 0.6.31-4ubuntu4 failed to install/upgrade: 子进程 已安装 pre-removal 脚本 返回错误状态 1
UpgradeStatus: Upgraded to vivid on 2015-04-29 (157 days ago)

[陈伟琪 (gameboy709494-d)]

I try uninstall it harder, and I fond something odd:

(I reinstalled avahi-daemon and rebooted )
(After I rebooted my pc successfully, I did "sudo systemctl stop avahi-daemon.service avahi-daemon.socket"), and then

chen@MSI-Ubuntu:~$ sudo apt-get purge avahi-daemon
正在读取软件包列表... 完成
正在分析软件包的依赖关系树
正在读取状态信息... 完成
下列软件包将被【卸载】：
  avahi-daemon* libnss-mdns*
升级了 0 个软件包，新安装了 0 个软件包，要卸载 2 个软件包，有 0 个软件包未被升级。
解压缩后将会空出 501 kB 的空间。
您希望继续执行吗？ [Y/n] y
(正在读取数据库 ... 系统当前共安装有 339528 个文件和目录。)
正在卸载 libnss-mdns:amd64 (0.10-6) ...
libnss-mdns.postrm: Checking NSS setup...
libnss-mdns.postrm: Removing mdns from NSS setup
正在清除 libnss-mdns:amd64 (0.10-6) 的配置文件 ...
正在卸载 avahi-daemon (0.6.31-4ubuntu4) ...
Warning: Stopping avahi-daemon.service, but it can still be activated by:
  avahi-daemon.socket
正在清除 avahi-daemon (0.6.31-4ubuntu4) 的配置文件 ...
userdel: user avahi is currently used by process 3300
/usr/sbin/deluser："/usr/sbin/userdel avahi"返回错误代码 8，退出。
/usr/sbin/delgroup: "avahi"仍以"avahi"作为他们的首选组!
rmdir: 删除 "/var/run/avahi-daemon" 失败: 目录非空
正在处理用于 libc-bin (2.21-0ubuntu4) 的触发器 ...
正在处理用于 dbus (1.8.12-1ubuntu5) 的触发器 ...
正在处理用于 man-db (2.7.0.2-5) 的触发器 ...
chen@MSI-Ubuntu:~$ cat /var/run/avahi-daemon/
cat: /var/run/avahi-daemon/: 权限不够
chen@MSI-Ubuntu:~$ sudo cat /var/run/avahi-daemon/*
cat: /var/run/avahi-daemon/*: 没有那个文件或目录
chen@MSI-Ubuntu:~$ cd /var/run
chen@MSI-Ubuntu:/var/run$ cd avahi-daemon/
bash: cd: avahi-daemon/: 权限不够
chen@MSI-Ubuntu:/var/run$ sudo su
root@MSI-Ubuntu:/run# cd avahi-daemon/
root@MSI-Ubuntu:/run/avahi-daemon# ls
pid socket
root@MSI-Ubuntu:/run/avahi-daemon# cat pid
3299
root@MSI-Ubuntu:/run/avahi-daemon#

The pid file on /run/avahi-daemon value is 3299 ,

and

root@MSI-Ubuntu:/run/avahi-daemon# ps -aux | grep avahi
avahi 3299 0.0 0.0 30312 3164 ? Ss 21:26 0:00 avahi-daemon: running [MSI-Ubuntu.local]
avahi 3300 0.0 0.0 30188 240 ? S 21:26 0:00 avahi-daemon: chroot helper
root 4340 0.0 0.0 11192 2336 pts/0 S+ 21:35 0:00 grep --color=auto avahi

So I may think the command "sudo systemctl stop avahi-daemon.service avahi-daemon.socket" not work.
Because It not kill the avahi-daemon process, So I can't remove the package avahi-daemon.

[陈伟琪 (gameboy709494-d)]

I ran:

 2023 sudo systemctl disable avahi-daemon.socket avahi-daemon.service
 2024 sudo systemctl stop avahi-daemon.socket avahi-daemon.service
 2025 sudo ps -aux | head
 2026 sudo ps -aux | grep avahi
 2027 sudo apt-get purge avahi-daemon
 2028 sudo rm /var/run/avahi-daemon/ -rf

chen@MSI-Ubuntu:/var/run$ sudo apt-get purge avahi-daemon
正在读取软件包列表... 完成
正在分析软件包的依赖关系树
正在读取状态信息... 完成
下列软件包将被【卸载】：
  avahi-daemon* libnss-mdns*
升级了 0 个软件包，新安装了 0 个软件包，要卸载 2 个软件包，有 0 个软件包未被升级。
解压缩后将会空出 501 kB 的空间。
您希望继续执行吗？ [Y/n] y
(正在读取数据库 ... 系统当前共安装有 339528 个文件和目录。)
正在卸载 libnss-mdns:amd64 (0.10-6) ...
libnss-mdns.postrm: Checking NSS setup...
libnss-mdns.postrm: Removing mdns from NSS setup
正在清除 libnss-mdns:amd64 (0.10-6) 的配置文件 ...
正在卸载 avahi-daemon (0.6.31-4ubuntu4) ...
正在清除 avahi-daemon (0.6.31-4ubuntu4) 的配置文件 ...
rmdir: 删除 "/var/run/avahi-daemon" 失败: 目录非空
正在处理用于 libc-bin (2.21-0ubuntu4) 的触发器 ...
正在处理用于 dbus (1.8.12-1ubuntu5) 的触发器 ...
正在处理用于 man-db (2.7.0.2-5) 的触发器 ...
chen@MSI-Ubuntu:/var/run$ sudo rm /var/run/avahi-daemon/ -rf

I think I removed it successfully.

[RansomStark (ransomstark)]

Thank you for taking the time to report this issue and helping to make Ubuntu better. We noticed that some of the sentences in this bug report are not in English. If they were translated to English they would be more understandable to triagers. Could you please translate them?

[Launchpad Janitor (janitor)]

[Expired for avahi (Ubuntu) because there has been no activity for 60 days.]