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replabrobin

Member

Registered: 2010-05-06

Posts: 240

SOLVED: after kernel update the at command fails to work properly

Edit: it seems this is a bug in the 3.2.4 changes

see https://bugs.debian.org/cgi-bin/bugrepo … ug=1004972

and is likely fixed in 3.2.5

I updated Feb 5th and have a new version of at at-3.2.4-1-x86_64.pkg.tar.zst

After this I find the command doesn't seem to check the time so this command

$ echo espeak hello | at now + 1 min
warning: commands will be executed using /bin/sh
job 4110 at Sat Feb  5 17:41:00 2022
user@host:/var/cache/pacman/pkg
$ date
Sat  5 Feb 17:43:47 GMT 2022
user@host:/var/cache/pacman/pkg
$ atq | sort | tail -1
4110	Sat Feb  5 17:41:00 2022 a user
user@host:/var/cache/pacman/pkg
$ 

doesn't execute the expected command. If I enter another at command then the previous command gets executed so

$ echo espeak world | at now + 1 min
warning: commands will be executed using /bin/sh
job 4111 at Sat Feb  5 17:46:00 2022
user@host:/var/cache/pacman/pkg
$ atq | sort | tail -2
4088	Thu Feb 24 12:30:00 2022 a user
4111	Sat Feb  5 17:46:00 2022 a user ##### I hear hello at this point #####
user@host:/var/cache/pacman/pkg
$ date
Sat  5 Feb 17:48:11 GMT 2022
user@host:/var/cache/pacman/pkg
$ 

so it seems the atd daemon isn't checking the time properly. I tried downgrading the at package to at-3.2.2-1-x86_64.pkg.tar.zst, but that doesn't seem to fix the problem. As a guess I have downgraded the kernel from

linux-5.16.5.arch1-1-x86_64.pkg.tar.zst to linux-5.16.3.arch1-1-x86_64.pkg.tar.zst

keeping all other pkgs as of Feb 5. After a reboot the at command again works as expected. Is there some extra configuration I need to do with the latest kernel?

Last edited by replabrobin (2022-02-28 12:54:56)

replabrobin

Member

Registered: 2010-05-06

Posts: 240

Re: SOLVED: after kernel update the at command fails to work properly

It occurred to me that perhaps the issue lies with the espeak command requiring some special case environment, but I find that with the Feb 5 update even this command

echo 'sh -c "date >> /tmp/atd-test.out"' | at now + 1 min

fails to execute until another at command is entered. it works exactly as expected if I use pacman -Syyuu  with the 2022/01/29 archive set up in mirrolist.

Last edited by replabrobin (2022-02-07 16:07:39)