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aliena

Member

Registered: 2015-10-09

Posts: 29

[SOLVED] systemd-tmpfiles fails during pacman hook

Hi guys,

many system upgrades trigger the `systemd-tmpfiles.hook` which fails for me and leaves the error message "command not executed correctly" (translated myself) during upgrade. Digging deeper I learned that the hook executes `systemd-tmpfiles --create` which fails:

# systemd-tmpfiles --create
Failed to write file "/sys/block/sda/queue/scheduler": Invalid argument

Following the problem in strace gives me a hint:

openat(5, "scheduler", O_WRONLY|O_NOCTTY|O_NONBLOCK|O_CLOEXEC) = 4
write(4, "noop", 4)                     = -1 EINVAL (Invalid argument)

where systemd tries to write `noop` to the file `/sys/block/sda/queue/scheduler` which only supports the schedulers

# cat /sys/block/sda/queue/scheduler
[mq-deadline] kyber bfq none

So apparently systemd tries to set an invalid scheduler. But I have no clue where it takes the `noop` scheduler from. Can anybody give me a hint on how to fix this, please? I really don't like this error message during upgrades

Last edited by aliena (2019-04-02 07:34:15)

loqs

Member

Registered: 2014-03-06

Posts: 17,326

Re: [SOLVED] systemd-tmpfiles fails during pacman hook

The locations systemd-tmpfiles will search for conf files are listed in `man 5 tmpfiles.d`

aliena

Member

Registered: 2015-10-09

Posts: 29

Re: [SOLVED] systemd-tmpfiles fails during pacman hook

I found the faulty file in /etc/tmpfiles.d/10_ioscheduler.conf. No clue how it got there but now it's gone.

Thank you for the hint