On Mi, 29.03.23 14:07, Christoph Anton Mitterer (cales...@scientia.org) wrote:

> When I useĀ 
>    systemd.log_level=debug systemd.log_target=console
> in the kernel parameters, and then do systemctl hibernate during the
> system I get:
> Mar 29 12:04:48 hbt systemd-logind[780]: Got message type=method_call 
> sender=:1.9 destination=org.freedesktop.login1 path=/org/freedesktop/login1 
> interface=org.freedesktop.login1.Manager member=SetWallMessage cookie=2 
> reply_cookie=0 signature=sb error-name=n/a error-message=n/a
> Mar 29 12:04:48 hbt systemd-logind[780]: Sent message type=method_return 
> sender=n/a destination=:1.9 path=n/a interface=n/a member=n/a cookie=61 
> reply_cookie=2 signature=n/a error-name=n/a error-message=n/a
> Mar 29 12:04:48 hbt systemd-logind[780]: Got message type=method_call 
> sender=:1.9 destination=org.freedesktop.login1 path=/org/freedesktop/login1 
> interface=org.freedesktop.login1.Manager member=HibernateWithFlags cookie=3 
> reply_cookie=0 signature=t error-name=n/a error-message=n/a
> Mar 29 12:04:48 hbt systemd-logind[780]: Sleep mode "disk" is supported by 
> the kernel.
> Mar 29 12:04:48 hbt systemd-logind[780]: Disk sleep mode "shutdown" is 
> supported by the kernel.
> Mar 29 12:04:48 hbt systemd-logind[780]: No possible swap partitions or files 
> suitable for hibernation were found in /proc/swaps.
> Mar 29 12:04:48 hbt systemd-logind[780]: Sent message type=error sender=n/a 
> destination=:1.9 path=n/a interface=n/a member=n/a cookie=62 reply_cookie=3 
> signature=s error-name=org.freedesktop.login1.SleepVerbNotSupported 
> error-message=Not enough swap space for hibernation
> Mar 29 12:04:48 hbt systemd-logind[780]: Failed to process message 
> type=method_call sender=:1.9 destination=org.freedesktop.login1 
> path=/org/freedesktop/login1 interface=org.freedesktop.login1.Manager 
> member=HibernateWithFlags cookie=3 reply_cookie=0 signature=t error-name=n/a 
> error-message=n/a: Not enough swap space for hibernation
>
> Does that mean it's the same problem as with the desktop environment?
> I.e. systemdctl first asking logind whether hibernate was available,
> before even starting hibernate.target?

Yeah, all requests that go through logind check that.

You can override the check via an environment variable,
SYSTEMD_BYPASS_HIBERNATION_MEMORY_CHECK=1 btw, see
https://systemd.io/ENVIRONMENT/

Lennart

--
Lennart Poettering, Berlin

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