Hi,
From the error message you are getting the it looks like the swapfile or
the directory it is sat in has the wrong label. you can use some of the
policy tools to fix this by setting the correct context... the RHEL
guide is good source for this
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/selinux_users_and_administrators_guide/sect-security-enhanced_linux-working_with_selinux-selinux_contexts_labeling_files
However even if you fix the selinux problem i do not think this will
work, you need to have a swap partition for hibernate / resume to work,
the systemd-hibernate-resume man page makes reference to needing a
specific device node.
Kind Regards,
Steve
Alexander Zhang <zhangal...@gmail.com> writes:
> Hello,
>
> I'm trying to enable hibernation to a swap file on Fedora 35. I've created a
> swapfile on a new BTRFS subvolume, added the resume dracut module, and set the
> kernel command line arguments. I've also added
> SYSTEMD_BYPASS_HIBERNATION_MEMORY_CHECK=1 to the environments of
> systemd-hibernate and systemd-logind since the swap size check is apparently
> incorrect for some reason. Currently, hibernating with echo platform >
> /sys/power/disk and echo disk > /sys/power/state works, but doing systemctl
> hibernate only locks and briefly turns off the screen. I found these lines in
> the logs, which seems to indicate that SELinux is causing the issue:
>
> Apr 15 23:16:14 fedora systemd[1]: Reached target Sleep.
> Apr 15 23:16:14 fedora systemd[1]: Starting Hibernate...
> Apr 15 23:16:14 fedora systemd-sleep[9774]: Failed to find location to
> hibernate
> to: Permission denied
> Apr 15 23:16:14 fedora audit[9774]: AVC avc: denied { search } for pid=9774
> comm="systemd-sleep" name="swap" dev="dm-0" ino=256
> scontext=system_u:system_r:systemd_sleep_t:s0
> tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=0
> Apr 15 23:16:14 fedora systemd[1]: systemd-hibernate.service: Main process
> exited, code=exited, status=1/FAILURE
> Apr 15 23:16:14 fedora systemd[1]: systemd-hibernate.service: Failed with
> result
> 'exit-code'.
> Apr 15 23:16:14 fedora systemd[1]: Failed to start Hibernate.
> Apr 15 23:16:14 fedora systemd[1]: Dependency failed for System Hibernation.
> Apr 15 23:16:14 fedora systemd[1]: hibernate.target: Job
> hibernate.target/start
> failed with result 'dependency'.
> Apr 15 23:16:14 fedora audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295
> ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-hibernate
> comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=?
> res=failed'
> Apr 15 23:16:14 fedora systemd-logind[1410]: Operation 'sleep' finished.
> Apr 15 23:16:14 fedora systemd[1]: Stopped target Sleep.
>
> How can I fix this?
>
> Thanks,
> Alexander Zhang
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