The output was too big, so I cut it:
# journalctl -b -u init.scope
-- Logs begin at Fri 2020-06-12 15:23:48 MSK, end at Wed 2021-06-16 16:20:52 MSK. --июн 16 09:19:59 pilgrim systemd[1]: Started Rule-based Manager for Device Events and Files.
июн 16 09:19:59 pilgrim systemd[1]: Condition check resulted in dracut pre-trigger hook being skipped.
июн 16 09:19:59 pilgrim systemd[1]: Starting Coldplug All udev Devices...
июн 16 09:19:59 pilgrim systemd[1]: Finished Coldplug All udev Devices.
июн 16 09:19:59 pilgrim systemd[1]: Starting dracut initqueue hook...
июн 16 09:19:59 pilgrim systemd[1]: Starting Show Plymouth Boot Screen...
июн 16 09:19:59 pilgrim systemd[1]: Received SIGRTMIN+20 from PID 304 (plymouthd).
июн 16 09:19:59 pilgrim systemd[1]: Started Show Plymouth Boot Screen.
июн 16 09:19:59 pilgrim systemd[1]: Condition check resulted in Dispatch Password Requests to Console Directory Watch being skipped.
июн 16 09:19:59 pilgrim systemd[1]: Started Forward Password Requests to Plymouth Directory Watch.
июн 16 09:19:59 pilgrim systemd[1]: Reached target Paths.
июн 16 09:20:00 pilgrim systemd[1]: Found device WDC_WD10EZEX-00WN4A0 primary.
июн 16 09:20:00 pilgrim systemd[1]: Found device WDC_WD10EZEX-00WN4A0 primary.
июн 16 09:20:00 pilgrim systemd[1]: Starting Resume from hibernation using device /dev/sda2...
июн 16 09:20:00 pilgrim systemd[1]: systemd-hibernate-resume@dev-sda2.service: Succeeded.
июн 16 09:20:00 pilgrim systemd[1]: Finished Resume from hibernation using device /dev/sda2.
июн 16 09:20:00 pilgrim systemd[1]: Reached target Local File Systems (Pre).
июн 16 09:20:00 pilgrim systemd[1]: Reached target Local File Systems.
июн 16 09:20:00 pilgrim systemd[1]: Starting Create Volatile Files and Directories...
июн 16 09:20:00 pilgrim systemd[1]: Finished Create Volatile Files and Directories.
июн 16 09:20:00 pilgrim systemd[1]: Reached target System Initialization.
июн 16 09:20:00 pilgrim systemd[1]: Reached target Basic System.
июн 16 09:20:01 pilgrim systemd[1]: Found device WDC_WD10EZEX-00WN4A0 primary.
июн 16 09:20:01 pilgrim systemd[1]: Reached target Initrd Root Device.
июн 16 09:20:01 pilgrim systemd[1]: Finished dracut initqueue hook.
июн 16 09:20:01 pilgrim systemd[1]: Reached target Remote File Systems (Pre).
июн 16 09:20:01 pilgrim systemd[1]: Reached target Remote File Systems.
июн 16 09:20:01 pilgrim systemd[1]: Condition check resulted in dracut pre-mount hook being skipped.
июн 16 09:20:01 pilgrim systemd[1]: Starting File System Check on /dev/disk/by-uuid/31e8df4d-26ce-4afa-b741-0dcbf64fe722...
июн 16 09:20:01 pilgrim systemd[1]: Finished File System Check on /dev/disk/by-uuid/31e8df4d-26ce-4afa-b741-0dcbf64fe722.
июн 16 09:20:01 pilgrim systemd[1]: Mounting /sysroot...
июн 16 09:20:02 pilgrim systemd[1]: Mounted /sysroot.
июн 16 09:20:02 pilgrim systemd[1]: Reached target Initrd Root File System.
июн 16 09:20:02 pilgrim systemd[1]: Starting Reload Configuration from the Real Root...
июн 16 09:20:02 pilgrim systemd[1]: Reloading.
июн 16 09:20:02 pilgrim systemd[1]: /usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed.
июн 16 09:20:02 pilgrim systemd[1]: initrd-parse-etc.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Finished Reload Configuration from the Real Root.
июн 16 09:20:02 pilgrim systemd[1]: Reached target Initrd File Systems.
июн 16 09:20:02 pilgrim systemd[1]: Reached target Initrd Default Target.
июн 16 09:20:02 pilgrim systemd[1]: Condition check resulted in dracut mount hook being skipped.
июн 16 09:20:02 pilgrim systemd[1]: Condition check resulted in dracut pre-pivot and cleanup hook being skipped.
июн 16 09:20:02 pilgrim systemd[1]: Starting Cleaning Up and Shutting Down Daemons...
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Initrd Default Target.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Basic System.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Initrd Root Device.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Paths.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Remote File Systems.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Remote File Systems (Pre).
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Slices.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Sockets.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target System Initialization.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Swap.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Timers.
июн 16 09:20:02 pilgrim systemd[1]: dracut-initqueue.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped dracut initqueue hook.
июн 16 09:20:02 pilgrim systemd[1]: Starting Plymouth switch root service...
июн 16 09:20:02 pilgrim systemd[1]: systemd-sysctl.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Apply Kernel Variables.
июн 16 09:20:02 pilgrim systemd[1]: systemd-modules-load.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Load Kernel Modules.
июн 16 09:20:02 pilgrim systemd[1]: systemd-tmpfiles-setup.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Create Volatile Files and Directories.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Local File Systems.
июн 16 09:20:02 pilgrim systemd[1]: Stopped target Local File Systems (Pre).
июн 16 09:20:02 pilgrim systemd[1]: systemd-udev-trigger.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Coldplug All udev Devices.
июн 16 09:20:02 pilgrim systemd[1]: Stopping Rule-based Manager for Device Events and Files...
июн 16 09:20:02 pilgrim systemd[1]: initrd-cleanup.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Finished Cleaning Up and Shutting Down Daemons.
июн 16 09:20:02 pilgrim systemd[1]: systemd-udevd.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Rule-based Manager for Device Events and Files.
июн 16 09:20:02 pilgrim systemd[1]: systemd-udevd-control.socket: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Closed udev Control Socket.
июн 16 09:20:02 pilgrim systemd[1]: systemd-udevd-kernel.socket: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Closed udev Kernel Socket.
июн 16 09:20:02 pilgrim systemd[1]: dracut-pre-udev.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped dracut pre-udev hook.
июн 16 09:20:02 pilgrim systemd[1]: dracut-cmdline.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped dracut cmdline hook.
июн 16 09:20:02 pilgrim systemd[1]: dracut-cmdline-ask.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped dracut ask for additional cmdline parameters.
июн 16 09:20:02 pilgrim systemd[1]: Starting Cleanup udev Database...
июн 16 09:20:02 pilgrim systemd[1]: systemd-tmpfiles-setup-dev.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Create Static Device Nodes in /dev.
июн 16 09:20:02 pilgrim systemd[1]: kmod-static-nodes.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Stopped Create list of static device nodes for the current kernel.
июн 16 09:20:02 pilgrim systemd[1]: initrd-udevadm-cleanup-db.service: Succeeded.
июн 16 09:20:02 pilgrim systemd[1]: Finished Cleanup udev Database.
июн 16 09:20:02 pilgrim systemd[1]: Reached target Switch Root.
июн 16 09:20:02 pilgrim systemd[1]: Finished Plymouth switch root service.
июн 16 09:20:02 pilgrim systemd[1]: Starting Switch Root...
июн 16 09:20:02 pilgrim systemd[1]: Switching root.
...
июн 16 09:20:10 pilgrim systemd[1]: Mounted /home.
июн 16 09:20:10 pilgrim systemd[1]: Reached target Local File Systems.
июн 16 09:20:10 pilgrim systemd[1]: Starting Restore /run/initramfs on shutdown...
июн 16 09:20:10 pilgrim systemd[1]: Starting Tell Plymouth To Write Out Runtime Data...
...
# journalctl -b -u '*mount*'
-- Logs begin at Fri 2020-06-12 15:23:48 MSK, end at Wed 2021-06-16 16:26:16 MSK. --
июн 16 09:20:01 pilgrim systemd[1]: Condition check resulted in dracut pre-mount hook being skipped.
июн 16 09:20:01 pilgrim systemd[1]: Mounting /sysroot...
июн 16 09:20:02 pilgrim systemd[1]: Mounted /sysroot.
июн 16 09:20:02 pilgrim systemd[1]: Condition check resulted in dracut mount hook being skipped.
июн 16 09:20:06 pilgrim systemd[1]: Mounting FUSE Control File System...
июн 16 09:20:06 pilgrim systemd[1]: Mounted FUSE Control File System.
июн 16 09:20:09 pilgrim systemd[1]: Mounting /.snapshots...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /boot/efi...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /boot/grub2/i386-pc...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /boot/grub2/x86_64-efi...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /opt...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /srv...
июн 16 09:20:09 pilgrim systemd[1]: tmp.mount: Directory /tmp to mount over is not empty, mounting anyway.
июн 16 09:20:09 pilgrim systemd[1]: Mounting /tmp...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /usr/local...
июн 16 09:20:09 pilgrim systemd[1]: var-cache.mount: Directory /var/cache to mount over is not empty, mounting anyway.
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/cache...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/crash...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/libvirt/images...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/machines...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/mailman...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/mariadb...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/mysql...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/named...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/lib/pgsql...
июн 16 09:20:09 pilgrim systemd[1]: Condition check resulted in Lock Directory being skipped.
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/log...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/opt...
июн 16 09:20:09 pilgrim systemd[1]: Condition check resulted in Runtime Directory being skipped.
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/spool...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /var/tmp...
июн 16 09:20:09 pilgrim systemd[1]: Mounted /.snapshots.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /boot/grub2/i386-pc.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /boot/grub2/x86_64-efi.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /opt.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /srv.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /tmp.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /usr/local.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/cache.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/crash.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/libvirt/images.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/machines.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/mailman.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/mariadb.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/mysql.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/named.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/lib/pgsql.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/opt.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/log.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/spool.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /var/tmp.
июн 16 09:20:09 pilgrim systemd[1]: Mounting /disk2...
июн 16 09:20:09 pilgrim systemd[1]: Mounting /home...
июн 16 09:20:09 pilgrim systemd[1]: Mounted /boot/efi.
июн 16 09:20:09 pilgrim systemd[1]: Condition check resulted in Lock Directory being skipped.
июн 16 09:20:09 pilgrim systemd[1]: Condition check resulted in Runtime Directory being skipped.
июн 16 09:20:09 pilgrim systemd[1]: Mounted /disk2.
июн 16 09:20:10 pilgrim systemd[1]: Mounted /home.
[QUOTE=dcurtisfra;]Where is your system partition?
- You seem to have mounted a Btrfs partition which is more than ½ full on “/var/spool” …
- Is this by chance the System Partition?
If it is, then, it should be mounted on “/” …[/QUOTE]I think this is because of btrfs subvolumes. The /dev/sda3 is mounted on /:
# mount | grep sda3
/dev/sda3 on / type btrfs (rw,relatime,space_cache,subvolid=259,subvol=/@/.snapshots/1/snapshot)
/dev/sda3 on /.snapshots type btrfs (rw,relatime,space_cache,subvolid=258,subvol=/@/.snapshots)
/dev/sda3 on /boot/grub2/i386-pc type btrfs (rw,relatime,space_cache,subvolid=260,subvol=/@/boot/grub2/i386-pc)
/dev/sda3 on /boot/grub2/x86_64-efi type btrfs (rw,relatime,space_cache,subvolid=261,subvol=/@/boot/grub2/x86_64-efi)
/dev/sda3 on /opt type btrfs (rw,relatime,space_cache,subvolid=262,subvol=/@/opt)
/dev/sda3 on /srv type btrfs (rw,relatime,space_cache,subvolid=263,subvol=/@/srv)
/dev/sda3 on /var/cache type btrfs (rw,relatime,space_cache,subvolid=1238,subvol=/@/var/cache)
/dev/sda3 on /tmp type btrfs (rw,relatime,space_cache,subvolid=264,subvol=/@/tmp)
/dev/sda3 on /var/crash type btrfs (rw,relatime,space_cache,subvolid=266,subvol=/@/var/crash)
/dev/sda3 on /var/lib/pgsql type btrfs (rw,relatime,space_cache,subvolid=272,subvol=/@/var/lib/pgsql)
/dev/sda3 on /var/lib/named type btrfs (rw,relatime,space_cache,subvolid=271,subvol=/@/var/lib/named)
/dev/sda3 on /var/lib/mysql type btrfs (rw,relatime,space_cache,subvolid=270,subvol=/@/var/lib/mysql)
/dev/sda3 on /var/lib/mariadb type btrfs (rw,relatime,space_cache,subvolid=269,subvol=/@/var/lib/mariadb)
/dev/sda3 on /var/lib/mailman type btrfs (rw,relatime,space_cache,subvolid=268,subvol=/@/var/lib/mailman)
/dev/sda3 on /var/lib/libvirt/images type btrfs (rw,relatime,space_cache,subvolid=267,subvol=/@/var/lib/libvirt/images)
/dev/sda3 on /var/lib/machines type btrfs (rw,relatime,space_cache,subvolid=1296,subvol=/@/var/lib/machines)
/dev/sda3 on /usr/local type btrfs (rw,relatime,space_cache,subvolid=265,subvol=/@/usr/local)
/dev/sda3 on /var/opt type btrfs (rw,relatime,space_cache,subvolid=274,subvol=/@/var/opt)
/dev/sda3 on /var/log type btrfs (rw,relatime,space_cache,subvolid=273,subvol=/@/var/log)
/dev/sda3 on /var/tmp type btrfs (rw,relatime,space_cache,subvolid=276,subvol=/@/var/tmp)
/dev/sda3 on /var/spool type btrfs (rw,relatime,space_cache,subvolid=275,subvol=/@/var/spool)