Hello, from time to time i am having the next issue when restarting the services: systemctl restart apache2.service php-fpm.service Failed to restart apache2.service: Unit var.mount is masked. Failed to restart php-fpm.service: Unit tmp.mount is masked. now the status of masked services systemctl status var.mount tmp.mount ● var.mount - /var Loaded: loaded (file is masked) Active: active (mounted) since Fri 2021-05-07 10:03:52 -05; 28min ago Where: /var What: /dev/mapper/system-root Docs: man:fstab(5) man:systemd-fstab-generator(8) Tasks: 0 (limit: 4915) CPU: 1ms CGroup: /system.slice/var.mount May 07 10:03:52 localhost systemd[1]: Mounting /var... May 07 10:03:52 localhost systemd[1]: Mounted /var. ● tmp.mount - Temporary Directory (/tmp) Loaded: loaded (file is masked) Active: active (mounted) since Fri 2021-05-07 10:03:52 -05; 28min ago Where: /tmp What: tmpfs Docs: https://systemd.io/TEMPORARY_DIRECTORIES man:file-hierarchy(7) https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems Tasks: 0 (limit: 4915) CPU: 4ms CGroup: /system.slice/tmp.mount this is the fstab: /dev/system/root / btrfs defaults 0 0 /dev/system/root /.snapshots btrfs subvol=/@/.snapshots 0 0 /dev/system/root /var btrfs subvol=/@/var 0 0 /dev/system/root /usr/local btrfs subvol=/@/usr/local 0 0 /dev/system/root /srv btrfs subvol=/@/srv 0 0 /dev/system/root /root btrfs subvol=/@/root 0 0 /dev/system/root /opt btrfs subvol=/@/opt 0 0 /dev/system/root /home btrfs subvol=/@/home 0 0 /dev/system/root /boot/grub2/x86_64-efi btrfs subvol=/@/boot/grub2/x86_64-efi 0 0 /dev/system/root /boot/grub2/i386-pc btrfs subvol=/@/boot/grub2/i386-pc 0 0 UUID=3510-7E2E /boot/efi vfat utf8 0 2 /dev/system/noe /opt/noe btrfs defaults 0 0 /dev/system/root /snap btrfs subvol=@/snap 0 0 /dev/system/kriss /opt/kriss btrfs defaults the only solution i found is restarting the whole server