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    Disk is full - DHCP stops working

    Scheduled Pinned Locked Moved General pfSense Questions
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    • C
      Corbin23
      last edited by

      Hello all,

      I fear this may be more of a linux question than PFSense. My web GUI is showing 100% disk usage. /var/squid was full but I have since cleaned it up so that it's down to around 50% but the disk still shows as full. The DHCP server stops working and gives the following error:

      kernel: pid 16494 (dhcpd), uid 1002 inumber 336754 on /: filesystem full
      

      Restarting the DHCP service will get it working for an hour or two before it stops working with the same error message.

      df -h:

      Filesystem     Size    Used   Avail Capacity  Mounted on
      /dev/ad4s1a    2.6G    2.4G    2.2M   100%    /
      devfs          1.0K    1.0K      0B   100%    /dev
      /dev/md0       3.6M     54K    3.3M     2%    /var/run
      /dev/ad6s1      58G     28G     25G    53%    /var/squid
      devfs          1.0K    1.0K      0B   100%    /var/dhcpd/dev
      
      

      du -hd1:

      
      2.0K    ./.snap
       11M    ./boot
      1.2M    ./bin
       20K    ./conf.default
      3.0K    ./dev
      4.3M    ./etc
      4.0K    ./home
       16M    ./kernels
      242K    ./libexec
      6.5M    ./lib
       13M    ./root
      3.5M    ./sbin
      375M    ./usr
       30G    ./var
      842K    ./tmp
      2.0K    ./mnt
       11M    ./cf
      2.0K    ./tftpboot
      177M    ./opt
      2.0K    ./lost+found
       30G    .
      

      So my question: How can I begin to free up some space on /dev/ad4sla mounted on "/"? If that is indeed what needs to be done.  :-\

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      • P
        phil.davis
        last edited by

        Here is my top level dir on a test system:

        $ du -hd1 /
        512B	/.snap
        868K	/bin
         16M	/boot
        2.4M	/cf
        6.5K	/conf.default
        3.0K	/dev
         38K	/dist
         14M	/etc
        4.5K	/home
        512B	/kernels
        7.7M	/lib
        270K	/libexec
        512B	/media
        512B	/mnt
        512B	/proc
        512B	/rescue
        5.1M	/root
        3.7M	/sbin
        512B	/scripts
        512B	/tank
        656K	/tmp
        169M	/usr
         25M	/var
        245M	/
        

        The last entry there is only 245M.
        Have you got some huge file/s in the "/" dir?

        As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
        If I helped you, then help someone else - buy someone a gift from the INF catalog http://secure.inf.org/gifts/usd/

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        • C
          Corbin23
          last edited by

          Okay I guess I got it figured out. In /var/lightsquid was a bunch of report files dating back 2+ years. I had removed the lightsquid package but the reports were still there taking up the space. Now down to ~25% disk use and no more write errors. ;D

          I guess I don't really understand the "filesystem/mounted on:" that is displayed when issuing df.

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          • P
            phil.davis
            last edited by

            I guess I don't really understand the "filesystem/mounted on:" that is displayed when issuing df.

            "Filesystem" is the actual device that contains some dirs and files - an actual partition on a disk (these days "disk" means spinning disk, CF card, SD card, SSD or even memory-resident virtual-disk). That is physical space that can (and does) fill up.
            "Mounted on" is the place in the logical dir tree that the physical "disk" appears - e.g. partition "/dev/ad6s1" files are found in "/var/squid"

            As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
            If I helped you, then help someone else - buy someone a gift from the INF catalog http://secure.inf.org/gifts/usd/

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