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    What Is Eating CentOS Disk Space

    IT Discussion
    centos linux storage du df
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    • S
      scottalanmiller
      last edited by

      If the drive is full, this will likely take some time. Because it is sorting the output it will show nothing until it completes.

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      • A
        ajin.c
        last edited by

        Boss.....Still waiting for the output.......

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        • A
          ajin.c
          last edited by

          root@trvbackup [/]# du -smx * | sort -n
          du: cannot access proc/11877/task/11877/fd/4': No such file or directory du: cannot access proc/11877/task/11877/fdinfo/4': No such file or directory
          du: cannot access proc/11877/fd/4': No such file or directory du: cannot access proc/11877/fdinfo/4': No such file or directory
          0 proc
          0 scripts
          0 sys
          1 backup
          1 dev
          1 lost+found
          1 media
          1 mnt
          1 quota.user
          1 razor-agent.log
          1 selinux
          1 srv
          3 tmp
          7 bin
          8 root
          14 sbin
          29 etc
          30 lib64
          38 opt
          43 boot
          234 lib
          5401 usr
          17480 var
          148041 home

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          • S
            scottalanmiller
            last edited by

            This is easy. It's someone storing stuff in their home directory. This is not a system problem but a user problem. Just just the same command but with /home instead of just / and it will produce the list of your offending users.

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            • S
              scottalanmiller
              last edited by

              That is 148GB of user data.

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              • A
                ajin.c
                last edited by

                root@trvbackup [/home]# du -smx * | sort -n

                right ?

                S 2 Replies Last reply Reply Quote 0
                • S
                  scottalanmiller @ajin.c
                  last edited by

                  @ajin.c said:

                  root@trvbackup [/home]# du -smx * | sort -n

                  right ?

                  Correct

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                  • A
                    ajin.c
                    last edited by

                    Hi SAM,

                    since the server was down , i had to install and configure a new one. i will come back as soon as the temperory issues are sorted out .

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                    • S
                      scottalanmiller
                      last edited by

                      In the future, you might want to consider separating the /home directory out into its own filesystem so that end users cannot impact the system in this way. Or using quotas to limit how much damage that they can do.

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                      • S
                        scottalanmiller @ajin.c
                        last edited by

                        @ajin.c said:

                        root@trvbackup [/home]# du -smx * | sort -n

                        right ?

                        I just noticed from you df -h above, /home is already a separate logical volume. That is not the problem. The issue is that your /var is too big. Run this instead...

                        du -smx /var/ 2> /dev/null | sort -n | tail -n 5*

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                        • A
                          ajin.c
                          last edited by

                          Hi Sam,

                          I had mounted a 2 TB hdd on my server, when i had this issue ...
                          @ arround 10 Am IST server got stuck. And i started building new one ...................Removed the HDD and mounted to the new one.

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                          • A
                            ajin.c
                            last edited by

                            As soon as i un mounded the External hdd ., i tried df -h
                            and got the output..........

                            root@trvbackup [~]# df -h
                            Filesystem Size Used Avail Use% Mounted on
                            /dev/mapper/vg_trvbackup-lv_root
                            50G 28G 19G 60% /
                            tmpfs 3.9G 0 3.9G 0% /dev/shm
                            /dev/sda1 485M 53M 407M 12% /boot
                            /dev/mapper/vg_trvbackup-lv_home
                            402G 145G 236G 39% /home
                            /usr/tmpDSK 1.6G 38M 1.5G 3% /tmp

                            That means 19 gb free as soon as i unmounted my External Hdd.

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                            • A
                              ajin.c
                              last edited by

                              And please find the output of this without The external Hdd

                              root@trvbackup [~]# du -smx /var/* 2> /dev/null | sort -n | tail -n 5
                              4 /var/tmp
                              30 /var/cache
                              377 /var/cpanel
                              5323 /var/log
                              17030 /var/lib
                              root@trvbackup [~]#

                              S 1 Reply Last reply Reply Quote 0
                              • S
                                scottalanmiller @ajin.c
                                last edited by

                                @ajin.c said:

                                As soon as i un mounded the External hdd ., i tried df -h
                                and got the output..........

                                root@trvbackup [~]# df -h
                                Filesystem Size Used Avail Use% Mounted on
                                /dev/mapper/vg_trvbackup-lv_root
                                50G 28G 19G 60% /
                                tmpfs 3.9G 0 3.9G 0% /dev/shm
                                /dev/sda1 485M 53M 407M 12% /boot
                                /dev/mapper/vg_trvbackup-lv_home
                                402G 145G 236G 39% /home
                                /usr/tmpDSK 1.6G 38M 1.5G 3% /tmp

                                That means 19 gb free as soon as i unmounted my External Hdd.

                                That would be coincidental. Possibly a process was running and holding open files. Removing the drive might have killed the process releasing the storage for the filesystem to clean up.

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                                • S
                                  scottalanmiller @ajin.c
                                  last edited by

                                  @ajin.c said:

                                  And please find the output of this without The external Hdd

                                  root@trvbackup [~]# du -smx /var/* 2> /dev/null | sort -n | tail -n 5
                                  4 /var/tmp
                                  30 /var/cache
                                  377 /var/cpanel
                                  5323 /var/log
                                  17030 /var/lib
                                  root@trvbackup [~]#

                                  Yes, that supports my theory. It appears to have cleaned up by the time that you ran this the first time.

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                                  • A
                                    ajin.c
                                    last edited by

                                    So Is there any way to figure it out , so that i can take necessary steps for the next time..

                                    S 1 Reply Last reply Reply Quote 0
                                    • S
                                      scottalanmiller @ajin.c
                                      last edited by

                                      @ajin.c said:

                                      So Is there any way to figure it out , so that i can take necessary steps for the next time..

                                      Most important thing is to have monitoring watching disk space on a regular basis so that you can see if it starts to fill up and get an alert. Every business has this issue. Logging or any number of things can cause it to fill up so having a way to keep tabs on it is always important.

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                                      • A
                                        ajin.c
                                        last edited by

                                        Sure , will keep monitoring it regularly.
                                        Thank you very much for your help and support SAM...........

                                        S 1 Reply Last reply Reply Quote 0
                                        • S
                                          scottalanmiller @ajin.c
                                          last edited by

                                          @ajin.c you bet. We are here to help 🙂

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