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joelb's avatar
joelb
Aspirant
Nov 13, 2016
Solved

System volume root's usage is 92%.

Hello All,

 

I have been getting the "Volume: System volume root's usage is 92%..." message for a few weeks. It started at about 81%. When it reached 92% I uninstalled all the apps ( I had installed e few over the years. The latest was was Plex media server, which i had not actually used) and it has not gone up since. I am new at this and I do not know much about the file structure and what it should look like. I have enabled SSH on the NAS and installed Putty. It seems that the solution is to delete the large files but I do not know where to start and how to do it. I am on the latest firmware 6.6.0.

 

Any help and guidance would be greatly appreciated.

 

 

Here are a few listings from putty:

 

root@NASSB:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 10M 4.0K 10M 1% /dev
/dev/md0 3.7G 3.4G 88M 98% /
tmpfs 249M 0 249M 0% /dev/shm
tmpfs 249M 576K 248M 1% /run
tmpfs 125M 0 125M 0% /run/lock
tmpfs 249M 0 249M 0% /sys/fs/cgroup
/dev/md127 2.8T 1.3T 1.5T 47% /data
/dev/md127 2.8T 1.3T 1.5T 47% /home
/dev/md127 2.8T 1.3T 1.5T 47% /apps
tmpfs 50M 0 50M 0% /var/replicate/shm
/dev/sdc1 932G 770G 163G 83% /media/USB_HDD_5
tmpfs 4.0K 0 4.0K 0% /data/Joel/snapshot

 

root@NASSB:~# df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
udev 63155 407 62748 1% /dev
/dev/md0 1048576 14758 1033818 2% /
tmpfs 63590 1 63589 1% /dev/shm
tmpfs 63590 559 63031 1% /run
tmpfs 63590 3 63587 1% /run/lock
tmpfs 63590 9 63581 1% /sys/fs/cgroup
/dev/md127 0 0 0 - /data
/dev/md127 0 0 0 - /home
/dev/md127 0 0 0 - /apps
tmpfs 63590 7 63583 1% /var/replicate/shm
/dev/sdc1 0 0 0 - /media/USB_HDD_5
tmpfs 63590 1 63589 1% /data/Joel/snapshot

 

root@NASSB:~# du -csh /var
3.0G /var
3.0G total

 

root@NASSB:~# du -csh /var/*
4.0K /var/agentx
63M /var/backups
113M /var/cache
30M /var/cores
4.0K /var/ftp
2.8G /var/lib
4.0K /var/local
2.1M /var/lock
61M /var/log
4.0K /var/mail
16K /var/netatalk
4.0K /var/opt
1.6M /var/readynasd
8.0K /var/replicate
0 /var/run
20K /var/spool
4.0K /var/tmp
8.0K /var/www
3.0G total
root@NASSB:~#

  • This is now resolved. MySQL and apps that were using it have been removed.

8 Replies

  • mdgm-ntgr's avatar
    mdgm-ntgr
    NETGEAR Employee Retired

    Well what's under /var/lib ?

     

    # du -csh /var/lib/*

    If it's say a large MySQL database it is possible to move the databases to the data volume and use a symlink to the location on the data volume.

    • joelb's avatar
      joelb
      Aspirant

      Yes it is a mysql file that is gorwing. I think it has stopped growing, probably after I uninstalled all the applications. It looks like it is the ibdata1 file that is the problem. Do you know what is stored in this db file? Is it possible to purge the content of the file without ill effect? Or is it better to do as you suggest? 

       

      I'm a newbie but I can follow instructions.

       

      Thank you very much for your help!

       

      root@NASSB:~# du -csh /var/lib/*
      68M /var/lib/apt
      48K /var/lib/connman
      4.0K /var/lib/dbus
      11M /var/lib/dpkg
      4.0K /var/lib/initscripts
      4.0K /var/lib/insserv
      4.0K /var/lib/libuuid
      8.0K /var/lib/logrotate
      8.0K /var/lib/mdadm
      4.0K /var/lib/misc
      2.7G /var/lib/mysql
      16K /var/lib/nfs
      4.0K /var/lib/nut
      28K /var/lib/pam
      32K /var/lib/php5
      4.0K /var/lib/random-seed
      4.0K /var/lib/readyNASVault.version
      4.0K /var/lib/replisync
      2.6M /var/lib/samba
      4.0K /var/lib/snmp
      136K /var/lib/systemd
      124K /var/lib/ucf
      4.0K /var/lib/update-rc.d
      4.0K /var/lib/urandom
      8.0K /var/lib/vim
      2.8G total

       

      root@NASSB:~# ls -csh /var/lib/mysql/
      total 2.7G
      5.0M ib_logfile0 4.0K Syslog 4.0K performance_schema
      2.7G ibdata1 4.0K mysql_upgrade_info 0 debian-5.5.flag
      5.0M ib_logfile1 4.0K mysql

       

       

      • mdgm-ntgr's avatar
        mdgm-ntgr
        NETGEAR Employee Retired

        What's the output of the following?:

        # dpkg -l

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