ReadyNAS 214: System Volume root useage 90%

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RobW_73 wrote:

Concur. Been reading some other topics. I haven't used it much. I have a Mac -  so using the shell more. But not massively experienced in this area. 

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Well, if you enable ssh on the NAS, you can then connect using terminal.  The command is ssh root@nas-ip-address The root password is the same as the NAS admin password.

From there you can see if the issue is from plex by entering the following:

# mount --bind / /mnt
# cd /mnt
# find . -name chunk*.m4s

If you see those chunk<whatever>.m4s files in the output of the find command, then the issue is plex, and you want to delete them.  You can use cd to navigate to the relevant folders, and then delete these files with the rm command

# rm chunk*.m4s

Be careful on the typing - especially since there is a wildcard (*) in the command.  That lets you delete all the chunk files in a single command.

If you don't find any of these files, then the problem isn't plex - and we need to figure out where the space is going.  Enter

# du -csh /mnt/*

That will give you some idea of the space usage.  copy the results to this thread.

FWIW, on my NAS I see

root@NAS:/mnt# du -csh /mnt/*
0       /mnt/1
0       /mnt/apps
6.4M    /mnt/bin
0       /mnt/boot
0       /mnt/data
24K     /mnt/dev
11M     /mnt/etc
30M     /mnt/frontview
0       /mnt/ftp_ban.tbl
0       /mnt/home
4.0K    /mnt/homes
33M     /mnt/lib
4.0K    /mnt/lib64
0       /mnt/media
0       /mnt/mnt
4.6M    /mnt/opt
0       /mnt/proc
28K     /mnt/root
0       /mnt/run
9.9M    /mnt/sbin
0       /mnt/srv
0       /mnt/sys
0       /mnt/tmp
202M    /mnt/usr
604M    /mnt/var
899M    total

I have a different model, but your results should be similar.

Usually there is just one massive subfolder.  You descend into that with cd, and then repeat the du command.  At some point you are likely to find one folder with just a couple of large files(perhaps just one)  That accounts for the space.  We need to find out what those files are.

ls -alh is one way to see the size of all files in a particular folder, so you can use that in conjunction with the du command.

When done, enter these commands

# cd //
# umount /mnt

This undoes the mount at the beginning.