ReadyNAS 314 System volume root's usage is 83%

[shaf4343]

hi, 

i got the error System volume root's usage is 83%. This condition should not occur under normal conditions. Contact technical support. 

and now my NAS is degraded and some of the files are only few kbs. i have tried upgrading firmware to 6.10.3 but no luck. i'm not running any applications either.

appreciate any help. 

df -h
Filesystem Size Used Avail Use% Mounted on
udev 10M 4.0K 10M 1% /dev
/dev/md0 4.0G 3.3G 384M 90% /
tmpfs 993M 0 993M 0% /dev/shm
tmpfs 993M 3.6M 989M 1% /run
tmpfs 497M 1.4M 495M 1% /run/lock
tmpfs 993M 0 993M 0% /sys/fs/cgroup
/dev/md127 5.5T 4.6T 910G 84% /data
/dev/md127 5.5T 4.6T 910G 84% /apps
/dev/md127 5.5T 4.6T 910G 84% /home

----

du -xhd1 /
7.4M /bin
0 /boot
12M /etc
34M /lib
4.0K /lib64
0 /media
0 /mnt
4.6M /opt
20K /root
12M /sbin
0 /selinux
0 /srv
0 /tmp
438M /usr
1.5G /var
254M /rsyslog
31M /frontview
2.3G /

[JohnCM_S]

Hi shaf4343,

Welcome to the Community!

The OS partition of your NAS is almost full which is why you are getting that error message. Updating the firmware of the NAS will not fix that issue.

Fixing this issue requires to access the NAS via SSH and find the files or folders that taking up space in the OS partition (/dev/md0). If you are not comfortable in accessing the NAS via SSH, it will be best to contact the NETGEAR support team so they can assist you with this one. You may open a support ticket by logging in to my.netgear.com.

Regards,

[StephenB]

What apps do you have installed?

[shaf4343]

i can access via ssh, what the files i can delete from OS parition.

thanks.

[shaf4343]

hi stephenB,

i dont have any apps installed.

[StephenB]

---

@shaf4343 wrote:

i dont have any apps installed.

---

It looks like you used to have some installed, since you do have some folders that aren't normally present.  What is the history?

Knowing what can be deleted requires some familiarity with the NAS, and it's not something that can be easily sorted out here.  You'd basically have to post results of various subfolders, and hope people here will give you the comparison info in their own NAS.

The fastest way to solve the problem is to use paid Netgear support via my.netgear.com.  A brute-force way is to do a factory reset, and restore the NAS from a backup.

Manually cleaning the NAS root partition does have some risk, so you ought to begin by having a backup anyway.

FWIW, in my own NAS I see this:

root@NAS:~# du -xhd1 /
6.4M    /bin
0       /boot
11M     /etc
33M     /lib
4.0K    /lib64
0       /media
4.6M    /opt
40K     /root
11M     /sbin
0       /srv
32K     /tmp
273M    /usr
610M    /var
0       /mnt
31M     /frontview
978M    /

I'm not sure how you obtained your directory dump, but one thing that is clear is that it doesn't show 83% full. It adds up to 2.3G, which is only 57% full.  That is more than it should be, but not dangerously full.

One factor here is that the root does contain mount points, and files stored "under" those mount points won't be seen with that command.  The way to see everything is to temporarily re-mount the root.  With my own NAS:

root@NAS:~# mount --bind / /mnt
root@NAS:~# du -xhd1 /mnt
6.4M    /mnt/bin
0       /mnt/boot
24K     /mnt/dev
11M     /mnt/etc
0       /mnt/home
33M     /mnt/lib
4.0K    /mnt/lib64
0       /mnt/media
4.6M    /mnt/opt
0       /mnt/proc
40K     /mnt/root
0       /mnt/run
11M     /mnt/sbin
0       /mnt/srv
0       /mnt/sys
32K     /mnt/tmp
273M    /mnt/usr
610M    /mnt/var
0       /mnt/mnt
0       /mnt/data
0       /mnt/apps
31M     /mnt/frontview
978M    /mnt

As you can see, the remounted root shows several folders that aren't present in the earlier command.  

When you are done, you can dismount using

root@NAS:~# cd //
root@NAS:~# umount /mnt