(I have searched, could not find anything, so posting new topic)
Model: TS-559 Pro II
Getting the following System log event every 2-3 seconds. Have also noticed ramdisk is full (output below). Restarting only offers short-term relief (less than 10 minutes)
QNAP web interface - System Logs
Type Date Time Users Source IP Computer name Content
Error 2026/10/04 18:07:48 System 127.0.0.1 localhost The system is unable to save your settings (file = [/etc/config/uLinux.conf], section = [DHCP Server], field = [End Range], value = [0.0.0.0]) due to insufficient ramdisk space. If restarting the server does not solve the problem please contact support for further assistance.
[/] # df
Filesystem Size Used Available Use% Mounted on
/dev/ramdisk 151.1M 151.1M 0 100% /
tmpfs 64.0M 468.0k 63.5M 1% /tmp
tmpfs 494.4M 24.0k 494.4M 0% /dev/shm
tmpfs 16.0M 0 16.0M 0% /share
/dev/sda4 371.0M 283.8M 87.1M 77% /mnt/ext
/dev/md9 515.5M 145.4M 370.2M 28% /mnt/HDA_ROOT
/dev/sdc3 1.8T 333.8G 1.5T 18% /share/HDC_DATA
/dev/md0 3.6T 600.6G 3.0T 16% /share/MD0_DATA
/dev/md1 5.4T 1020.2G 4.4T 18% /share/MD1_DATA
tmpfs 1.0M 0 1.0M 0% /mnt/rf/nd
OneCD
October 4, 2026, 7:13am
2
Hi and welcome to the forum.
Have you rebooted the NAS yet?
If-not, please do-so now. You may need to force it.
Edit: ah, I see you have done this.
Something is filling that tmpfs. This is usually because:
Something is writing to the admin user’s $HOME, which in QTS is /root
Something is writing to the filesystem root /. This would be OK on a real Linux distro, but can’t be done in QTS.
Post file-listings from each of these locations if you’re unsure what should be there.
Thanks for the prompt reply. I’m really only setting up as shared folders to map from my Windows laptop.
[/] # ls -al /root
drwxr-xr-x 2 admin administ 1024 Oct 4 16:59 ./
drwxr-xr-x 20 admin administ 1024 Oct 4 16:56 ../
lrwxrwxrwx 1 admin administ 6 Jun 18 2024 .BitTornado -> ../tmp/
-rw-r--r-- 1 admin administ 5 Jan 11 2008 .bash_history
-rw-r--r-- 1 admin administ 175 Oct 9 2004 .bash_logout
-rw-r--r-- 1 admin administ 161 Oct 9 2004 .bash_profile
-rw-r--r-- 1 admin administ 1687 Jul 18 2007 .bashrc
-rw-r--r-- 1 admin administ 36 Oct 4 16:54 .buzzer_warnning.conf
-rw-r--r-- 1 admin administ 27 Jan 29 2007 .profile
lrwxrwxrwx 1 admin administ 15 Oct 4 16:54 .ssh -> /etc/config/ssh/
-rw-r--r-- 1 admin administ 923 Oct 5 2026 .vimrc
-rw-r--r-- 1 admin administ 17080320 Oct 4 17:00 backup.txt
-rw-r--r-- 1 admin administ 6526 Jul 11 2007 index_default.html
[/] # ls -al /
drwxr-xr-x 20 admin administ 1024 Oct 4 16:56 ./
drwxr-xr-x 20 admin administ 1024 Oct 4 16:56 ../
-rw-rw-rw- 1 admin administ 26 Oct 4 16:55 SS.log
drwxr-xr-x 2 admin administ 2048 Oct 5 2026 bin/
drwxr-xr-x 8 admin administ 22528 Oct 4 16:54 dev/
drwxr-xr-x 25 admin administ 2048 Oct 4 18:08 etc/
drwxr-xr-x 4 admin administ 1024 Jun 18 2024 home/
drwxr-xr-x 4 admin administ 3072 Oct 4 16:52 lib/
drwxr-xr-x 2 admin administ 1024 May 4 2015 lib64/
lrwxrwxrwx 1 admin administ 11 Jun 18 2024 linuxrc -> bin/busybox\*
drwx------ 2 admin administ 12288 Jun 18 2024 lost+found/
drwxr-xr-x 11 admin administ 1024 Oct 4 16:54 mnt/
drwxr-sr-x 2 admin administ 1024 Jun 18 2024 opt/
lrwxrwxrwx 1 admin administ 19 Jun 18 2024 php.ini -> /etc/config/php.ini
dr-xr-xr-x 237 admin administ 0 Oct 5 2026 proc/
drwxr-xr-x 2 admin administ 1024 Oct 4 16:59 root/
drwxr-xr-x 2 admin administ 1024 Oct 4 16:54 rpc/
drwxr-xr-x 2 admin administ 6144 Oct 4 16:56 sbin/
drwxrwxrwt 32 admin administ 880 Oct 4 16:54 share/
dr-xr-xr-x 12 admin administ 0 Oct 5 2026 sys/
drwxrwxrwx 18 admin administ 2840 Oct 4 18:38 tmp/
drwxr-xr-x 9 admin administ 1024 Oct 4 16:55 usr/
drwxrwxrwx 11 admin administ 1024 Oct 4 18:33 var/
[/] #
OneCD
October 4, 2026, 7:40am
4
Nice work!
OK, in /root you have a ~ 17MB file called backup.txt
It shouldn’t be there. You’ll need to move it somewhere else or delete it.
Thanks. That shouldn’t have been there - I think a environment variable didn’t resolve..
Ramdisk is down to 89% - still seems too close to 100% for comfort?
Filesystem Size Used Available Use% Mounted on
OneCD
October 4, 2026, 7:43am
6
/root is the default $HOME for the admin user, which is also the only user that can SSH in on QTS 4.2.6.
OneCD
October 4, 2026, 7:45am
7
89% is fine for that tmpfs - on a correctly working QNAP NAS.
Brilliant. Predictably, the System Events have also stopped.
Thank so much. Much appreciated.
