Error: No space left on device

[maicol07]

Hi,

I have a DSL-AX82U with gnuton's Merlin-DSL fork and starting from last Friday the modem has started to disconnect from wan and throws a lot of error with the common description: "No space left on device". Looking at some older threads I've gathered some commands result and the syslogs. I hope these can be useful to find out how to fix the issue.

Syslogs:

Jun 22 13:38:57 dnsmasq-dhcp[4888]: DHCPREQUEST(br0) 192.168.1.67 a8:7e:ea:10:38 - Pastebin.com

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pastebin.com

Shell commands:

maicol07@DSL-AX82U-4AD0:/tmp/home/root# free -m total used - Pastebin.com

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

pastebin.com

Do you have any idea on what can trigger the errors or how to fix it?
Thanks

 

[eibgrad]

What's with all the dropbear (ssh) connections in the process table? It's flooded w/ these. And all to the router's SSH server (192.168.1.1:22).

 

[ColinTaylor]

OK, so stating the obvious - your router has run out of memory. So the question is "why"?

The most suspicious thing is that you have over 200 concurrent SSH sessions, from the same device (192.168.1.111)! So what are you doing to create these sessions?

 

[SomeWhereOverTheRainBow]

Hi,

I have a DSL-AX82U with gnuton's Merlin-DSL fork and starting from last Friday the modem has started to disconnect from wan and throws a lot of error with the common description: "No space left on device". Looking at some older threads I've gathered some commands result and the syslogs. I hope these can be useful to find out how to fix the issue.

Syslogs: https://pastebin.com/TTEFkKkX
Shell commands: https://pastebin.com/c1uyWmnd

Do you have any idea on what can trigger the errors or how to fix it?
Thanks

[Question] /jffs/.sys/nc/nt_center.db?

what is the purpose of nt_center.db it has my jffs close to full My real question is, is it safe to delete this? 182956 /jffs/.sys/nc/nt_center.db 178.7M /jffs/.sys/nc/nt_center.db

www.snbforums.com

 

[maicol07]

What's with all the dropbear (ssh) connections in the process table? It's flooded w/ these. And all to the router's SSH server (192.168.1.1:22).

OK, so stating the obvious - your router has run out of memory. So the question is "why"?

The most suspicious thing is that you have over 200 concurrent SSH sessions, from the same device (192.168.1.111)! So what are you doing to create these sessions?

These connections comes from the Home Assistant AsusWRT integration. Basically it allows to monitor modem stats.
I can try to disable it and see if something changes

[Question] /jffs/.sys/nc/nt_center.db?

what is the purpose of nt_center.db it has my jffs close to full My real question is, is it safe to delete this? 182956 /jffs/.sys/nc/nt_center.db 178.7M /jffs/.sys/nc/nt_center.db

www.snbforums.com

I think it's not my case. That file is only 488 KB and it doesn't use CPU at all.

 

[SomeWhereOverTheRainBow]

These connections comes from the Home Assistant AsusWRT integration. Basically it allows to monitor modem stats.
I can try to disable it and see if something changes.

I would do that.

 

[maicol07]

I would do that.

Done. Let's see how it goes...

 

[SomeWhereOverTheRainBow]

Done. Let's see how it goes...

It might make it easier to see in your logs what is actually happening beside dropbear leaving its children every few seconds.

 

[maicol07]

Currently these are the logs:

Jun 23 10:00:01 dropbear[1015]: Exit (maicol07) from <192.168.1.2:51898>: Discon - Pastebin.com

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

pastebin.com

 

[maicol07]

Got this again (for a shorter amount of time), but I can't figure out what is failing (log attached)

 

[ColinTaylor]

There isn't any memory errors in your log. The only issue is with your modem or internet connection, not the router.

 

[maicol07]

There isn't any memory errors in you log. The only issue is with your modem or internet connection, not the router.

The router and modem are the same device (DSL-AX82U)

 

[ColinTaylor]

The router and modem are the same device (DSL-AX82U)

In which case I'd say that it's your ISP dropping the connection.