SOLVED Does Incredpbx 02-05-2018 for Raspi need swap file?

[atibs1]

Hi,
I am preparing for installation at a customers location incredpbx 02-05-2018 for Raspi on a Pi 3B and in my web gui on the dashboard it is showing me a warning that "No Swap" is found. Message appears as:

"The swap space of your system is too low (102396 KB). You should have at least 200000 KB of swap space. This should be fixed as soon as possible. Once fixed issue a reload to remove this message"

Does this implimentation require a swap file or does it have enough memory to do without the swap file? Does anyone else encounter this error message? I expanded the card and pbxstatus shows 25gb and have rebooted the system multiple times.

Thanks,
Drew

 

[dicko]

You probably don't need swap space for a typical Raspi with a couple of phones, if you want to, then you should make it in /dev/shm, if you make it in the sd card, then expect a complete crash between the time you do that and some time in the future. The trick to using Raspi's is only write the absolutely critiacl data to the real file system, all logs and swap needs to be in ephemeral file space.

 

[jerrm]

I haven't FPBX 13 on the Pi. Is this a FreePBX GUI generated message? If so, whoever thought the warning belongs there should be shot.

If the warning can't be disabled, just increase the size of the swap to 200M. Edit /etc/dphys-swapfile - change the value of "CONF_SWAPSIZE" to 202 and reboot.
​

@dicko is correct that you probably don't really need swap at all, but if FPBX is insisting I would not put it in /dev/shm, that's just wasting 200MB of ram. The system will swap very little (if any) in routine use. If it looks like it is wanting to swap, change the swappiness value to 0 or 1. If swap usage becomes an issue, then an RPi is probably not the best platform, at least not with SD based storage.

 

[dicko]

That's the lovely bit about the shm it's 'shared memory' and if you dont use swap it wont either if you do then it won't 'wear out' your sd and your system is less likely to lockup. , if you don't care about the warnings, ignore them, don't do anything but then a rougue process can lock you up and if you pull the plug then . . . .

 

[atibs1]

Thank you for your insights jerrm and dicko. Error message is freepbx generated, appears in top left of dashboard under "system overview" I setup the second identical backup unit, following Ward instructions to the T, re downloading the source iso image, and got the exact same error message in the second unit. Have been deploying raspi's for years and they have always been bullet proof. Has anyone else had this same error message and has it effected reliability?

incredible pbx 02-05-2018 for Raspberry Pi 3B. Asterisk 13.19.0 + Gui ver. 13.0.120.10 running on raspberri pi 3B

 

[SMTC]

I hate looking at (and trying to ignore) error messages). So what is the verdict to do here? Just turning up new RASPI with GVSIP and that error is the first greeting on the Admin GUI, so what up @wardmundy ?

 

[wardmundy]

Did you try what @jerrm suggested??

If the warning can't be disabled, just increase the size of the swap to 200M. Edit /etc/dphys-swapfile - change the value of "CONF_SWAPSIZE" to 202 and reboot.

 

[JoeOIVOV]

This is the 2 commands to fix this.

sed -i 's|100|200|g' /etc/dphys-swapfile
/etc/init.d/dphys-swapfile restart

 

[patrick0525]

This is the 2 commands to fix this.

sed -i 's|100|202|g' /etc/dphys-swapfile
/etc/init.d/dphys-swapfile restart

I did this and /etc/dphys-swapfile "CONF_SWAPSIZE" points to 202 and did a reboot.
But the low swap message still appears? Why?

I also did the following:
root@incrediblepbx:~# cat /proc/meminfo | grep -i "free"
MemFree: 624172 kB
SwapFree: 206844 kB
CmaFree: 6800 kB

 

[JoeOIVOV]

Did you clear the error by clicking the little x on the upper right corner of the error itself, an it came back?

 

[patrick0525]

Did you clear the error by clicking the little x on the upper right corner of the error itself, an it came back?

I don't see little x.

 

[JoeOIVOV]

Click the - sorry I thought it was an x

 

[patrick0525]

Click the - sorry I thought it was an x


View attachment 2197

I have been clicking on it and it still reappears whenI dod a refresh.

 

[JoeOIVOV]

I have been clicking on it and it still reappears whenI dod a refresh.

Well, before you clicked it. It said 5 days...

If it returns then rerun these commands.That's all... this does fix the error.

sed -i 's|100|200|g' /etc/dphys-swapfile
/etc/init.d/dphys-swapfile restart

Inspect /etc/dphys-swapfile to ensure it says 200 or 202 instead of 100 for size

Run

/etc/init.d/dphys-swapfile restart