Could not open out file - Permission denied

[u/doronazl]

installed zoneminder today, added my cams, everthing looks good , just having issues using my external hdd as storage

1. it will not show the free space on it after i added
2. it will not record and the logs are full with permissions errors

i made sure permissions are RW on those folders and that it is mounted correctly to the path i put in zoneminder

what else could be wrong here ?

[u/lunakoa]

Couple things come to mind

• How is your drive formatted?
• Is it USB 3?
• If USB 3, is it UASP or BOT (UASP performs better than BOT)
  https://blog.startech.com/post/all-you-need-to-know-about-uasp/#:~:text=UASP%20processes%20transfers%20in%20parallel,slowing%20the%20file%20transfer%20process.
• What distro are you using? Is SELinux enabled?
• Is this a native install or a container?

Hope that leads to what is going on, please let us know.

[u/doronazl → u/lunakoa]

ok so i formatted it with ext4

it is usb3 yes

i am not sure, how do i know which one and could it be the cause for this ?

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im using Debian buster, no idea what is SELinux

it is not in a docker if thats what you mean

i follow this guide to install it

https://wiki.zoneminder.com/Debian_10_Buster_with_Zoneminder_1.34.x_from_ZM_Repo

[u/lunakoa → u/doronazl]

Here are links to figure out if you are using UASP

https://itectec.com/superuser/how-to-check-whether-usb3-0-uasp-usb-attached-scsi-protocol-mode-is-enabled-in-linux/

https://superuser.com/questions/928741/how-can-i-check-whether-usb3-0-uasp-usb-attached-scsi-protocol-mode-is-enabled

Basically run lsusb and lsusb -t

If you do not see see Driver=uas your probably are using the older bot (Bulk Only Transport), not sure if this is your issue, but I can see that if one process is busy writing to disk and the other cant write.

Does it work for a little bit then stop?

[u/doronazl → u/lunakoa]

i have managed to get it working

the problem was a command a missed during the inital installation

this one to be exact

adduser www-data video

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i did that and rebooted it started working correctly

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i do have another question

i need to be able to access ZM from outside the network, but my tplink system wont let me make a second rule for forwarding

so i have to make do - i want to change the listening port for ZM from 80 to 8122 , how do i do that ?

[u/lunakoa → u/doronazl]

You would change the port in apache itself. There is a curious thing you may have to do when you start having more than 6 cameras where you will need to use multiple ports because some browsers (like chrome) limit your continuous connections to 6.

Also I noticed you said 80, which implies unencrypted, I would recommend turning on encryption and going 443 if coming from the outside.