[Solved] Cannot access cd0 from jail

TrueNAS General
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1

What I want to run is a ripping system to rip audio CDs to the NAS. I did this years ago and this jail still works. I tried to update the packages in the jail and it got confused, so I decided to create a new, clean jail from scratch. I wanted to match the jail with the current kernel running on the NAS (which I thought was the preferred setup). I run TrueNas Core and have for years. My current UI shows as up to date and the kernel is: FreeBSD NAS.lan 13.1-RELEASE-p9 FreeBSD 13.1-RELEASE-p9 n245429-296d095698e TRUENAS amd64
When I tried to create a new jail, all I got was this:

root@NAS:~ # iocage fetch
[0] 13.3-RELEASE
[1] 14.0-RELEASE
[2] 14.1-RELEASE

I tried to get 13.1 release P9, but was unable to get it to download anything.

root@NAS:~ # iocage fetch -r 13.1-RELEASE
13.1-RELEASE was not found!

I read on the old forum a post that suggested that it should be ‘fine’ to use a newer version than the kernel running on the NAS. I felt this was wrong, but went forward anyway. As it is, I cannot get the CD to show up in the jail while following my notes I created years ago (that still allow the cd to show up in the old jail). A similar thread is here: Old ‘cd in a jail’ thread
Are there succinct instructions on how to get the cd0 which shows up in the NAS root to be available in a jail? I have tried copying config info from the old jail to the new jail and am missing something critical as they do not seem to work…
Keith

2

The only releases that are currently supported with CORE jails are the 13.3-RELEASE.

The rest are EOL. So Id try with the 13.3-RELEASE.

3

That is what I have done, but cannot figure out how to get the /dev/cd0 to show up in the jail so I can rip from it.
Do you know how I can access the cdrom from the jail?

4 
iocage set devfs_ruleset=0 <jailname>
iocage restart <jailname>

Be aware that this maps all devices into the jail including /dev/mem and /dev/kmem so processes with root privileges inside the jail can read all of the system and kernel memory including that of processes on the host or in different jails.

So I would not run software that talks to any untrusted networks in such a jail. It will probably be ok for ripping CDs with you as the only user. Jail only used to be able to install additional packages …

5

Amazing, Thank you! That worked perfectly.