On Sat, Oct 17, 2020 at 12:20 AM Konstantin Olchanski
<[log in to unmask]> wrote:
>
> > >
> > > Is it "too hard" to provide a solution for the OP and for myself? How come
> > > RHEL/SL/CentOS-8 does not come preinstalled with a package
> > > to "boot an SL3/SL4/SL5/RHEL6/RHEL7 VM image now!". (Yes, we still have
> > > hardware that required an m68k crosscompiler that runs on SL4. We even have
> > > a physical machine for this, a dual 500 MHz Pentium-II tower).
> >
> > Yes it's kind of sad. However, containers have been mentioned in this thread already, and they do scratch a lot of those itches in a very elegant and cheap way.
> >
>
> If you know the magic incantation to boot old SL/RHEL images (tarballs or rsync's)
> in a container on RHEL 7 or 8 or on Ubuntu LTS 20.04, or if you can point me to such incantations,
> I would greatly appreciate it!

Docker images can be tricker to make compatible with contemporary
kernels. There are many obsolete operating system docker images at
https://urldefense.proofpoint.com/v2/url?u=https-3A__hub.docker.com_&d=DwIBaQ&c=gRgGjJ3BkIsb5y6s49QqsA&r=gd8BzeSQcySVxr0gDWSEbN-P-pgDXkdyCtaMqdCgPPdW1cyL5RIpaIYrCn8C5x2A&m=pqytTaVX8WEw9DNPzmnGOBIWFcfkY7NAa3R93kPxUGw&s=NGv7g3MUezK5H4P93RVRWw3vnPROlst4abulCpyR8-A&e= .

The "incantation" sepends, once again, on your specific needs. If
you've custom hardware for which no modern drivers exist, well, it's a
lot of work. But there are plenty of CentOS 5 and CentOS 6 sand 7
images at https://urldefense.proofpoint.com/v2/url?u=https-3A__hub.docker.com_&d=DwIBaQ&c=gRgGjJ3BkIsb5y6s49QqsA&r=gd8BzeSQcySVxr0gDWSEbN-P-pgDXkdyCtaMqdCgPPdW1cyL5RIpaIYrCn8C5x2A&m=pqytTaVX8WEw9DNPzmnGOBIWFcfkY7NAa3R93kPxUGw&s=NGv7g3MUezK5H4P93RVRWw3vnPROlst4abulCpyR8-A&e= . Not as many scientific linux
images. but it's not clear you have any fundamental SL requirement.


> I am sure I am capable of figuring it out myself, this task has been roughly
> in the middle of my to-do list for the last 2-3 years.
>
> Thanks in advance!
>
> --
> Konstantin Olchanski
> Data Acquisition Systems: The Bytes Must Flow!
> Email: olchansk-at-triumf-dot-ca
> Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada