On Wed, Feb 08, 2023 at 09:43:19AM -0500, Stephen Gallagher wrote: > On Wed, Feb 8, 2023 at 9:35 AM Daniel P. Berrangé <berrange@xxxxxxxxxx> wrote: > ... > > > Checked with the team and I'm told 32-bit containers on 64-bit arch > > > should not be impacted. > > > > More generally podman can run containers of foreign architectures using > > qemu-user emulation, albeit with an obvious speed penalty. Still this > > has been useful for testing issues on non-x86_64 arches where hardware > > access is hard to come by. > > Hold up, this is a really useful tip buried in this thread. Is there a > good howto or example of how to do this? This deserves a Fedora > Magazine or CommBlog article! AFAIR, assuming you have 'qemu-user-static-XXXX' RPM installed for the arch you need (which registers the binfmt handlers at boot), there is not much more to it than passing '--arch $NAME' to 'podman run' e.g. on my current x86_64 F37 host I can do $ podman run -it --arch s390x fedora:rawhide [root@89b49bd5fefd /]# uname -a Linux 89b49bd5fefd 6.0.8-300.fc37.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Nov 11 15:09:04 UTC 2022 s390x GNU/Linux [root@89b49bd5fefd /]# uname -m s390x one caveat is that if you later run without --arch, I've seen it remember pick the foreign arch container that's already downloaded, instead of fetching the native arch container. Also qemu-user emulation isn't perfect, so if you hit wierd inexplicable behaviour, QEMU upstream will welcome bug reports... With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
