Impish is using libcgroup v0.44. Support for cgroup v2 in cgexec, cgcreate, etc was added to libcgroup v2.0 on May 6, 2021 as per the release notes here[1].
I can confirm that cgcreate, cgexec, etc and other tools do not work on Impish, and fail upon execution with the same error that the OP reported. I installed the libcgroup 2.0-2 deb from Jammy found here[2], and cgcreate, cgexec, etc now all work on Impish. [1] https://github.com/libcgroup/libcgroup/releases/tag/v2.0 [2] https://launchpad.net/ubuntu/+source/libcgroup/2.0-2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1945972 Title: cgexec fails on impish, group2 support seems lacking To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libcgroup/+bug/1945972/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs