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This is interesting and I appreciate your investigation! I wonder though if there's a third outcome here - that it's not a bug because the glibc implementation of lchmod() requires /proc to be mounted, and if you don't have /proc mounted then by that definition you have a broken system and lchmod() is not expected to work, so rsync won't work, as a design decision of upstream glibc. I'm not claiming that this is the case, just that it's another case to consider. ** Changed in: rsync (Ubuntu) Status: New => Triaged ** Summary changed: - rsync uses lchmod and fails in Ubuntu >= 20.10 + rsync uses lchmod and fails in Ubuntu >= 20.10 if /proc isn't mounted -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1902109 Title: rsync uses lchmod and fails in Ubuntu >= 20.10 if /proc isn't mounted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rsync/+bug/1902109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs