http://bugzilla.suse.com/show_bug.cgi?id=1140114 Bug ID: 1140114 Summary: transactional-update fails with kernel v5.2-rc4+ Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kubic Assignee: iforster@suse.com Reporter: fvogt@suse.com QA Contact: qa-bugs@suse.de CC: jslaby@suse.com, kubic-bugs@opensuse.org, kukuk@suse.com, rgoldwyn@suse.com Found By: --- Blocker: --- Found by openQA in a staging: https://openqa.opensuse.org/tests/970506#step/transactional_update/9 For creating a chroot for a new snapshot, the upperdir of the current /etc is part of the lowerdir chain for the chroot /etc. This is apparently not supported by upstream overlayfs, as commit 146d62e5a5867fbf84490d82455718bfb10fe824 ("ovl: detect overlapping layers") forbids those:
On mount, the hash table trap entries are used to verify that overlay layers are not overlapping. While at it, we also verify that overlay layers are not overlapping with directories "in-use" by other overlay instances as upperdir/workdir.
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