Hi, I also experienced this issue with dbus and btrfs and fixed it by simply reinstalling the dbus package.
I also think it's not the first time this happens: I've had a few experiences where different error messages lead me to reinstalling a package, which fixed that particular problem. From my experience this happens particularly in situations where the btrfs file system is under heavy load (this doesn't mean much data is read/written, but that there are are *lots* of open files which are read/written to simultaneously) like upgrading a lot of packages with dpkg. I _guess_ that something roughly like that happens: * dpkg does a lot of small file modifications (creating, changing perms, etc.) * btrfs caches these transactions * other file modifications happen * the original dpkg transactions are delayed over and over again * the machine is rebooted and the cache is lost However just guessing without having looked at the code. So for provoking this bug I would: * create/remove lots of small files * change their permissions and possibly content * maybe do a snapshot * repeat the whole procedure Best Regards Alexander Kurtz
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