It looks like items are in rare cases being removed from the export cache's hash table without being removed from the queue. Once they are removed from the hash table, no downcall can complete the request, because the item can't be looked up in the hash table, leaving the item orphaned, along with its reference to the filesystem we are trying to unmount. It looks like this has already been fixed upstream in https://github.com/torvalds/linux/commit/4ecd55ea074217473f94cfee21bb72864d39f8d7, and that commit has been pulled into an upcoming Ubuntu kernel release.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1832384 Title: Unable to unmount apparently unused filesystem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1832384/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
