This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1879196 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1879196 Title: 'shifted' (shiftfs) FS mount became inconsistent with host FS; resolved by dropping caches Status in linux package in Ubuntu: Incomplete Bug description: On Ubuntu 20.04 with linux-image-5.4.0-30-generic from the Canonical Kernel Team's proposed PPA, I ran into the following problem with using a shiftfs 'shifted' ext4 FS mount inside a LXD container. On the host, I created a file (in emacs) that was in no way special (single line text file): 🙂 james@malefic:~/projects/ethq/deb$ stat ethq-0.6.1~git2020517/debian/ethq.install File: ethq-0.6.1~git2020517/debian/ethq.install Size: 15 Blocks: 8 IO Block: 4096 regular file Device: fd01h/64769d Inode: 7085913 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ james) Gid: ( 1000/ james) Access: 2020-05-17 22:48:36.274528130 +0100 Modify: 2020-05-17 22:37:17.676232019 +0100 Change: 2020-05-17 22:37:17.676232019 +0100 Birth: - 🙂 james@malefic:~/projects/ethq/deb$ stat ethq-0.6.1~git2020517/debian/rules But in the container, I saw this: ubuntu@ethq-build:~/ethq/deb/ethq-0.6.1~git2020517$ ls -l debian/ ls: cannot access 'debian/ethq.install': No such file or directory total 20 -rw-rw-r-- 1 ubuntu ubuntu 150 May 17 21:25 changelog -rw-r--r-- 1 ubuntu ubuntu 2 May 17 21:36 compat -rw-rw-r-- 1 ubuntu ubuntu 514 May 17 21:14 control -rw-rw-r-- 1 ubuntu ubuntu 720 May 17 21:20 copyright -????????? ? ? ? ? ? ethq.install -rwxr-xr-x 1 ubuntu ubuntu 30 May 17 21:35 rules ubuntu@ethq-build:~/ethq/deb/ethq-0.6.1~git2020517$ stat debian/ethq.install stat: cannot stat 'debian/ethq.install': No such file or directory ubuntu@ethq-build:~/ethq/deb/ethq-0.6.1~git2020517$ On a suggestion from Stephane Graber, I tried running: echo 3 > /proc/sys/vm/drop_caches Which seemed to resolve the problem: ubuntu@ethq-build:~/ethq/deb/ethq-0.6.1~git2020517$ stat debian/ethq.install File: 'debian/ethq.install' Size: 15 Blocks: 8 IO Block: 4096 regular file Device: fd01h/64769d Inode: 7085913 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ ubuntu) Gid: ( 1000/ ubuntu) Access: 2020-05-17 21:48:36.274528130 +0000 Modify: 2020-05-17 21:37:17.676232019 +0000 Change: 2020-05-17 21:37:17.676232019 +0000 Birth: - ubuntu@ethq-build:~/ethq/deb/ethq-0.6.1~git2020517$ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1879196/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp