Thanks for digging up this additional information. I'll investigate further. While I do that, the v4.19-rc1 kernel is now out. It might be worthwhile to give that one a go, and see if the fix was already committed to mainline:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc1/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1784665 Title: mkfs.ext4 over /dev/bcache0 hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784665/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
