After upgrading to linux-libre 4.20, and again tested with 4.20.3, an aarch64 system failed to boot (using 4.19.10 worked fine):
[ 3.692351] device-mapper: ioctl: 4.39.0-ioctl (2018-04-03) initialised: dm-de...@redhat.com ext2fs_check_if_mount: Can't check if filesystem is mounted due to missing mtab file while determining whether /dev/sda6 is mounted. /dev/sda6: clean, 596262/6553600 files, 7663147/26214400 blocks [ 3.948786] EXT4-fs (sda6): Cannot load crc32c driver. ERROR: In procedure mount: In procedure mount: No such file or directory Entering a new prompt. Type `,bt' for a backtrace or `,q' to continue. GNU Guile 2.2.4 Copyright (C) 1995-2017 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. scheme@(guile-user)> Workaround or fix was to add to config.scm: (initrd (append (list "crc32c_generic" ... ) %base-initrd-modules)) 4.19.10 and earlier worked fine without this addition; as far as I can see the relevent kernel configurations are all present; but some behavior changed with the ext4 driver; Is the initrd no longer including soft module dependencies? (e.g. for optional ext4 features) This seems similar to Debian bug: https://bugs.debian.org/819725 live well, vagrant
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