On Mon, May 16, 2022 at 03:00:14PM +0530, Lakshmipathi.G wrote: > e2fsck 1.46.4 (18-Aug-2021) > Using EXT2FS Library version 1.46.4, 18-Aug-2021 > $ uname -a > Linux db 5.13.0-1022-aws #24~20.04.1-Ubuntu SMP Thu Apr 7 22:14:11 UTC > 2022 aarch64 aarch64 aarch64 GNU/Linux > > Now I did a reboot and the system hangs. It shows the following error > message. Any thoughts on what's going wrong here? thanks! > > ``` > Begin: Will now check root file system ... fsck from util-linux 2.34 > [/usr/sbin/fsck.ext4 (1) -- /dev/nvme0n1p2] fsck.ext4 -a -C0 /dev/nvme0n1p2 > /dev/nvme0n1p2 has unsupported feature(s): fast_commit > e2fsck: Get a newer version of e2fsck! E2fsck 1.46.4 supports fast commit. I'm guessing what's going on is that the version of e2fsck in the initial ramdisk is pre-1.46 and so it didn't support fast commit --- and the root file system is checked before it is mounted using scripts and binaries in the initrd. After installing e2fsprogs, you need to update / recreate the initramfs. How to do this is distro-dependent, but since you are using Ubuntu, try this: sudo update-initramfs -u -k all See the man page for update-initramfs and mkinitramfs for more information. Cheers, - Ted P.S. fast commit is a relatively new feature, and we are still fixing bugs in fast commit. So please be careful before using it in a production system, especially if it is mission- or life- critical. If you really want to use it, you may want to be using newer kernels than 5.13.0, such as 5.15 LTS.