use of EXT4 filesystems in AWS ec2 instances

[daniejstriata]

I've noticed that the ext4 filesystem is not included in any of the latter Linux releases, AMZN2 and AL2022. Was this a choice to deprecate EXT4 in AWS or is it accidently omitted? I only use EXT4 on a very old instances running Centos 7 so I would not have been affected. Should I need to mount the volume on a new AMZN2 or AL2022 host I'll have issues though.

[stewartsmith]

The ext4 file system is included in AL2 and AL2023 releases. Any volume should mount fine. It is possible that the utilities for ext4, namely the e2fsprogs package isn't on the base images though, but it can be easily installed with dnf