Tags: jazzly/padavan-ng

automount: avoiding the ext4 mounting error "couldn't mount RDWR beca…

…use of unsupported optional features (400)",

which appears due to the fact that the 3.4 kernel does not support the metadata_csum functionality for ext4
solution:
either somehow mount it in read-only mode if an error occurs;
alternatively, disable the metadata_csum option when formatting a disk;
or after formatting, run: tune2fs -O ^metadata_csum /dev/sda1