Test: Embedded linux image with e2fsck and return a 2.

[tytso]

Test: Embedded linux image with e2fsck and return a 2.

[tytso]

This isn't a great place for asking questions because I don't really monitor the github issues page.

E2fsck will return 2 if a file system was changed to address file system corruption, and the (root) file system was mounted read-only. That's because the some of the incorrect file system data might have been cached in memory, and if the file system remounted read/write the incorrect the invalid data might be rewritten back to the file system, undoing the work of e2fsck.

Some distributions are now using an initramfs, and checking the root file system before it is mounted. In that case, e2fsck will never return an exit status of 2.