Mount guestfs filesystem images readonly (!49) · Merge requests · Reproducible Builds / diffoscope

Daniel Fullmer requested to merge danielfullmer/diffoscope:guestfs-ro into master May 30, 2020

Some filesystem images can't be mounted unless they are mounted readonly. I was working with recent android system.img files and their filesystem now has the EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS flag set, which I understand precludes mounting rw. Running diffoscope on this file would fail with: RuntimeError: mount: mount exited with status 32: mount: /sysroot: wrong fs type, bad option, bad superblock on /dev/sda, missing codepage or helper program, or other error.

Edited May 30, 2020 by Chris Lamb

Mount guestfs filesystem images readonly

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