Disable the orphan_file ext4 feature in the canary live environment so that the installed system can be handled by the e2fsck in the extant kernel snap (cf. bug 2025339).

debian/changelog

@@ -3,6 +3,9 @@ livecd-rootfs (2.896) UNRELEASED; urgency=medium
   * live-build/ubuntu/hooks/033-disk-image-uefi.binary: update to point at
     ubuntu-cpc/hooks.d/base/disk-image-uefi-non-cloud.binary, fixing canary
     build.
+  * Disable the orphan_file ext4 feature in the canary live environment so
+    that the installed system can be handled by the e2fsck in the extant
+    kernel snap (cf. bug 2025339).
 
  -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Wed, 05 Jul 2023 10:12:21 +1200
 

live-build/ubuntu/hooks/020-canary-live.chroot_early

@@ -10,7 +10,14 @@ case ${PASS:-} in
         ;;
 esac
 
-# TODO: Make sure this is only executed for canary builds
+# TODO: Make sure this is only executed for canary builds (in a way
+# other then relying on the fact that these hooks are only copied for
+# an ubuntu:canary build)
+
+# As described in LP: #2025339, an initrd built from a jammy userspace
+# (which is what we use for canary builds currently) cannot fsck a
+# mantic root filesystem created with the default options.
+sed -i -e 's/,orphan_file//' /etc/mke2fs.conf
 
 cat <<EOF > /etc/initramfs-tools/conf.d/casperize.conf
 export CASPER_GENERATE_UUID=1