Update d/ch for 2.742.4 release

This fixes GCE shielded VM instances integrity monitoring failures on
focal and later. Our images are built with an empty /boot/grub/grubenv
file, however after the first boot `initrdless_boot_fallback_triggered`
is set to 0. This change in `grubenv` results in integrity monitoring
`lateBootReportEvent` error.

It seems that the only thing that's checking for this `grubenv` variable
is `grub-common.service`, and it is looking specifically for a `1`
value:

  if grub-editenv /boot/grub/grubenv list | grep -q
  initrdless_boot_fallback_triggered=1; then echo "grub:
  GRUB_FORCE_PARTUUID set, initrdless boot paniced, fallback triggered.";
  fi

Unsetting this variable instead of setting it to 0 would prevent issues
with integrity monitoring.

debian/changelog

@@ -1,3 +1,32 @@
+livecd-rootfs (2.742.4) impish; urgency=medium
+
+  * Unset `initrdless_boot_fallback_triggered` in /boot/grub/grubenv instead
+    of setting it to 0 when the fallback is not triggered to prevent integrity
+    monitoring errors on GCE. (LP: #1960564)
+
+ -- Ivan Kapelyukhin <ivan.kapelyukhin@canonical.com>  Mon, 14 Feb 2022 21:24:22 +0100
+
+livecd-rootfs (2.742.3) impish; urgency=medium
+
+  * Add sleep due to e2fsck error in umount_partition. LP: #1960537
+
+ -- Brian Murray <brian@ubuntu.com>  Thu, 10 Feb 2022 15:28:29 -0800
+
+livecd-rootfs (2.742.2) impish; urgency=medium
+
+  * Bump UEFI disk image size for armhf to 3.5 GB (LP: #1953609)
+    Current builds are failing because the disk size is not big enough.
+    This a backport from jammy and upstream livecd-rootfs:ubuntu/master.
+
+ -- Phil Roche <phil.roche@canonical.com>  Wed, 08 Dec 2021 11:24:18 +0000
+
+livecd-rootfs (2.742.1) impish; urgency=medium
+
+  [ Thomas Bechtold ]
+  * magic-proxy: fix exception handling for URLError LP: #1946520
+
+ -- Brian Murray <brian@ubuntu.com>  Thu, 18 Nov 2021 15:17:05 -0800
+
 livecd-rootfs (2.742) impish; urgency=medium
 
   [ Brian Murray ]

live-build/functions

@@ -234,6 +234,8 @@ umount_partition() {
     mount --make-private $mountpoint
     umount $mountpoint
     udevadm settle
+    # workaround for LP: 1960537
+    sleep 30 
 
     if [ -n "${rootfs_dev_mapper}" -a -b "${rootfs_dev_mapper}" ]; then
         # buildd's don't have /etc/mtab symlinked
@@ -1135,7 +1137,7 @@ if [ -n "${have_grubenv}" ]; then
   if [ -n "${initrdfail}" ]; then
     set initrdless_boot_fallback_triggered="${initrdfail}"
   else
-    set initrdless_boot_fallback_triggered=0
+    unset initrdless_boot_fallback_triggered
   fi
   save_env initrdless_boot_fallback_triggered
 fi

live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary

@@ -21,6 +21,11 @@ case ${PROJECT:-} in
         ;;
 esac
 
+if [ "$ARCH" = "armhf" ]; then
+    # bump to 3.5G (3584*1024**2); Since Impish and Jammy armhf need more then the default 2.2G
+    IMAGE_SIZE=3758096384
+fi
+
 # Change image size for preinstalled generic images & all preinstalled riscv64 images
 if [ -n "${SUBARCH:-}" ]; then
     if [ "${SUBARCH:-}" = "generic" ] || [ "$ARCH" = "riscv64" ]; then

magic-proxy

@@ -883,8 +883,10 @@ class ProxyingHTTPRequestHandler(http.server.BaseHTTPRequestHandler):
             self.__send_response(e)
         except urllib.error.URLError as e:
             self.log_message(
-                "urlopen() failed for {} with {}".format(uri, e.reason))
+                "urlopen() failed for {} with {}".format(uri, str(e.reason)))
-            self.send_error(501, e.reason)
+            # URLError.reason can either be a string or another Exception
+            # So do convert it to a string before sending the error (LP: #1946520)
+            self.send_error(501, str(e.reason))
 
 
     def __get_host_path(self):