Merge branch 'lp-1953744' into ubuntu/master

debian/changelog

@@ -1,3 +1,12 @@
+livecd-rootfs (2.753) UNRELEASED; urgency=medium
+
+  * Disable compression and "hash table hardening" for journald in the
+    live installer environment as these features make the journal unreadable
+    using the systemd libraries from 20.04 that are included in the subiquity
+    snap. (LP: #1953744)
+
+ -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Tue, 01 Feb 2022 16:10:28 +1300
+
 livecd-rootfs (2.752) jammy; urgency=medium
 
   * Remove references to archive.canonical.com, which is no longer used and

live-build/ubuntu-server/includes.chroot.ubuntu-server-minimal.ubuntu-server.installer/etc/systemd/journald.conf.d/no-zstd.conf

@@ -0,0 +1,4 @@
+# systemd in 22.04+ uses zstd compression by default, which is not understood
+# by the systemd libraries from focal used in the subiquity snap.
+[Journal]
+Compress=false

live-build/ubuntu-server/includes.chroot.ubuntu-server-minimal.ubuntu-server.installer/etc/systemd/system/systemd-journald.service.d/no-hardening.conf

@@ -0,0 +1,4 @@
+# systemd in 22.04+ uses "hash table hardening" by default which is not
+# understood by the systemd libraries from focal used in the subiquity snap.
+[Service]
+Environment="SYSTEMD_JOURNAL_KEYED_HASH=0"