initramfs-ostree: Rsync the repo before pulling

It is found that the 'ostree pull' is extremely slow
if the ISO image which provides the remote ostree
repository is served by virtual media. In this case,
the remote location is in the form of a local
directory instead of a URL starting with "http://"
"https://" or "ssh://". To speed this up, we change
to rsync the ostree repository to the true local
file system first, then 'ostree pull' will be used
to create the target repository with the rsynced
repository in the local file system.
The tests shows that the work can be done in about
15 minutes(the size of the ostree repository is about
2.7GB). Without this patch, it takes about 3 hours to
finish the work.

Test Plan:
Pass: 1. On the webUI of the remote management controller,
      select 'Virtual Media', set 'Image URL' to the ISO
      image URL over http, then click 'Insert Media'
      2. Set 'Boot Order' to boot from 'CD/DVD Drive' first
      3. Create ipmi session and reboot the device to start
      a new installation
      4. 'The following rsync command can take a while,
      please be patient' will be printed on the console
      5. The installation will stopped at 'running:rsync ...'
      about 15 minutes
      6. Install successfully
Pass: 1. 'dd' the ISO image on USB device
      2. Deploy with the USB device successfully

Closes-Bug: 2013345

Signed-off-by: Haiqing Bai <haiqing.bai@windriver.com>
Change-Id: I4f42f9c3eabf1473e2ec1796578abe76c2c98e50

ostree/initramfs-ostree/debian/patches/0013-Rsync-the-ostree-repo-before-pulling.patch

@@ -0,0 +1,52 @@
+From 47ff63a93c9911524a2d66a951e85cb2f1afb663 Mon Sep 17 00:00:00 2001
+From: Haiqing Bai <haiqing.bai@windriver.com>
+Date: Mon, 3 Apr 2023 11:07:40 +0800
+Subject: [PATCH] Rsync the ostree repo before pulling
+
+It's extremely slow when ostree pulls
+from servers virtual media,
+e.g.
+- Intel servers: remote ISO via samba
+- HP servers: virtual CD/DVD via http
+
+It takes more than 3 hours while a direct copy takes
+13 minutes, so here we add a step to rsync the ostree
+repository to local disk first, then pull the repo from
+local disk, which takes about 15 minutes.
+
+Signed-off-by: Jackie Huang <Jackie.Huang@windriver.com>
+[ Replaced the 'cp' command with 'rsync -azr' ]
+Signed-off-by: Haiqing Bai <haiqing.bai@windriver.com>
+---
+ init-ostree-install.sh | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/init-ostree-install.sh b/init-ostree-install.sh
+index 0e5b8f3..ffc68a5 100644
+--- a/init-ostree-install.sh
++++ b/init-ostree-install.sh
+@@ -1329,7 +1329,12 @@ mkdir -p /var/volatile/tmp /var/volatile/run
+ lpull=""
+ if [ "$INSTL" != "" ] ; then
+ 	if [ -e /instboot${INSTL#/sysroot/boot/efi} ] ; then
+-		lpull="--url file:///instboot${INSTL#/sysroot/boot/efi}"
++		instl_name=$(basename ${INSTL#/sysroot/boot/efi})
++		cmd="rsync -azr /instboot/${instl_name} /"
++		lpull="--url file:///${instl_name}"
++		echo "The following rsync command can take a while, please be patient"
++		echo running: $cmd
++		$cmd || fatal "Error: failed to rsync ${instl_name}"
+ 	elif [ -e $INSTL ] ; then
+ 		lpull="--url file://$INSTL"
+ 	else
+@@ -1343,6 +1348,7 @@ fi
+ cmd="ostree pull $lpull --repo=${PHYS_SYSROOT}/ostree/repo ${INSTNAME} ${INSTBR}"
+ echo running: $cmd
+ $cmd || fatal "Error: ostree pull failed"
++[ -d /${instl_name} ] && rm -rf /${instl_name}
+ export OSTREE_BOOT_PARTITION="/boot"
+ ostree admin deploy ${kargs_list} --sysroot=${PHYS_SYSROOT} --os=${INSTOS} ${INSTNAME}:${INSTBR} || fatal "Error: ostree deploy failed"
+ 
+-- 
+2.25.1
+

ostree/initramfs-ostree/debian/patches/series

@@ -10,3 +10,4 @@
 0010-Add-Installer-and-Init-Multipath-support.patch
 0011-Add-H-W-Settle-time-to-installer-init.patch
 0012-installer-inc-number-of-digits-in-scripts-names.patch
+0013-Rsync-the-ostree-repo-before-pulling.patch