From 7d4d3c78beace5539b9f033ae1b23ef72fef2e50 Mon Sep 17 00:00:00 2001
From: Mihnea Saracin <Mihnea.Saracin@windriver.com>
Date: Tue, 12 May 2020 18:33:15 +0300
Subject: [PATCH] Persistent backup partition resizing

The persistent backup partition will be resized if
it's detected to be smaller than it should be.

Story: 2007403
Task: 39548
Change-Id: I6809a7c3a8363c8ee7f26bc9c8d61ed97451d29d
Signed-off-by: Mihnea Saracin <Mihnea.Saracin@windriver.com>
---
 bsp-files/kickstarts/pre_disk_aio.cfg        | 19 ++++++++++++++++---
 bsp-files/kickstarts/pre_disk_controller.cfg | 19 ++++++++++++++++---
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/bsp-files/kickstarts/pre_disk_aio.cfg b/bsp-files/kickstarts/pre_disk_aio.cfg
index 56819432..ef304eb1 100755
--- a/bsp-files/kickstarts/pre_disk_aio.cfg
+++ b/bsp-files/kickstarts/pre_disk_aio.cfg
@@ -117,7 +117,10 @@ if [ -d /sys/firmware/efi ] ; then
     BACKUP_PART_NO=1
     START_POINT=1
     END_POINT=$(($START_POINT + $PLATFORM_BACKUP_SIZE))
-    parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
+    BACKUP_END_POINT=$END_POINT
+    if [ $BACKUP_CREATED -eq 0 ] ; then
+        parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
+    fi
 
     START_POINT=$END_POINT
     END_POINT=$(($START_POINT + $EFI_SIZE))
@@ -133,8 +136,10 @@ else
 
     START_POINT=2
     END_POINT=$(($START_POINT + $PLATFORM_BACKUP_SIZE))
-    parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
-
+    BACKUP_END_POINT=$END_POINT
+    if [ $BACKUP_CREATED -eq 0 ] ; then
+        parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
+    fi
     cat<<EOF>>/tmp/part-include
 part biosboot --asprimary --fstype=biosboot --onpart=${ROOTFS_PART_PREFIX}1
 EOF
@@ -153,6 +158,14 @@ END_POINT=$(($START_POINT + $CGCS_PV_SIZE))
 parted -s $ROOTFS_DISK mkpart extended ${START_POINT}MiB ${END_POINT}MiB
 
 if [ $BACKUP_CREATED -ne 0 ] ; then
+    BACKUP_CURRENT_SIZE=$(parted -s $BACKUP_PART unit MiB print | grep $BACKUP_PART | awk '{print $3}' | sed 's/[^C0-9]*//g')
+    if [ $BACKUP_CURRENT_SIZE -lt $PLATFORM_BACKUP_SIZE ] ; then
+        # parted will throw an error about overlapping with the next partition if we don't do this
+        BACKUP_END_POINT=$(($BACKUP_END_POINT - 1)).9
+        parted -s $ROOTFS_DISK resizepart $BACKUP_PART_NO ${BACKUP_END_POINT}MiB
+        e2fsck -p -f $BACKUP_PART
+        resize2fs $BACKUP_PART
+    fi
     cat<<EOF>>/tmp/part-include
 part /opt/platform-backup --fstype=ext4 --asprimary --noformat --onpart=$BACKUP_PART --fsoptions="$ROOTFS_OPTIONS"
 EOF
diff --git a/bsp-files/kickstarts/pre_disk_controller.cfg b/bsp-files/kickstarts/pre_disk_controller.cfg
index deb87e80..6399b782 100755
--- a/bsp-files/kickstarts/pre_disk_controller.cfg
+++ b/bsp-files/kickstarts/pre_disk_controller.cfg
@@ -21,7 +21,10 @@ if [ -d /sys/firmware/efi ] ; then
     BACKUP_PART_NO=1
     START_POINT=1
     END_POINT=$(($START_POINT + $PLATFORM_BACKUP_SIZE))
-    parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
+    BACKUP_END_POINT=$END_POINT
+    if [ $BACKUP_CREATED -eq 0 ] ; then
+        parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
+    fi
 
     START_POINT=$END_POINT
     END_POINT=$(($START_POINT + $EFI_SIZE))
@@ -37,8 +40,10 @@ else
 
     START_POINT=2
     END_POINT=$(($START_POINT + $PLATFORM_BACKUP_SIZE))
-    parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
-
+    BACKUP_END_POINT=$END_POINT
+    if [ $BACKUP_CREATED -eq 0 ] ; then
+        parted -s $ROOTFS_DISK mkpart primary ext4 ${START_POINT}MiB ${END_POINT}MiB
+    fi
     cat<<EOF>>/tmp/part-include
 part biosboot --asprimary --fstype=biosboot --onpart=${ROOTFS_PART_PREFIX}1
 EOF
@@ -56,6 +61,14 @@ START_POINT=$END_POINT
 parted -s $ROOTFS_DISK mkpart extended ${START_POINT}MiB 100%
 
 if [ $BACKUP_CREATED -ne 0 ] ; then
+    BACKUP_CURRENT_SIZE=$(parted -s $BACKUP_PART unit MiB print | grep $BACKUP_PART | awk '{print $3}' | sed 's/[^C0-9]*//g')
+    if [ $BACKUP_CURRENT_SIZE -lt $PLATFORM_BACKUP_SIZE ] ; then
+        # parted will throw an error about overlapping with the next partition if we don't do this
+        BACKUP_END_POINT=$(($BACKUP_END_POINT - 1)).9
+        parted -s $ROOTFS_DISK resizepart $BACKUP_PART_NO ${BACKUP_END_POINT}MiB
+        e2fsck -p -f $BACKUP_PART
+        resize2fs $BACKUP_PART
+    fi
     cat<<EOF>>/tmp/part-include
 part /opt/platform-backup --fstype=ext4 --asprimary --noformat --onpart=$BACKUP_PART --fsoptions="$ROOTFS_OPTIONS"
 EOF