[PATCH] isar-installer: Allow multiple INSTALLER_TARGET_DEVICE for NVMe/SATA

[PATCH] isar-installer: Allow multiple INSTALLER_TARGET_DEVICE for NVMe/SATA

['Badrikesh Prusty' via isar-users]

From: badrikesh prusty <badrikesh.prusty@siemens.com>

Older devices typically use SATA SSDs/HDDs (often as /dev/sda), but NVMe drives
are increasingly common in newer devices (often as /dev/nvme0n1). Thus, we need
to build separate isar-image-installer with updated INSTALLER_TARGET_DEVICE for
both storage types.
With these changes, INSTALLER_TARGET_DEVICE can now accept multiple devices
specified as comma or colon separated values (e.g. /dev/sda,/dev/nvme0n1).
The provided devices will be checked to ensure they are block devices and not
the boot device, preventing the isar-image-installer on a USB drive (often
assigned /dev/sda when NVMe is the default storage) from installing the image
to the same device it's booted from.

Signed-off-by: badrikesh prusty <badrikesh.prusty@siemens.com>
---
 kas/image/Kconfig                                         | 4 ++--
 .../files/usr/lib/deploy-image-wic/handle-config.sh       | 8 ++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/kas/image/Kconfig b/kas/image/Kconfig
index d602c369..8193efc5 100644
--- a/kas/image/Kconfig
+++ b/kas/image/Kconfig
@@ -87,9 +87,9 @@ config INSTALLER_TARGET_DEVICE
 	string "Target device to deploy"
 	default "/dev/sda"
 	help
-	  Device to deploy the image onto.
+          Deploy image to this target device. Accepts comma/colon-separated multiple devices; installs on the first available.
 	  Leave this empty to get prompted during installation
-	  Examples: /dev/sda, /dev/nvme0n1
+	  Examples: /dev/sda, /dev/nvme0n1, /dev/sda:/dev/nvme0n1
 
 choice
 	prompt "Overwrite handling"
diff --git a/meta-isar/recipes-installer/deploy-image/files/usr/lib/deploy-image-wic/handle-config.sh b/meta-isar/recipes-installer/deploy-image/files/usr/lib/deploy-image-wic/handle-config.sh
index af37150e..26b2966e 100644
--- a/meta-isar/recipes-installer/deploy-image/files/usr/lib/deploy-image-wic/handle-config.sh
+++ b/meta-isar/recipes-installer/deploy-image/files/usr/lib/deploy-image-wic/handle-config.sh
@@ -31,6 +31,14 @@ for x in $(cat /proc/cmdline); do
         ;;
         installer.target.dev=*)
             installer_target_dev=${x#installer.target.dev=}
+            installer_target_dev_list=$(echo "$installer_target_dev" | sed 's/[,:]/ /g')
+            boot_device=$(lsblk -no PKNAME,MOUNTPOINT | grep -E '/boot| /$' | awk '{print "/dev/"$1}' | uniq)
+            for dev in ${installer_target_dev_list}; do
+                if [ -b "${dev}" ] && [ "${dev}" != "${boot_device}" ]; then
+                    installer_target_dev=${dev}
+                    break
+                fi
+            done
             installer_unattended=true
         ;;
         installer.target.overwrite*)
-- 
2.39.5

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