Jetson Xavier Nx OTA Update And Recover System

[zhuliushun126]

Hi
Recently,I check the OTA Update process.I got a problem(i want to recover the corrupted slot with OTA,but failed).i didn’t find some useful information.please give some help.following is my test enviroment:
Hardware:Jetson Xavier Nx and Nvidia board internal 16G emmc.
Software:R3273
A/B rootfs:Yes(unified bootloader and rootfs a/b is enabled,can NOT inquiry rootfs info!)
the system boot from slot 0,and the slot 1 is bootable.if switch the boot slot with nvbootctrl,the system can boot from slot 1.
Now,the system boot from slot 0,and i destroy the mmcblk0p1(dd if=/dev/zero of=/dev/mmcblk0p1 bs=1M count=1),which is a part of slot 0.then use the reset gpio to reset the device.expect the system boot from slot 0 failed,and then switch to slot 1,and boot from successful.
the reality is the sytem booting from slot 0 hang and reset the device with reset gpio,the system boot from slot 1 successful(the retry count set 1).
when boot from slot 1,and enter the system,i want to run OTA to update the slot 0,but OTA update slot 0 failed.The some log shows as follows:
…
current slot 1
SM:11
Set slot 0 as unbootable and start updating
Satrt running"/mnt/nme/ota_work/nv_ota_rootfs_updater.sh -p /dev/disk/by-partlabel/APP -d /mnt/nvme/ota/ota_work /mnt/nvme/ota_work/system.img
update_rootfs_partition /mnt/nvme/ota_work/system.img /dev/disk/by-partlabel/APP /mnt/nvme/ota_work
validate /mnt/nvme/oat_work/system.img
Mounting rootfs partition /dev/disk/by-partlabel/APP …
backing up files into /mnt/nvme/ota_work
back_up_file /tmp/mnt/boot/extlinux/extlinux.conf /mnt/nvme/ota_work/extlinux.conf.ota_backup
The specified file /tmp/mnt/boot/extlinux/extlinux.conf is not found
Failed to run “back_up_file /tmp/mnt/boot/extlinux/extlinux.conf /mnt/nvme/ota_work/extlinux.conf.ota_backup”
Failed to “back_up_specified_files /mnt/nvme/ota_work /tmp/mnt”
Failed to run “update_rootfs_oartition /mnt/nvme/ota_work/system.img /dev/disk/by-partlabel/APP /mnt/nvme/ota_work”
slot 0 update rootfs failed
…
I use dd command to destroy the app partiton to simulate the filesystem broke down.could the OTA update and recover the bad filesystem?

[JerryChang]

hello zhuliushun126,

@zhuliushun126

Hardware:Jetson Xavier Nx and Nvidia board internal 16G emmc.
Software:R3273

since it’s quite old release version,
could you please try moving to the latest jetson-linux-r3560, or, the linux-tegra-r3275 release version for checking.