Auc changed file system without asking

Installing and Using OpenWrt
1

Hello,
I have tried to upgrade my NanoPi R2S from 21.x to 22.03.03 with auc.

I happily have created a backup of the SD-card before starting the process.
The SD was partitioned with 3 partitions, all ext4 filesystems.

Festplatte /dev/sdb: 3,68 GiB, 3951034368 Bytes, 7716864 Sektoren
Festplattenmodell: UHSII uSD Reader
Einheiten: Sektoren von 1 * 512 = 512 Bytes
Sektorgröße (logisch/physikalisch): 512 Bytes / 512 Bytes
E/A-Größe (minimal/optimal): 512 Bytes / 512 Bytes
Festplattenbezeichnungstyp: dos
Festplattenbezeichner: 0x5f692e7d

Gerät      Boot  Anfang    Ende Sektoren Größe Kn Typ
/dev/sdb1  *      65536  131071    65536   32M 83 Linux
/dev/sdb2        131072 4325375  4194304    2G 83 Linux
/dev/sdb3       4325376 7716863  3391488  1,6G 83 Linux

When starting auc via ssh there was a messsage that something with filesystem did not match. But then ssh connection stops.

After a while the system comes up again, but now the system has only 2 different partitions. And filesystem has changed to squashfs.

 root@R2S:/# fdisk -l                                                                                                                                     
Disk /dev/loop0: 92.75 MiB, 97255424 bytes, 189952 sectors                                                                                                
Units: sectors of 1 * 512 = 512 bytes                                                                                                                     
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mmcblk0: 3.68 GiB, 3951034368 bytes, 7716864 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x5452574f

Device         Boot  Start    End Sectors  Size Id Type
/dev/mmcblk0p1 *     65536  98303   32768   16M 83 Linux
/dev/mmcblk0p2      131072 344063  212992  104M 83 Linux

Why this? And how to keep my partition scheme when making an update?

2

this is expected, if you use the combined image, it'll rewrite the partition table, and their sizes.

zcat the ext4 root fs to /dev/mmcblk0p2, and copy the kernel file to /dev/mmcblk0p1, adapt the boot loader.

(the is very high level, I don't own a NanoPi, it's how it's done on x86).

if you'd have a primary and secondary openwrt partition you could do something like

3

Changing partition sizes is one thing, but changing the filesystem too is another. And all of fhis without any "continue?" question :frowning:
Ugly, but I'll have to live with that...

I have tried luci-app-attendendsysupgrade also. This way the generated image resizes the partitions too, but all pakages are in place and it keeps ext4 as filesystem. So I had to resize paartition 1/2 and recreate partition 3 entry only. Far away from good, but much better then "auc"

I decided not to install a dual-boot scenario like I would have done with a x86 too. This because there is special boot-loader required for this rockchip based devices. Using an additional SD Card seems less time consuming to me :wink: