Corrupted Pre-built v18.06.0.rc2 Image for RPi

For Developers
1

Hi.

The pre-built pre-built v18.06.0.rc2 Image for Raspberry Pi is corrupted and cannot be extracted:

https://downloads.openwrt.org/releases/18.06.0-rc2/targets/brcm2708/bcm2710/openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img.gz

The same problem happened when I built the image myself. It seems the release is not useable for RPi.

Bests,
Vahid

2

It contains some trailing signature marker for the sysupgrade command but that should not prevent decompression.

I fetched the image you linked and gunzip my PC reported gzip: openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img.gz: decompression OK, trailing garbage ignored

I was also able to list partitions and loop mount the image on my PC:

jow@jow:/tmp$ fdisk -l openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img
Disk openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img: 284 MiB, 297795584 bytes, 581632 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
openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img1 *     8192  49151   40960   20M  c W95 FAT32 (LBA)
openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img2      57344 581631  524288  256M 83 Linux
jow@jow:/tmp$ mkdir /tmp/x
jow@jow:/tmp$ sudo mount -o loop,offset=$((57344 * 512)) openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img /tmp/x/
[sudo] password for jow: 
jow@jow:/tmp$ ls -lh /tmp/x/
total 60K
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 bin
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 dev
drwxr-xr-x 18 root root 4.0K Jul 15 14:30 etc
drwxr-xr-x 11 root root 4.0K Jul 15 14:30 lib
lrwxrwxrwx  1 root root    3 Jul 15 14:30 lib64 -> lib
drwx------  2 root root 4.0K Jan  1  1970 lost+found
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 mnt
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 overlay
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 proc
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 rom
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 root
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 sbin
drwxr-xr-x  2 root root 4.0K Jul 15 14:30 sys
drwxrwxrwt  2 root root 4.0K Jul 15 14:30 tmp
drwxr-xr-x  7 root root 4.0K Jul 15 14:30 usr
lrwxrwxrwx  1 root root    3 Jul 15 14:30 var -> tmp
drwxr-xr-x  4 root root 4.0K Jul 15 14:30 www
jow@jow:/tmp$

Can you elaborate some more on what exactly is broken?

3

Thanks for your response. Ubuntu Archive Manager cannot extract the file and it just throws a general error message: "An error occurred while extracting files". I tested that on two different machines and it is the same. All the images in this release have the same problem. The previous releases don't have this problem. Anyway, I could decompress it using gunzip in the terminal, though.

Bests,
Vahid

4

May I ask why you try to decompress it in the first place? I think you should be able to feed it to sysupgrade also in compressed form.

5

I decompressed it to write the image on the SD card using dd command. I guess I may be able to do that without decompression, as well.

Bests,
Vahid

6

Ah I understand. Maybe consider something like zcat openwrt-18.06.0-rc2-brcm2708-bcm2710-rpi-3-ext4-sdcard.img.gz | dd of=/dev/sdcard then.

7

Thanks a lot. The problem is definitely solved for me. But I guess if the archive is not de-compressable with GNOME Archive Manager, which it is expected to be, a great number of Linux users may think it is corrupted.

Bests,
Vahid