Description of problem: The partition format in Fedora-Workstation-26-1.3.aarch64.raw.xz cannot be processed by fedora-arm-installer-1.99.16-1.fc25.noarch, so the media preparation of uSDHC fails.


Version-Release number of selected component (if applicable):
fedora-arm-installer-1.99.16-1.fc25.noarch

How reproducible: every time


Steps to Reproduce:
1. fedora-arm-image-installer --image=Fedora-Workstation-26-1.3.aarch64.raw.xz --target=rpi3 --media=/dev/sdh --selinux=OFF --norootpass --resizefs --addconsole
2.
3.

Actual results:
Two instances of:
    /dev/sdh4: Failed to resize partition #4.

complete Terminal log: 
=====================================================
= Selected Image:                                 
= Fedora-Workstation-26-1.3.aarch64.raw.xz
= Selected Media : /dev/sdh
= U-Boot Target : rpi3
= SELINUX = OFF
= Root Password will be removed.
= Root partition will be resized
= Console for rpi3 will be added.
=====================================================
 
*****************************************************
*****************************************************
******** WARNING! ALL DATA WILL BE DESTROYED ********
*****************************************************
*****************************************************
 
 Type 'YES' to proceed, anything else to exit now 
 
= Proceed? YES
= Writing: 
= Fedora-Workstation-26-1.3.aarch64.raw.xz 
= To: /dev/sdh ....
0+961139 records in
0+961139 records out
8589934592 bytes (8.6 GB, 8.0 GiB) copied, 471.943 s, 18.2 MB/s
= Writing image complete!
= Resizing /dev/sdh ....
Checking that no-one is using this disk right now ... OK

Disk /dev/sdh: 29.6 GiB, 31724666880 bytes, 61962240 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: 0x79a4cfef

Old situation:

Device     Boot   Start      End  Sectors  Size Id Type
/dev/sdh1  *       2048   411647   409600  200M  6 FAT16
/dev/sdh2        411648  2508799  2097152    1G 83 Linux
/dev/sdh3       2508800  4188159  1679360  820M 82 Linux swap / Solaris
/dev/sdh4       4188160 16777215 12589056    6G  5 Extended
/dev/sdh5       4190208 16777215 12587008    6G 83 Linux

/dev/sdh4: Failed to resize partition #4.
Leaving.

Checking that no-one is using this disk right now ... OK

Disk /dev/sdh: 29.6 GiB, 31724666880 bytes, 61962240 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: 0x79a4cfef

Old situation:

Device     Boot   Start      End  Sectors  Size Id Type
/dev/sdh1  *       2048   411647   409600  200M  6 FAT16
/dev/sdh2        411648  2508799  2097152    1G 83 Linux
/dev/sdh3       2508800  4188159  1679360  820M 82 Linux swap / Solaris
/dev/sdh4       4188160 16777215 12589056    6G  5 Extended
/dev/sdh5       4190208 16777215 12587008    6G 83 Linux

/dev/sdh4: Failed to resize partition #4.
Leaving.

e2fsck 1.43.3 (04-Sep-2016)
fsck.ext4: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdh4
Could this be a zero-length partition?
resize2fs 1.43.3 (04-Sep-2016)
resize2fs: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdh4
Couldn't find valid filesystem superblock.
= Turning SELinux off ...
sed: can't read /tmp/boot/extlinux/extlinux.conf: No such file or directory
= Removing the root password.
sed: can't read /tmp/root/etc/passwd: No such file or directory
= No U-Boot will be installed.

= Installation Complete! Insert into the rpi3 and boot.
==============================================================================


Expected results: No failure.


Additional info: The actual image layout is:
=====
# parted /dev/sdh
GNU Parted 3.2
Using /dev/sdh
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) unit MiB                                                         
(parted) p                                                                
Model:  Multi-Reader -3 (scsi)
Disk /dev/sdh: 30255MiB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start    End      Size     Type      File system     Flags
 1      1.00MiB  201MiB   200MiB   primary   fat16           boot
 2      201MiB   1225MiB  1024MiB  primary   ext4
 3      1225MiB  2045MiB  820MiB   primary   linux-swap(v1)
 4      2045MiB  8192MiB  6147MiB  extended
 5      2046MiB  8192MiB  6146MiB  logical   ext4
=====
where the root partition is #5; but fedora-arm-image-installer expects root as partition #4, and cannot cope.



The bug is in this code from /usr/bin/fedora-arm-image-installer,
which does not recognized that partition #4 is the Extended partition,
and that the root partition actually is partition #5:
=====
# check to see how many partitions on the image
partprobe "$MEDIA"
sleep 1
case $MEDIA in
        "/dev/mmcblk"*)
                if [ -e "$MEDIA"p4 ]; then
                        export FIRMPART="${MEDIA}p1"
                        BOOTPART="${MEDIA}p2"
                        ROOTPART="${MEDIA}p4"
                        PARTNUM=4
                else
                        BOOTPART="${MEDIA}p1"
                        ROOTPART="${MEDIA}p3"
                        PARTNUM=3
                fi
                ;;
        *)
                if [ -e "$MEDIA"4 ]; then     ####  WRONG
                        export FIRMPART="${MEDIA}1"
                        BOOTPART="${MEDIA}2"
                        ROOTPART="${MEDIA}4"
                        PARTNUM=4
                else
                        BOOTPART="${MEDIA}1"
                        ROOTPART="${MEDIA}3"
                        PARTNUM=3
                fi
                ;;
esac

=====