ogra@styx:~/all-snaps/arm64$ sudo ../ubuntu-device-flash core rolling --channel edge --os ubuntu-core --kernel canonical-snapdragon-linux --gadget canonical-dragon -o test.img
Determining gadget configuration
744.00 KB / 744.00 KB [===============================================================================================================] 100.00 % 2.84 MB/s 0
Parallel unsquashfs: Using 4 processors
13 inodes (35 blocks) to write

/tmp/gadget289823887/gadget/fake-gadget/1.0-fake
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/README
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/gpt.bin
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/hyp.mbn
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/meta
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/meta/icon.png
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/meta/snap.yaml
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/rpm.mbn
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/sbl1.mbn
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/sd_appsboot.mbn
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/sec.dat
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/tz.mbn
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/u-boot.img
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/uboot.env
/tmp/gadget289823887/gadget/fake-gadget/1.0-fake/uboot.env.in

created 13 files
created 2 directories
created 0 symlinks
created 0 devices
created 0 fifos

46.32 MB / 46.32 MB [================================================================================================================] 100.00 % 4.87 MB/s 9s
Installing canonical-dragon
744.00 KB / 744.00 KB [===============================================================================================================] 100.00 % 3.18 MB/s 0
Installing canonical-snapdragon-linux
105.54 MB / 105.54 MB [=============================================================================================================] 100.00 % 3.19 MB/s 33s
Installing ubuntu-core
46.32 MB / 46.32 MB [================================================================================================================] 100.00 % 5.32 MB/s 8s
+++++++++++++++++++++++ [/tmp/diskimage974520729/system/etc/systemd/system/snap-canonical\x2ddragon-4.mount /tmp/diskimage974520729/system/etc/systemd/system/snap-canonical\x2dsnapdragon\x2dlinux-3.mount /tmp/diskimage974520729/system/etc/systemd/system/snap-ubuntu\x2dcore-92.mount]
enabling %s snap-canonical\x2ddragon-4.mount
enabling %s snap-canonical\x2dsnapdragon\x2dlinux-3.mount
enabling %s snap-ubuntu\x2dcore-92.mount
New image complete
Summary:
 Output: test.img
 Architecture: arm64
 Channel: edge
 Version: 0
ogra@styx:~/all-snaps/arm64$