Suggestions for scenarios for failed system update

Good day friends!

I’ve implemented a custom update module for system updates due to limitations in my setup.
Now I’m testing scenarios for a failed update to test my module.
So far I’ve tested this scenarios I could recover from
- Interrupt download (ArtifactDownload)
- Interrupt installation (ArtifactInstall)
- Corrupted .ext4 was installed
I write an image.ext4 from artifact.mender with ddrescue tool to the B partition.

Which other scenarios could I encounter?

Which test could I perform in ArtifactCommit phase to make sure my OS is working properly?

After I performed my first system update I see the kernel messages regarding my data partition. It happens consistently around 300s after boot.

EXT4-fs error (device mmcblk1p3): ext4_mb_generate_buddy:802: group0, block bitmap and bg desciptor inconsistent: 13761 vs 13762 free clusters
EXT4-fs (mmcblk0p3): error count since last fsck: 12
EXT4-fs (mmcblk0p3): initial error at time 1690279206: ext4_mb_generate_buddy:802
EXT4-fs (mmcblk0p3): last error at time 1690279206: ext4_mb_generate_buddy:802

System seems to run fine.

Thanks in advanced!