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corruption crept into some of my files

bomzi

Member
I was looking through some old files and noticed that a few of them are showing signs of corruption.
Not sure how else to describe this situation.

I exported jpgs of these in 2020 and they looked fine then.
But now, there are errors visible as you will be able to see in the attached images.

The files are from a Phase One P45+.

Anyone have any thoughts on this?2020.jpgcurrent.jpg
 

bomzi

Member
Yes I have the raw files and I have backups. What I need to investigate is if the backups also are corrupted because they have been overwritten in the years since I made this photograph (2020). This problems has appeared in 5-6 photos that sit next to each other in the catalogue. I wonder if there is a problem with my hard drive.
 

buildbot

Well-known member
It’s sadly all to easy for this to happen - the backups are probably also affected if you do a straight overwrite and not something like a differential binary back up.

Filesystems like ZFS help catch and correct these errors but far from trivial to setup. I’ve had ~20 files saved by ZFS, it’ll detect and repair errors based on a checksum of the file and parity/mirrored bits stored on another drive in the pool.
 

bomzi

Member
Well, I've checked my backups and they all have the same error. I guess this crept into the file at some point and the backups picked up the change.
 
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