Filesystem corruption - hard disk exploded!

[Volker Wysk]

Hi..

That filesystem corruption of mine has quickly expanded. It has expanded to 
the boot partition and the LVM metadata, last. 

I've booted into memtest86+, but have aborted after an hour, in order to let 
it run overnight. But then I couldn't boot the machine any longer. Going into 
rescue mode revealed that the cryptsetup binary (same as before) looks 
corrupt. Also, the volume group wasn't found.

Before that, I've tried to log in to KDE. This failed with a message, that 
some KDE file can't be executed. Seems garbage too.

This corruption seems to expand quickly and appear at a very low level. Such 
as the hard disk itself or the SSD.

Now I've installed Ubuntu 19.04.2 and am in the process of unpacking my 
backup. I have a recent backup, but I've still lost some data. That restore 
takes about 20 hours... Still running.

So far, I haven't seen any signs of corruption in the new 19.04 system.

Bye
Volker