gedakc wrote: ↑Fri Mar 24, 2023 7:46 pm
It might be worth running an fsck on the drive while it is offline. Of course that would not necessarily fix internal database corruption. For that it might be good to run the optimize_mythdb.pl script.
So I ran a full fsck on the SSD (took 7.5 hours, as the only convenient way to do it was attach it to a USB2 port on an old laptop).
I was kind of expecting it to find nothing, because apart from the pixelation on recordings, the system had been behaving absolutely normally. I'd have expected that if the drive had errors, sometimes that would have affected the OS and/or applications itself.
Anyhow, the fsck reported 0 bad blocks.
Next, I ran the Western Digital Dashboard (on a Windows machine) to see what that had to say about it. It reported "100% Life Remaining" and "Drive Health Normal". It didn't tell me anything about the file system on it - probably because it's ext4 (not supported by Windows). It did say there was a firmware update available, so I installed that. But from what I've read about the firmware update, it was something to do with fixing the disk not being recognised by some systems - which was never a problem.
In the meantime, I'm going to let the mythtv backend carry on with the other HDD for a while to satisfy myself that the pixelation problem has gone. If that is the case, I will re-clone it back to the WD SSD and try again. If the pixelation then comes back, I will attempt to persuade the seller to exchange it.