Thread: Clara HD database disk image error
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Old 10-31-2020, 02:30 PM   #19
compurandom
Wizard
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Posts: 1,018
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Join Date: Jun 2015
Device: Rocketbook, kobo aura h2o, kobo forma, kobo libra color
Quote:
Originally Posted by davidfor View Post
I don't think it is a software issue. I think it is more likely that the file system was corrupt somehow, or possibly the SD card is failing.
I am convinced that calibre corrupted the database on my brand new forma at least 3x. Both times I restored the database from the kobo utilities backup and everything was ok. Once the forma reset itself and logged me out. I am very sure I ejected correctly every time, and at least one of the times I hadn't done anything on the kobo except import books between when the database was OK and when it was corrupted.

Whatever the problem was, it went away when I upgraded from 4.x to 5.2 and then upgraded all my plugins. Sorry, I didn't try to debug it.

It may have been a race condition between calibre modifying the sqlite database and a plugin modifying it.
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