09-23-2024, 03:00 PM | #46 | |
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09-23-2024, 05:58 PM | #47 | |
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That was the issue with the Kobo firmware that was prone to database corruption in that the USB connection was established before the databases were closed. |
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09-24-2024, 08:11 AM | #48 | |
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Does calibre check for those? Can we change it to or add a plugin that does? |
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09-24-2024, 02:19 PM | #49 |
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calibre does not check for them. There are multiple ways to corrupt the database, this was just one that was visually obvious when you looked at the file system.
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09-24-2024, 07:50 PM | #50 |
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It would be super useful if calibre could check for the database scratch files before it opens the database, because after it opens the database, they are guaranteed to be there. So the only way to tell is to close calibre before I plug the device in.
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09-24-2024, 08:04 PM | #51 |
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Unfortunately the damage is probably already done regardless of any access being done by calibre to the file system.
The presence of any of the wal / shm files means that processes have not been shutdown cleanly on the Linux side of the Kobo, before the file system has been shared via usb with the PC. I don't recall all the details but it's even possible that the shared file system has been remounted as read only on the Kobo side. Sent from my Pixel 7a using Tapatalk |
09-25-2024, 03:23 AM | #52 | |
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And not checking for this before opening the database makes this very difficult to detect and debug. If I knew that the database was damaged, rather than let calibre damage it more by using it, I could reboot the kobo, attempt repair on the database before it gets worse, and/or restore the database from backup before it goes for another 2-3 days and gets further corrupted to the point where restoring the database isn't going to help more than just deleting the database and rebuilding it. Without some kind of detection of this problem, I'm left with the best option of rebooting the kobo before every usb connection. And no, going back to home screen doesn't fix this issue and never did. I'd say that maybe it makes it less likely, but really I think it's just waving a rubber chicken at the problem. Last edited by compurandom; 09-25-2024 at 03:28 AM. |
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09-25-2024, 07:04 AM | #53 | |
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09-25-2024, 08:32 AM | #54 |
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09-25-2024, 10:12 PM | #55 |
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09-26-2024, 08:51 AM | #56 |
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... and never underestimate the usage of the enforcing hammer for fine-tuning...
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09-27-2024, 10:17 PM | #57 |
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09-28-2024, 09:50 AM | #58 |
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09-28-2024, 01:03 PM | #59 |
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09-28-2024, 02:19 PM | #60 |
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I just cry and my computer feels sorry for me.
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firmware, firmware release |
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