Troubleshooting: Corrupted Database Disk Image

Pselus · 03-20-2022, 03:52 PM

I tried to add a book today to my Calibre library, and my Kobo e-reader.
I've used this Kobo + Calibre for a few years now.
I added a book the same way about a month ago.
Today when plugging in my Kobo, Calibre throws this error:

Quote:

calibre, version 5.39.1
ERROR: Error: Error communicating with device

CorruptError: database disk image is malformed

Traceback (most recent call last):
File "calibre\gui2\device.py", line 87, in run
File "calibre\gui2\device.py", line 512, in _books
File "calibre\devices\kobo\driver.py", line 1987, in books
apsw.CorruptError: CorruptError: database disk image is malformed

Calibre shows that there are no books on my device. However, when I eject the device, it imports the library and has SOME of my books, but not all. Each time I disconnect, it resets the reading statistics and some books show up on the device, and others don't.

Is there a way to fix this?

ownedbycats · 03-20-2022, 03:56 PM

The database on your Kobo is corrupt.

If you have a database backup taken with Kobo Utilities, restore from the last good one.

Otherwise sign out of your account and sign back in. That will fix the database but your reading stats and positions will get wiped.

If you're using firmware 4.31, there's been reports of it being a bit unstable. Several of us have downgraded to 4.30. Ask in the Kobo forums for more info.

Pselus · 03-20-2022, 04:08 PM

Ok, for reference sake, my Kobo has been offline, and not updated in....forever...
So I'm surprised something would corrupt with just normal use.

Also, does it matter that my entire library has been controlled by Calibre for the life of the device?

ownedbycats · 03-20-2022, 04:12 PM

Depending on how old your device is, it's possible the SD card might be starting to fail -- I retired my Aura HD at, I think, the seven-year mark because of this.

theducks · 03-20-2022, 04:16 PM

Quote:

Originally Posted by Pselus

Ok, for reference sake, my Kobo has been offline, and not updated in....forever...
So I'm surprised something would corrupt with just normal use.

Also, does it matter that my entire library has been controlled by Calibre for the life of the device?

IIRC the Kobo utilities PI can check for updates and insert them while connected.
On the Kobo, find the 'About' in settings and look at the version.

Also, pulling the USB while metadata updates are in progress can barf on things.
Always wait for the main screen on the Kobo to settle before unplugging: USB transfers can be buffered, so just because Calibre removes the On Device column, does not prove the transfer is done.

Pselus · 03-20-2022, 04:25 PM

Thank you everyone for the help. It looks like signing out on my Kobo and back in has allowed Calibre to see my library. Appreciate it!

bigpallooka · 04-03-2022, 08:43 AM

Quote:

Otherwise sign out of your account and sign back in. That will fix the database but your reading stats and positions will get wiped.

I can confirm this worked with the same problem in 5.4.0

JSWolf · 04-03-2022, 08:50 AM

@Pselus what firmware version are you running on your Kobo?

ownedbycats · 04-03-2022, 02:54 PM

Did you even read the thread, like you tell others to do? Because it was covered in posts #2 and #3.

03-20-2022, 04:12 PM	#4
ownedbycats Custom User Title Posts: 10,919 Karma: 74203799 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Depending on how old your device is, it's possible the SD card might be starting to fail -- I retired my Aura HD at, I think, the seven-year mark because of this. Last edited by ownedbycats; 03-20-2022 at 07:10 PM.

04-03-2022, 02:54 PM	#9
ownedbycats Custom User Title Posts: 10,919 Karma: 74203799 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Did you even read the thread, like you tell others to do? Because it was covered in posts #2 and #3. Last edited by ownedbycats; 04-03-2022 at 05:19 PM.

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03-20-2022, 03:56 PM	#2
ownedbycats Custom User Title Posts: 10,919 Karma: 74203799 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	The database on your Kobo is corrupt. If you have a database backup taken with Kobo Utilities, restore from the last good one. Otherwise sign out of your account and sign back in. That will fix the database but your reading stats and positions will get wiped. If you're using firmware 4.31, there's been reports of it being a bit unstable. Several of us have downgraded to 4.30. Ask in the Kobo forums for more info. Last edited by ownedbycats; 03-20-2022 at 04:05 PM.

03-20-2022, 04:08 PM	#3
Pselus Member Posts: 13 Karma: 10 Join Date: Jul 2010 Device: Kobo Aura	Ok, for reference sake, my Kobo has been offline, and not updated in....forever... So I'm surprised something would corrupt with just normal use. Also, does it matter that my entire library has been controlled by Calibre for the life of the device?

03-20-2022, 04:25 PM	#6
Pselus Member Posts: 13 Karma: 10 Join Date: Jul 2010 Device: Kobo Aura	Thank you everyone for the help. It looks like signing out on my Kobo and back in has allowed Calibre to see my library. Appreciate it!

04-03-2022, 08:50 AM	#8
JSWolf Resident Curmudgeon Posts: 79,665 Karma: 145864619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	@Pselus what firmware version are you running on your Kobo?

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