Aura H2O DB image is malformed

myki · 03-28-2015, 04:30 AM

Greetings,

I have launched the "db check integrity.sh" from the KSM menu, and i got :
"Error: database disk image is malformed".

Do you know a way to cure my database ? (I have no backup)
Thanx in advance

Ps :
Each time I use Calibre to send books to my ereader, the database corrupts, and if i reconnect my device, Calibre tells me "Error communicating with device".
I first suspected my USB ports more than Calibre, but when i copy/past books i meet no problems... I am open to any suggestions

Edit : For my problem with Calibre, I will open a new thread

davidfor · 03-28-2015, 05:11 AM

Did you press the details button on the message from calibre? I'd be willing to bet that it shows "database disk image is malformed" or words to that effect. KSM is telling you the database on the device is corrupt. As calibre reads that database when getting the list of books, that is the most likely reason for the error.

Unless you have a backup of the database, the fix is to signout of your Kobo account on the device. This will remove the database and reboot the device. Then it will take you through the setup steps and reload the sideloaded books.

booklover6 · 03-28-2015, 07:03 AM

The fastest way to do this is via the desktop application. Doing it over wifi takes much longer.

tshering · 03-28-2015, 07:31 AM

myki, I guess the fmon problem (killing nickel untimely) created the corruption of the database. Therefore, whatever you are doing in order to recreate your database, start nickel only via "start nickel_no_fmon.sh" until everything is settled (that means all thumbnails of the "dangerous" files are created, and your database is uncorrupted). Otherwise you are caught in a circle. Already when you intend to log in/out of your account, start nickel without involving fmon. (After logging in and out nickel will probably have to create the thumbnails anew.)

myki · 03-28-2015, 08:09 AM

Thanks for your help tshering, I now have a clean database.
But my problem is that my database corrupts as soon as I send a book with Calibre (even just one !), or when Calibre refresh the fields about shelves in the DB.

Here is the log, if it can helps :

Code:

calibre, version 2.22.0
ERROR: Error: Error communicating with device

database disk image is malformed

Traceback (most recent call last):
  File "site-packages\calibre\gui2\device.py", line 87, in run
  File "site-packages\calibre\gui2\device.py", line 503, in _books
  File "site-packages\calibre\devices\kobo\driver.py", line 1787, in books
  File "site-packages\calibre\devices\kobo\driver.py", line 1663, in get_bookshelvesforbook
DatabaseError: database disk image is malformed

The only way to get my kobo works, is to forget Calibre for now

and copy/paste my books, and use the auto shelves script...

tshering · 03-28-2015, 08:30 AM

I do not have any experience with sending books by calibre, but from the log I have the expression, the database was already corrupted when calibre tried to access it.

Note: KSM has the ability to make back ups of the database. The problem is that the restore function is currently broken. So do not get tricked by that.

03-28-2015, 04:30 AM	#1
myki Zealot Posts: 126 Karma: 20236 Join Date: May 2014 Device: Kinde PW v1, Kobo H2O, Onyx Boox T68	DB image is malformed Greetings, I have launched the "db check integrity.sh" from the KSM menu, and i got : "Error: database disk image is malformed". Do you know a way to cure my database ? (I have no backup) Thanx in advance Ps : Each time I use Calibre to send books to my ereader, the database corrupts, and if i reconnect my device, Calibre tells me "Error communicating with device". I first suspected my USB ports more than Calibre, but when i copy/past books i meet no problems... I am open to any suggestions Edit : For my problem with Calibre, I will open a new thread Last edited by myki; 03-28-2015 at 04:58 AM.

03-28-2015, 07:31 AM	#4
tshering Wizard Posts: 3,489 Karma: 2914715 Join Date: Jun 2012 Device: kobo touch	myki, I guess the fmon problem (killing nickel untimely) created the corruption of the database. Therefore, whatever you are doing in order to recreate your database, start nickel only via "start nickel_no_fmon.sh" until everything is settled (that means all thumbnails of the "dangerous" files are created, and your database is uncorrupted). Otherwise you are caught in a circle. Already when you intend to log in/out of your account, start nickel without involving fmon. (After logging in and out nickel will probably have to create the thumbnails anew.) Last edited by tshering; 03-28-2015 at 08:07 AM.

03-28-2015, 08:09 AM	#5
myki Zealot Posts: 126 Karma: 20236 Join Date: May 2014 Device: Kinde PW v1, Kobo H2O, Onyx Boox T68	Thanks for your help tshering, I now have a clean database. But my problem is that my database corrupts as soon as I send a book with Calibre (even just one !), or when Calibre refresh the fields about shelves in the DB. Here is the log, if it can helps : Code: calibre, version 2.22.0 ERROR: Error: Error communicating with device database disk image is malformed Traceback (most recent call last): File "site-packages\calibre\gui2\device.py", line 87, in run File "site-packages\calibre\gui2\device.py", line 503, in _books File "site-packages\calibre\devices\kobo\driver.py", line 1787, in books File "site-packages\calibre\devices\kobo\driver.py", line 1663, in get_bookshelvesforbook DatabaseError: database disk image is malformed The only way to get my kobo works, is to forget Calibre for now and copy/paste my books, and use the auto shelves script... Last edited by myki; 03-28-2015 at 08:12 AM.

03-28-2015, 08:30 AM	#6
tshering Wizard Posts: 3,489 Karma: 2914715 Join Date: Jun 2012 Device: kobo touch	I do not have any experience with sending books by calibre, but from the log I have the expression, the database was already corrupted when calibre tried to access it. Note: KSM has the ability to make back ups of the database. The problem is that the restore function is currently broken. So do not get tricked by that. Last edited by tshering; 03-28-2015 at 08:34 AM.

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03-28-2015, 05:11 AM	#2
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	Did you press the details button on the message from calibre? I'd be willing to bet that it shows "database disk image is malformed" or words to that effect. KSM is telling you the database on the device is corrupt. As calibre reads that database when getting the list of books, that is the most likely reason for the error. Unless you have a backup of the database, the fix is to signout of your Kobo account on the device. This will remove the database and reboot the device. Then it will take you through the setup steps and reload the sideloaded books.

03-28-2015, 07:03 AM	#3
booklover6 Grand Sorcerer Posts: 6,545 Karma: 14008730 Join Date: May 2008 Location: PA (USA) Device: Kobo Clara, 2E, Libre 1, PW4, PW5, 2022 Kindle, Kobo Libre Colour	The fastest way to do this is via the desktop application. Doing it over wifi takes much longer.

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