|
![]() |
|
Thread Tools | Search this Thread |
![]() |
#1 |
Member
![]() Posts: 23
Karma: 10
Join Date: Aug 2022
Device: Kindle PW4 10th gen; Kobo Libra 2
|
Calibre thinks there are multiple copies of books on my Kindle running KOReader
I have a Kindle Paperwhite and I'm running KOReader on it. When I connect KOReader to WiFi and wirelessly connect to Calibre (Calibre detects it as "Wireless Device: KOReader (KindlePaperWhite4)"), Calibre keeps telling me that there are multiple copies of the same book on my device. I do not use the stock Kindle reader at all, and all formats on it are stored as epub. I can reliably reproduce this issue simply by sending a book that is not currently on my kindle to the kindle twice, then disconnecting and reconnecting to Calibre. Calibre will then tell me that the book exists twice, and when I go to "Remove Books > Remove matching books from device", it tells me that both copies are on "Main Memory" and have identical paths (ie, same exact file detected twice). If I send the same book a third time, and disconnect and reconnect, it will say the single file is now 3 different copies of the book.
|
![]() |
![]() |
![]() |
#2 |
creator of calibre
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 44,273
Karma: 23661992
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
|
presumably the KOReader firmware is reporting the book twice to calibre. I dont know much about the wireless driver or KOReader, but that's pretty much the only way I know of that calibre will think there are multiple copies of a file.
|
![]() |
![]() |
Advert | |
|
![]() |
#3 |
Member
![]() Posts: 23
Karma: 10
Join Date: Aug 2022
Device: Kindle PW4 10th gen; Kobo Libra 2
|
I thought I was creating this post in the "Calibre" section, didn't realize I created in the "Calibre > Device" section. Please move this thread to the appropriate section if this isn't the correct one.
Is it Calibre, the wireless driver, or the KOReader app that creates/modifies the `.metadata.calibre` file that's in the library folder on my device? If I open the metadata file and look for the book that calibre falsely thinks is on the device twice, I see completely identical, duplicate entries for the book in question. I guess whatever part of the process that modifies that file is failing to check if the book already exists in the metadata, so when calibre reads the metadata file on the subsequent connections, it sees the metadata there twice? Code:
{ "series_index": 1, "size": 642262, "series": "Kiera Hudson 2", "tags": [ "Werewolves", "tim orourke", "Fantasy", "Vampires", "werewolf", "potter", "Romance", "Young Adult", "diaries", "kiera hudson", "Horror", "vampire", "To Read" ], "uuid": "22fc4ff1-4c97-4e54-b2ab-92ff1557b04a", "last_modified": "2022-10-29T06:48:05+00:00", "lpath": "Kiera Hudson 2/1 - Dead Flesh - O'Rourke, Tim.epub", "authors": [ "Tim O'Rourke" ], "title": "Dead Flesh" }, { "series_index": 1, "size": 642262, "series": "Kiera Hudson 2", "tags": [ "Werewolves", "tim orourke", "Fantasy", "Vampires", "werewolf", "potter", "Romance", "Young Adult", "diaries", "kiera hudson", "Horror", "vampire", "To Read" ], "uuid": "22fc4ff1-4c97-4e54-b2ab-92ff1557b04a", "last_modified": "2022-10-29T06:48:05+00:00", "lpath": "Kiera Hudson 2/1 - Dead Flesh - O'Rourke, Tim.epub", "authors": [ "Tim O'Rourke" ], "title": "Dead Flesh" } |
![]() |
![]() |
![]() |
#4 |
Grand Sorcerer
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 11,911
Karma: 7076137
Join Date: Jan 2010
Location: Notts, England
Device: Kobo Libra 2
|
|
![]() |
![]() |
![]() |
#5 |
Resident Curmudgeon
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 75,702
Karma: 134319572
Join Date: Nov 2006
Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
|
Maybe this should be in the KOReader forum.
|
![]() |
![]() |
Advert | |
|
![]() |
#6 |
Member
![]() Posts: 23
Karma: 10
Join Date: Aug 2022
Device: Kindle PW4 10th gen; Kobo Libra 2
|
Yea, I'm just making sure it wasn't some component of Calibre first, since Calibre does say that it's updating metadata on the device each time I send a book to KOReader. Gonna make a post on their GitHub about it when I get a chance.
|
![]() |
![]() |
![]() |
#7 | |
Grand Sorcerer
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 11,911
Karma: 7076137
Join Date: Jan 2010
Location: Notts, England
Device: Kobo Libra 2
|
Quote:
The driver has no access to the device's memory. It requests information from the client and uses that to build a list of books on the device. Later it gives metadata back to the client, and the client does whatever it wants with that metadata. When you send a book it is the client that decides where to store it and whether it is an overwrite or a new format. |
|
![]() |
![]() |
![]() |
#8 |
Member
![]() Posts: 23
Karma: 10
Join Date: Aug 2022
Device: Kindle PW4 10th gen; Kobo Libra 2
|
So if I understand the flow correctly, then this means it's entirely on the device to determine whether the newly added/overridden book is a brand new file that isn't currently stored on the device, versus this book has the exact same folder and filename and therefore is just an updated book. Therefore the bug must be in KOReader's implementation of a wireless Calibre client.
|
![]() |
![]() |
![]() |
#9 |
Member
![]() Posts: 23
Karma: 10
Join Date: Aug 2022
Device: Kindle PW4 10th gen; Kobo Libra 2
|
The KOReader team found a bug in the wireless Calibre plugin in KOReader. Thanks for pointing me over there.
|
![]() |
![]() |
![]() |
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Is there a way to find all books w/ multiple copies? | MarjaE | Library Management | 3 | 08-31-2019 01:18 AM |
How to avoid importing duplicate copies of Kindle books when adding books to calibre | kgwdc | Calibre | 1 | 08-11-2018 07:19 PM |
All my books on device, but Calibre thinks 12% of them aren't. | Geremia | Library Management | 0 | 12-27-2014 07:15 PM |
Keeping Calibre customizations in sync across multiple copies | CuriousGrrl | Calibre | 6 | 05-12-2013 06:15 PM |
Multiple copies of books | mr ploppy | Amazon Kindle | 4 | 10-30-2010 01:20 PM |