Kobo Libra H20 (FW 4.26.16704) does not index/show my ePubs

coleder · 03-01-2021, 12:23 PM

I have been using a Kobo Aura for years and uploaded epubs to /mnt/sd/book to its sdcard using the USB cable, later using KOReader OPDS. The most recent firmware does index and show the epubs in /mnt/sd/book.

Now I bought a Kobo Libra H20 and it does not have an external SD card reader, but there is still a folder /mnt/sd. However, the built-in Kobo Reader does not index or show any of my epubs in /mnt/sd/book or in /mnt/onboard/book.

Is that a limitation of the Libra H20? It works fine on the Aura with the same firmware version!

How can I make the Kobo reader Libra H20 index and show my epubs and what is the preferred path to place them in the file system?

PS: Sure, reading the epubs still works using KOReader and Plato, but I would like to get it to work also with the builtin Kobo Reader.

Elektron · 03-01-2021, 12:54 PM

Why not just /mnt/onboard?

coleder · 03-01-2021, 01:03 PM

Quote:

Originally Posted by Elektron

Why not just /mnt/onboard?

Because it would be messy. I have folders for book, comic, report on my Aura. The Aura Kobo Reader indexes all that automatically. Why wouldn't it do the same on the Libra H20?

coleder · 03-01-2021, 01:09 PM

Quote:

Originally Posted by Elektron

Why not just /mnt/onboard?

BTW, I just moved an epub to /mnt/onboard. That still got not indexed. That sounds weird to me. Will the Libra Kobo reader only index books that were downloaded through its own official book stores? And why does that not happen on the Aura Kobo Reader with the same firmware?

coleder · 03-01-2021, 01:28 PM

I just found that this behavior only concerns the epubs that I download using OPDS. If i connect the Libra with a USB cable and upload a book, all books, also those downloaded via OPDS become indexed and visible by Kobo Reader.

There seems to be a difference in behavior between the Aura and Libra model when downloading through OPDS.

coleder · 03-01-2021, 01:35 PM

I checked the ownership and permissions of the epub files in the filesystem using SSH. They have all the same owner and permissions.

Any ideas anyone?

NiLuJe · 03-01-2021, 01:38 PM

Nickel has always needed an USBMS session to index/update books.

I can't vouch for it looking inside /mnt/sd on devices without an SD card (EDIT: Actually, it probably does, c.f., #10), but, for the rest, may I interest you in our lord and savior NickelMenu's rescan_books feature, which will allow you do to just that without actually going through the hassle of an USBMS session

. (Which you can also fake via NM, BTW ^^).

coleder · 03-01-2021, 01:41 PM

One more thing:
Using the USB storage mode in KOReader does not trigger the Kobo Reader to index the epubs. However, using the USB storage mode of the Kobo Reader does make the Kobo reader to index the epubs.

NiLuJe · 03-01-2021, 01:55 PM

Again, perfectly normal. Nickel is dead as a doornail at that point.

And since it doesn't index on startup, we're back to the same answer as above

.

NiLuJe · 03-01-2021, 02:03 PM

Cross-reference, and an explanation of why the SD card scanning differs in some contexts: https://github.com/koreader/koreader...ment-788188984

(Hence the old trick of bind-mounting stuff to /mnt/sd and faking an sd eject/insert. But, don't do that, use NM

).

coleder · 03-01-2021, 02:19 PM

Thanks for the quick and helpful response!
I have used an installation script form this forum to get KOReader and Plato installed together and with I guess NickelMenu. I have no idea how to configure NM, I just use it to start KOReader or Plato. It seems to be able to do a whole lot more though - interesting.

So how would I make NM to trigger a rescan_books when KOReader exits or when the Kobo Reader restarts?

(A pointer to a tutorial would be also fine, I already have SSH login capability on KOReader)

coleder · 03-01-2021, 02:31 PM

Wouldn't it make sense to have this rescan_books enabled by default? Would that hurt anyone?

JSWolf · 03-01-2021, 03:38 PM

Quote:

Originally Posted by coleder

Wouldn't it make sense to have this rescan_books enabled by default? Would that hurt anyone?

There has to be a way to tell Nickel that there are new books that need scanning. So bypassing that means Nickel doesn't know and won't scan.

coleder · 03-01-2021, 04:18 PM

For they sake of those also being new to all this, like I am:
Using ssh and vi I placed a file /mnt/onboard/.adds/nm/library with the following content to get a menu item "Import books" in the "My Books" view:

menu_item :library :Import books :nickel_misc :rescan_books_full

I can now use this to make the books visible that have been downloaded using OPDS.

03-01-2021, 01:38 PM	#7
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Nickel has always needed an USBMS session to index/update books. I can't vouch for it looking inside /mnt/sd on devices without an SD card (EDIT: Actually, it probably does, c.f., #10), but, for the rest, may I interest you in our lord and savior NickelMenu's rescan_books feature, which will allow you do to just that without actually going through the hassle of an USBMS session . (Which you can also fake via NM, BTW ^^). Last edited by NiLuJe; 03-01-2021 at 02:05 PM.

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03-01-2021, 12:23 PM	#1
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	Kobo Libra H20 (FW 4.26.16704) does not index/show my ePubs I have been using a Kobo Aura for years and uploaded epubs to /mnt/sd/book to its sdcard using the USB cable, later using KOReader OPDS. The most recent firmware does index and show the epubs in /mnt/sd/book. Now I bought a Kobo Libra H20 and it does not have an external SD card reader, but there is still a folder /mnt/sd. However, the built-in Kobo Reader does not index or show any of my epubs in /mnt/sd/book or in /mnt/onboard/book. Is that a limitation of the Libra H20? It works fine on the Aura with the same firmware version! How can I make the Kobo reader Libra H20 index and show my epubs and what is the preferred path to place them in the file system? PS: Sure, reading the epubs still works using KOReader and Plato, but I would like to get it to work also with the builtin Kobo Reader.

03-01-2021, 12:54 PM	#2
Elektron Banned Posts: 2,296 Karma: 5300240 Join Date: Jun 2020 Location: Edmonton, AB Device: Kobo Aura H2O Edition 2 (mark 7), Kobo Mini	Why not just /mnt/onboard?

03-01-2021, 01:28 PM	#5
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	I just found that this behavior only concerns the epubs that I download using OPDS. If i connect the Libra with a USB cable and upload a book, all books, also those downloaded via OPDS become indexed and visible by Kobo Reader. There seems to be a difference in behavior between the Aura and Libra model when downloading through OPDS.

03-01-2021, 01:35 PM	#6
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	I checked the ownership and permissions of the epub files in the filesystem using SSH. They have all the same owner and permissions. Any ideas anyone?

03-01-2021, 01:41 PM	#8
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	One more thing: Using the USB storage mode in KOReader does not trigger the Kobo Reader to index the epubs. However, using the USB storage mode of the Kobo Reader does make the Kobo reader to index the epubs.

03-01-2021, 01:55 PM	#9
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Again, perfectly normal. Nickel is dead as a doornail at that point. And since it doesn't index on startup, we're back to the same answer as above .

03-01-2021, 02:03 PM	#10
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Cross-reference, and an explanation of why the SD card scanning differs in some contexts: https://github.com/koreader/koreader...ment-788188984 (Hence the old trick of bind-mounting stuff to /mnt/sd and faking an sd eject/insert. But, don't do that, use NM ).

03-01-2021, 02:19 PM	#11
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	Thanks for the quick and helpful response! I have used an installation script form this forum to get KOReader and Plato installed together and with I guess NickelMenu. I have no idea how to configure NM, I just use it to start KOReader or Plato. It seems to be able to do a whole lot more though - interesting. So how would I make NM to trigger a rescan_books when KOReader exits or when the Kobo Reader restarts? (A pointer to a tutorial would be also fine, I already have SSH login capability on KOReader)

03-01-2021, 02:31 PM	#12
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	Wouldn't it make sense to have this rescan_books enabled by default? Would that hurt anyone?

03-01-2021, 04:18 PM	#14
coleder Member Posts: 14 Karma: 10 Join Date: Mar 2021 Device: none	For they sake of those also being new to all this, like I am: Using ssh and vi I placed a file /mnt/onboard/.adds/nm/library with the following content to get a menu item "Import books" in the "My Books" view: menu_item :library :Import books :nickel_misc :rescan_books_full I can now use this to make the books visible that have been downloaded using OPDS.

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