Ubuntu - Cannot Add Books

lsk123 · 06-28-2016, 02:45 PM

Kovid, I have been using Calibre for years, thank you!

I ran into the same problem, on Ubuntu 16.04. My version was 2.55, so I upgraded it to 2.60. Same problem:

calibre, version 2.60.0
ERROR: Cannot add books: Failed to add any books, click "Show details" for more information.

Failed to start worker process
Traceback (most recent call last):
File "site-packages/calibre/utils/ipc/pool.py", line 197, in start_worker
File "site-packages/calibre/utils/ipc/pool.py", line 185, in create_worker
File "site-packages/calibre/utils/ipc/pool.py", line 71, in start_worker
File "site-packages/calibre/utils/ipc/simple_worker.py", line 160, in start_pipe_worker
File "subprocess.py", line 710, in __init__
File "subprocess.py", line 1231, in _execute_child
OSError: [Errno 12] Cannot allocate memory

Any help would be greatly appreciated

Leon

eschwartz · 06-28-2016, 03:28 PM

This is not the same problem, since in this case the reason the worker process failed is because of a "Cannot allocate memory" error when trying to spawn a subprocess.

Here is a good link which explains the usual reasons for this (and a possible solution): https://stackoverflow.com/questions/...llocate-memory

tl;dr
You ran out of RAM, either for real or because the subprocess wanted to reserve the right to access more RAM than you had available.

lsk123 · 07-01-2016, 10:35 AM

Thank you eschwartz!

That was a pretty dumb mistake on my part, I had a new install of 16.04 without any swap and was only looking at the calibre error. Thanks again for taking the time and providing the relevant link.

Leon

eschwartz · 07-01-2016, 02:27 PM

Happy to help.

06-28-2016, 02:45 PM	#1
lsk123 Junior Member Posts: 2 Karma: 10 Join Date: Jun 2016 Device: kindle	Ubuntu - Cannot Add Books Kovid, I have been using Calibre for years, thank you! I ran into the same problem, on Ubuntu 16.04. My version was 2.55, so I upgraded it to 2.60. Same problem: calibre, version 2.60.0 ERROR: Cannot add books: Failed to add any books, click "Show details" for more information. Failed to start worker process Traceback (most recent call last): File "site-packages/calibre/utils/ipc/pool.py", line 197, in start_worker File "site-packages/calibre/utils/ipc/pool.py", line 185, in create_worker File "site-packages/calibre/utils/ipc/pool.py", line 71, in start_worker File "site-packages/calibre/utils/ipc/simple_worker.py", line 160, in start_pipe_worker File "subprocess.py", line 710, in __init__ File "subprocess.py", line 1231, in _execute_child OSError: [Errno 12] Cannot allocate memory Any help would be greatly appreciated Leon

07-01-2016, 10:35 AM	#3
lsk123 Junior Member Posts: 2 Karma: 10 Join Date: Jun 2016 Device: kindle	No SWAP! Thank you eschwartz! That was a pretty dumb mistake on my part, I had a new install of 16.04 without any swap and was only looking at the calibre error. Thanks again for taking the time and providing the relevant link. Leon

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06-28-2016, 03:28 PM	#2
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	This is not the same problem, since in this case the reason the worker process failed is because of a "Cannot allocate memory" error when trying to spawn a subprocess. Here is a good link which explains the usual reasons for this (and a possible solution): https://stackoverflow.com/questions/...llocate-memory tl;dr You ran out of RAM, either for real or because the subprocess wanted to reserve the right to access more RAM than you had available.

07-01-2016, 02:27 PM	#4
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Happy to help.

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