Calibre won't read metadata.db

[phantom21]

I've been getting an error message when I try to change preferences or load a book into the program.

Using it on Linux, Ubuntu 9.10, with the latest version (I think) of Calibre.

I've tried changing the permissions (initially they were root) and that hasn't worked.

The errors are:
A Tree Rustling over a Gravesite by Dennis Kiingati.pdf
Traceback (most recent call last):
File "/usr/lib/calibre/calibre/gui2/add.py", line 83, in run
title = self.add(id, opf, cover, name)
File "/usr/lib/calibre/calibre/gui2/add.py", line 128, in add
id = self.db.create_book_entry(mi, cover=cover, add_duplicates=False)
File "/usr/lib/calibre/calibre/library/database2.py", line 1371, in create_book_entry
(title, series_index, aus))
File "/usr/lib/calibre/calibre/library/sqlite.py", line 170, in run
raise DatabaseException(*res)
DatabaseException: attempt to write a readonly database
RemoteTraceback (most recent call last):
File "/usr/lib/calibre/calibre/library/sqlite.py", line 141, in run
ok, res = True, func(*args, **kwargs)
OperationalError: attempt to write a readonly database

Can someone advise how to fix the problems?

Thanks,

Mark

[user_none]

You need to have the metadata.db owned and writable by your user. You also need the entre calibre library folder that is with the metadata.db file owned and writable by your user.

Something like this will work:

$ sudo chown -R your_user library_folder
$ sudo chmod -R 744 library_folder

[Manichean]

Moderator Notice
Moved to appropriate subforum.

[phantom21]

thanks user_none. That did resolve it. I had already changed most of the files ownership, but to mostly 644. With 744 everything now works.

Mark