[Dan__]

Running Mac. I've put the Calibre library on a Windows File Server. Everything works fine until the Mac suspends while Calibre is running. When you wake it up and try to perform any operation in Calibre is either says there are no formats:

calibre, version 0.8.30
ERROR: Format unavailable: Selected books have no formats

Then when the app exits, it says:
calibre, version 0.8.30
ERROR: Unhandled exception: <b>DatabaseException</b>:disk I/O error
RemoteTraceback (most recent call last):
File "site-packages/calibre/library/sqlite.py", line 271, in run
File "site-packages/calibre/library/sqlite.py", line 166, in get
OperationalError: disk I/O error

Traceback (most recent call last):
File "site-packages/calibre/gui2/actions/edit_metadata.py", line 175, in edit_metadata
File "site-packages/calibre/gui2/actions/edit_metadata.py", line 195, in do_edit_metadata
File "site-packages/calibre/gui2/metadata/single.py", line 976, in edit_metadata
File "site-packages/calibre/gui2/metadata/single.py", line 483, in start
File "site-packages/calibre/gui2/metadata/single.py", line 508, in do_one
File "site-packages/calibre/gui2/metadata/single.py", line 277, in __call__
File "site-packages/calibre/gui2/metadata/basic_widgets.py", line 1181, in initialize
File "site-packages/calibre/gui2/languages.py", line 31, in init_langs
File "site-packages/calibre/library/database2.py", line 2454, in get_languages_with_ids
File "site-packages/calibre/library/sqlite.py", line 314, in run
DatabaseException: disk I/O error
RemoteTraceback (most recent call last):
File "site-packages/calibre/library/sqlite.py", line 271, in run
File "site-packages/calibre/library/sqlite.py", line 166, in get
OperationalError: disk I/O error