Issue Restoring Database from OPF

p0lrb3ar · 10-28-2025, 02:50 PM

I am getting this error while trying to run "calibredb restore_database --really-do-it". Calibre v8.12. Restore seems to be creating this folder dynamically. Should I delete the folder right after it's created to see if it can be written again?

I'm having this issue:
*
Starting restoring preferences and column metadata ... 0%
Traceback (most recent call last):
File "calibre\db\restore.py", line 176, in load_preferences
File "calibre\db\restore.py", line 56, in __init__
File "calibre\db\backend.py", line 509, in __init__
File "calibre\db\backend.py", line 1458, in user_version
File "calibre\db\backend.py", line 1162, in conn
File "calibre\db\backend.py", line 372, in __init__
apsw.CantOpenError: unable to open database file
Restoring preferences and column metadata failed ... 0%
Exception ignored in: <function Cache.__del__ at 0x0000026E66B5FBA0>
Traceback (most recent call last):
File "calibre\db\cache.py", line 2817, in __del__
File "calibre\db\cache.py", line 2836, in close
AttributeError: 'Restorer' object has no attribute 'write_lock'
Exception ignored in: <function Cache.__del__ at 0x0000026E66B5FBA0>
Traceback (most recent call last):
File "calibre\db\cache.py", line 2817, in __del__
File "calibre\db\cache.py", line 2836, in close
AttributeError: 'Restorer' object has no attribute 'write_lock'
Restoring database failed with error:
Traceback (most recent call last):
File "calibre\db\restore.py", line 152, in run
File "calibre\db\restore.py", line 280, in create_cc_metadata
File "calibre\db\restore.py", line 56, in __init__
File "calibre\db\backend.py", line 506, in __init__
File "os.py", line 225, in makedirs
FileExistsError: [WinError 183] Cannot create a file when that file already exists: 'R:\\_shared\\dspm1yn1_rlib'

p0lrb3ar · 10-28-2025, 03:14 PM

I deleted the dynamic folder right after it was created, which allowed it to be recreated at the correct time, and the restore completed successfully. This appears to be a bug.

DNSB · 10-28-2025, 08:32 PM

Where is your R: drive located? Local hard drive, local USB drive, NAS, cloud storage?

10-28-2025, 02:50 PM	#1
p0lrb3ar Junior Member Posts: 5 Karma: 10 Join Date: Oct 2025 Device: Kindle	Issue Restoring Database from OPF I am getting this error while trying to run "calibredb restore_database --really-do-it". Calibre v8.12. Restore seems to be creating this folder dynamically. Should I delete the folder right after it's created to see if it can be written again? I'm having this issue: * Starting restoring preferences and column metadata ... 0% Traceback (most recent call last): File "calibre\db\restore.py", line 176, in load_preferences File "calibre\db\restore.py", line 56, in __init__ File "calibre\db\backend.py", line 509, in __init__ File "calibre\db\backend.py", line 1458, in user_version File "calibre\db\backend.py", line 1162, in conn File "calibre\db\backend.py", line 372, in __init__ apsw.CantOpenError: unable to open database file Restoring preferences and column metadata failed ... 0% Exception ignored in: <function Cache.__del__ at 0x0000026E66B5FBA0> Traceback (most recent call last): File "calibre\db\cache.py", line 2817, in __del__ File "calibre\db\cache.py", line 2836, in close AttributeError: 'Restorer' object has no attribute 'write_lock' Exception ignored in: <function Cache.__del__ at 0x0000026E66B5FBA0> Traceback (most recent call last): File "calibre\db\cache.py", line 2817, in __del__ File "calibre\db\cache.py", line 2836, in close AttributeError: 'Restorer' object has no attribute 'write_lock' Restoring database failed with error: Traceback (most recent call last): File "calibre\db\restore.py", line 152, in run File "calibre\db\restore.py", line 280, in create_cc_metadata File "calibre\db\restore.py", line 56, in __init__ File "calibre\db\backend.py", line 506, in __init__ File "os.py", line 225, in makedirs FileExistsError: [WinError 183] Cannot create a file when that file already exists: 'R:\\_shared\\dspm1yn1_rlib'

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10-28-2025, 03:14 PM	#2
p0lrb3ar Junior Member Posts: 5 Karma: 10 Join Date: Oct 2025 Device: Kindle	I deleted the dynamic folder right after it was created, which allowed it to be recreated at the correct time, and the restore completed successfully. This appears to be a bug.

10-28-2025, 08:32 PM	#3
DNSB Bibliophagist Posts: 48,198 Karma: 174315444 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	Where is your R: drive located? Local hard drive, local USB drive, NAS, cloud storage?

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