Lost opf files when moving files to a new library

theaccountant · 02-25-2015, 01:19 PM

I moved files to a new library and I noticed that the OPFs were deleted and not moved. I haven't noticed this before and I done this many times. Is this normal behaviour? The jpg and file move ok.

Thanks

eschwartz · 02-25-2015, 02:40 PM

Do you mean, you used the calibre option to "Copy to library" ==> "____ (delete after copy)" and there is no OPF in the new library?

Or you moved the library itself? In which case, did you move it via the File Browser, and if so, were any programs accessing the calibre library folder at the time?

(calibre does have its own Move Library feature, in the Select Library dialog.)

theaccountant · 02-25-2015, 02:52 PM

Quote:

Originally Posted by eschwartz

Do you mean, you used the calibre option to "Copy to library" ==> "____ (delete after copy)" and there is no OPF in the new library?

Yes thats the case.

Anyhow I discovered the answer. I hadn't opened the new library. When I do the opf files are recreated. They are not copied over.

BetterRed · 02-25-2015, 02:53 PM

@theaccountant - if you did not 'copy' all the custom columns then if the 'old' opf files were copied then they would contain junk data, hence they're not copied.

I think you'll find that 'new' junk free opf files are being created in the background - look at Library Maintenance->Library metadata backup status. Ah-ha - I see you already found that

Maybe they're never copied, custom column select-ability is a fairly recent new feature, Kovid may have decided that opf recreation would be a safer option in all cases.

BR

eschwartz · 02-25-2015, 03:11 PM

Well then, that is all right.

Since all the metadata is first and foremost in the database, calibre is taking its own sweet time about writing the OPF backups.

I suppose calibre *could* write an OPF based on the metadata it does transfer over, which would help in the extremely unlikely case that the other library's database gets irreparably corrupted sometime in between the transfer and the very first time you open it.

02-25-2015, 01:19 PM	#1
theaccountant Enthusiast Posts: 26 Karma: 10 Join Date: Mar 2011 Device: Awful Hanvon N518	Lost opf files when moving files to a new library I moved files to a new library and I noticed that the OPFs were deleted and not moved. I haven't noticed this before and I done this many times. Is this normal behaviour? The jpg and file move ok. Thanks

02-25-2015, 02:40 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)	Do you mean, you used the calibre option to "Copy to library" ==> "____ (delete after copy)" and there is no OPF in the new library? Or you moved the library itself? In which case, did you move it via the File Browser, and if so, were any programs accessing the calibre library folder at the time? (calibre does have its own Move Library feature, in the Select Library dialog.) Last edited by eschwartz; 02-25-2015 at 02:42 PM.

02-25-2015, 02:53 PM	#4
BetterRed null operator (he/him) Posts: 21,608 Karma: 29710338 Join Date: Mar 2012 Location: Sydney Australia Device: none	@theaccountant - if you did not 'copy' all the custom columns then if the 'old' opf files were copied then they would contain junk data, hence they're not copied. I think you'll find that 'new' junk free opf files are being created in the background - look at Library Maintenance->Library metadata backup status. Ah-ha - I see you already found that Maybe they're never copied, custom column select-ability is a fairly recent new feature, Kovid may have decided that opf recreation would be a safer option in all cases. BR Last edited by BetterRed; 02-25-2015 at 02:54 PM. Reason: Added red text

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02-25-2015, 03:11 PM	#5
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)	Well then, that is all right. Since all the metadata is first and foremost in the database, calibre is taking its own sweet time about writing the OPF backups. I suppose calibre could write an OPF based on the metadata it does transfer over, which would help in the extremely unlikely case that the other library's database gets irreparably corrupted sometime in between the transfer and the very first time you open it.

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