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Old 02-18-2024, 09:19 AM   #1
Lung Bing
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Why are my metadat.opf files changing?
I use Syncbackfree to backup my discs, including the one with the Calibre libraries on. Syncbackfree checks what is different between the source and the destination backup and lists those files that have changed and will be copied over to the backup.

There are always a large number of metadata.opf files for books that I have not read or changed in any way.

It's not really a problem as they copy over quickly, but what could be changing my metadata.opf files?
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Old 02-18-2024, 09:56 AM   #2
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Quote:
Originally Posted by Lung Bing View Post
I use Syncbackfree to backup my discs, including the one with the Calibre libraries on. Syncbackfree checks what is different between the source and the destination backup and lists those files that have changed and will be copied over to the backup.

There are always a large number of metadata.opf files for books that I have not read or changed in any way.

It's not really a problem as they copy over quickly, but what could be changing my metadata.opf files?
Those files exist for calibre to use as backup data. They are changed whenever anything changes in the library that might affect the book. Examples: custom column changes, tag case changes, book metadata changes, etc.
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Old 02-19-2024, 06:00 AM   #3
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Have you tried FreeFileSync? From the comparisons I've read, it's better then SynCBackFree.
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Old 02-19-2024, 10:51 AM   #4
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Have you tried FreeFileSync? From the comparisons I've read, it's better then SynCBackFree.
Not relevant to the question. FreeFileSync will also copy the updated metadata.opfs.
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Old 02-19-2024, 02:43 PM   #5
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Not relevant to the question. FreeFileSync will also copy the updated metadata.opfs.
The OP's question was answered. So now it's time for thread drift.
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Old 02-19-2024, 06:37 PM   #6
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The OP's question was answered. So now it's time for thread drift.
So what did you think of the Baftas?
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Old 02-19-2024, 07:44 PM   #7
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Old 02-20-2024, 04:47 AM   #8
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Quote:
Originally Posted by Lung Bing View Post
There are always a large number of metadata.opf files for books that I have not read or changed in any way.
I backup my calibre library to a git repo and I it does not happen often, but I do sometimes notice changes to opf files for lots of books that I have not opened. Since the opf files are just text files, it is easy to see what the changes are. The last time it happened there was a load of books with a line

<dc:subject>murder</dc:subject>

changed to

<dc:subject>Murder</dc:subject>

In other words a tag had been changed to be capitalized and this rewrote the opf files for all the books that had this tag. There was one new book added with this tag, but I can't honestly remember where the book came with that tag originally or whether I added or edited it.
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Old 02-20-2024, 12:39 PM   #9
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So what did you think of the Baftas?
That was the best show I didn't watch.
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