Known Participant

Question

Smart previews for cloud sync recreated after metadata edits?

Forum|Forum|4 years ago
May 31, 2021
4 replies
2965 views

Hi,

(Lightroom Classic 10.2 on Windows 10 19043)

I imported 3000 raws in Lightroom Classic, smart previews for cloud sync were generated in the background as expected.

Days later I added metadata info (Exif location, keyword... not written to the file) and Lightroom has been working (CPU and upload) like crazy.

Therefore my question: does adding metadata trigger the re-generation of smart previews for cloud sync? (which should be avoided in my opinion)

Thanks,

Olivier

This topic has been closed for replies.

john beardsworth

Community Expert

It would make sense if you change the original. That might be a change to a TIF or JPG which means the previously-uploaded smart preview might be a very different image from the file now. Changes to EXIF data might well be the same.

Todd Shaner

Legend

Not that I'm aware of. Since this appears to be abnormal behavior I suggest using the CC app to uninstall and reintsall LrC and see if that helps. If no improvement try resetting the LrC Preferences file, which is retained when doing and uninstall/reintsall. Move it to the desktop so you can restore it if no improvement. Retart LrC and a new Preferences file will be created.

https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/

Todd Shaner

Legend

Check the files in WIndows Explorer ans see if XMP files have been created. You mentioned 'Automatically Wriyte Changes to XMP' is not checked, but a Preferences file corruption could enable it. If you see XMP files try resetting LrC Preferences file. Place a copy of the Preferences file on your desktop so it can be easily restored if of no help.

https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/

Olivier GALLENAuthor

Known Participant

No XMP file found here 😕😕

Should I delete sync.lrdata folder completely to restore... errr.... hope? 😉

Todd Shaner

Legend

You can try that, but I'm not sure it will change anything. Go to LrC Preferences> Lightroom Sync and click on 'Delete All Synced Data.' It will take some time to resync the 3,000 image files.

JohanElzenga

Community Expert

It shouldn't, because these extra data are not synced.

-- Johan W. Elzenga

Olivier GALLENAuthor

Known Participant

More testing:
- It's Exif edition that sparks this (not keywords)

- Lightroom will use the CPU, access/read the raw files (on my D drive), read/write its' catalog (on C drive) and resync those images on the cloud.

To put in perspective: when adding one Exif word on 3000 images, Lightroom will read several gigabytes on drive, use 3 minutes of CPU and upload hundreds of megabytes to the cloud (see attached performance monitoring). I don't see why... and it does slow down Lightroom quite a bit.

PS: and "Automatically write changes to XMP" is disabled.

johnrellis

Legend

"It's Exif edition that sparks this (not keywords)"

Can you clarify what you mean by "Exif edition"? In English, there is no field in the Metadata EXIF panel called "edition". A screenshot would help, especially if you're using LR in a language other than English.

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