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nextcloud / previewgenerator

Nextcloud app to do preview generation in the background.
https://apps.nextcloud.com/apps/previewgenerator
GNU Affero General Public License v3.0
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failed to open stream: No such file or directory #308

Closed some-git-user closed 2 years ago

some-git-user commented 2 years ago

Some images are not displayed in the list preview. If I open the image preview I receive "Error loading IMG_....JPG" message.

The error images are not any special among the others. No higher resolution, or size. If I download these error images, I can open them in any picture preview application without problems.

My Nextcloud version is 24.0.3

I already checked on the user_usage_report app, but it's not installed. My 'preview_max_memory' is set to 512 'preview_max_memory' => '512',

Also tried to regenerate the previews: Remove the folder /mnt/sdb/nextcloud-data/appdata_/preview sudo -u www-data php7.4 occ files:scan-app-data (this will reset the preview generation logs) sudo -u www-data php7.4 occ preview:generate-all

I checked on the nextcloud.log and found following message for every error image: "message":"file_put_contents(/mnt/sdb/nextcloud-data/appdata_oc28yh33gjzb/preview/4/7/3/4/f/5/8/2646898/1536-2048-max.jpg): failed to open stream: No such file or directory at /usr/share/nginx/nextcloud/lib/private/Files/Storage/Local.php#296"

Screenshot_2022-08-05_09-34-47 Screenshot_2022-08-05_09-40-16

st3iny commented 2 years ago

I just tried to reproduce it on the exact same version that you are using and it worked fine.

Could you please provide more information from your Nextcloud log (e. g. the trace). Ideally, you could post the whole related JSON object from your nextcloud.log file.

some-git-user commented 2 years ago

I can't tell you why, but for now all previews are working fine. I didn't change anything in the setup, beside regular updates like Nextcloud 24.0.5 and preview generator 5.1.0.

Following cronjobs are running for www-data user:

0 0 * * *   php7.4 /usr/share/nginx/nextcloud/occ preview:generate-all
0 1 * * *   php7.4 /usr/share/nginx/nextcloud/occ files:scan --all > /dev/null 2>&1
*/15 * * * * php7.4 /usr/share/nginx/nextcloud/occ preview:pre-generate
*/15 * * * * php7.4 /usr/share/nginx/nextcloud/occ files:scan --unscanned --all > /dev/null 2>&1

Maybe anything I can optimize with the cronjobs?

st3iny commented 2 years ago

You could remove the files:scan entries because they are kind of expensive to run. They should only be in your cron jobs if you really need them (e. g. using external storage).

st3iny commented 2 years ago

I can't tell you why, but for now all previews are working fine. I didn't change anything in the setup, beside regular updates like Nextcloud 24.0.5 and preview generator 5.1.0.

That's great to hear! There probably were some changes in the server that fixed your problem.