[Bug]: Automatic (not on-demand) preview generation fills disk #45654
Description
⚠️ This issue respects the following points: ⚠️
- This is a bug, not a question or a configuration/webserver/proxy issue.
- This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
- Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
- I agree to follow Nextcloud's Code of Conduct.
Bug description
After upgrading to 29 I noticed that my previews folder grew over 250 GiB. I tried to investigate and found that Nextcloud automatically generates previews after an upload (using Nextcloud client) and not just on-demand (using the browser interface) as the old versions did. (I also have the impression that Nextcloud generated previews for all files with missing previews after the upgrade to 29.)
Maybe this is related to the new FilesMetadata API?
Steps to reproduce
- Upload a file using Nextcloud client
Expected behavior
No previews are generated automatically. I've many users who do not use the browser interface and, thus, generating lots pf previews is a waste of CPU time and space.
Generating previews only happens on-demand or can be configured to be on-demand only.
Installation method
Community Manual installation with Archive
Nextcloud Server version
29
Operating system
Debian/Ubuntu
PHP engine version
PHP 8.2
Web server
Apache (supported)
Database engine version
MariaDB
Is this bug present after an update or on a fresh install?
Upgraded to a MAJOR version (ex. 22 to 23)
Are you using the Nextcloud Server Encryption module?
None
What user-backends are you using?
- Default user-backend (database)
- LDAP/ Active Directory
- SSO - SAML
- Other
Configuration report
{
"system": {
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "29.0.1.1",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"forcessl": true,
"loglevel": 2,
"integrity.check.disabled": false,
"apps_paths": [
{
"path": "\/var\/www\/XXXXXXX\/apps",
"url": "\/apps",
"writable": true
}
],
"maintenance": false,
"theme": "",
"overwrite.cli.url": "https:\/\/XXXXXXX",
"overwriteprotocol": "https",
"activity_expire_days": 31,
"trusted_domains": [
"XXXXXXX"
],
"secret": "***REMOVED SENSITIVE VALUE***",
"trashbin_retention_obligation": "auto",
"htaccess.RewriteBase": "\/",
"mail_smtpmode": "sendmail",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"appstore.experimental.enabled": false,
"singleuser": false,
"log_rotate_size": 104857600,
"logtimezone": "Europe\/Berlin",
"mail_sendmailmode": "pipe",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"filelocking.enabled": true,
"memcache.local": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 0,
"timeout": 0
},
"mysql.utf8mb4": true,
"defaultapp": "files",
"updater.release.channel": "stable",
"default_phone_region": "DE",
"mail_smtpauthtype": "PLAIN",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "25",
"maintenance_window_start": 3,
"preview_imaginary_url": "***REMOVED SENSITIVE VALUE***",
"enabledPreviewProviders": [
"OC\\Preview\\Imaginary"
],
"preview_max_x": 1024,
"preview_max_y": 1024
}
}List of activated Apps
Enabled:
- activity: 2.21.1
- bruteforcesettings: 2.9.0
- calendar: 4.7.4
- circles: 29.0.0-dev
- cloud_federation_api: 1.12.0
- comments: 1.19.0
- contacts: 6.0.0
- contactsinteraction: 1.10.0
- dashboard: 7.9.0
- dav: 1.30.1
- deck: 1.13.0
- federatedfilesharing: 1.19.0
- federation: 1.19.0
- files: 2.1.0
- files_downloadlimit: 2.0.0
- files_external: 1.21.0
- files_pdfviewer: 2.10.0
- files_reminders: 1.2.0
- files_sharing: 1.21.0
- files_trashbin: 1.19.0
- files_versions: 1.22.0
- firstrunwizard: 2.18.0
- gpxpod: 5.0.18
- impersonate: 1.16.0
- logreader: 2.14.0
- lookup_server_connector: 1.17.0
- nextcloud_announcements: 1.18.0
- notifications: 2.17.0
- oauth2: 1.17.0
- onlyoffice: 9.2.2
- polls: 7.0.3
- provisioning_api: 1.19.0
- related_resources: 1.4.0
- serverinfo: 1.19.0
- settings: 1.12.0
- sharebymail: 1.19.0
- spreed: 19.0.1
- systemtags: 1.19.0
- tasks: 0.16.0
- text: 3.10.0
- theming: 2.4.0
- twofactor_backupcodes: 1.18.0
- updatenotification: 1.19.1
- user_status: 1.9.0
- viewer: 2.3.0
- weather_status: 1.9.0
- workflowengine: 2.11.0
Disabled:
- admin_audit: 1.19.0
- encryption: 2.17.0
- password_policy: 1.19.0 (installed 2.0.0)
- photos: 2.5.0 (installed 2.5.0)
- privacy: 1.13.0 (installed 1.0.0)
- recommendations: 2.1.0 (installed 0.4.0)
- support: 1.12.0 (installed 1.0.0)
- survey_client: 1.17.0 (installed 1.4.0)
- suspicious_login: 7.0.0
- twofactor_totp: 11.0.0-dev
- user_ldap: 1.20.0Nextcloud Signing status
No errors have been found.Nextcloud Logs
No response
Additional info
No response