Exception is shown in owncloud.log when we have several versions of a file

[davitol]

Seems that a BackgroundJob throws this exception when we have several versions

Tested with oC 10.0.10 and files_versions: 1.3.0

{"reqId":"oXXc1qy9ZGYDguFHbcvA","level":3,"time":"2018-10-05T09:12:04+00:00","remoteAddr":"","user":"--","app":"no app in context","method":"--","url":"--","message":"Exception: {\"Exception\":\"OCP\\\\Files\\\\NotFoundException\",\"Message\":\"\\\/casr.txt.v1538730472 not found while trying to get owner\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/Filesystem.php(961): OC\\\\Files\\\\View->getOwner('\\\/casr.txt.v1538...')\\n#1 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Preview.php(1311): OC\\\\Files\\\\Filesystem::getOwner('\\\/casr.txt.v1538...')\\n#2 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Preview.php(1299): OC\\\\Preview::post_delete(Array, 'files\\\/')\\n#3 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/hook.php(105): OC\\\\Preview::post_delete_versions(Array)\\n#4 \\\/var\\\/www\\\/owncloud\\\/apps\\\/files_versions\\\/lib\\\/Storage.php(767): OC_Hook::emit('\\\\\\\\OCP\\\\\\\\Versions', 'delete', Array)\\n#5 \\\/var\\\/www\\\/owncloud\\\/apps\\\/files_versions\\\/lib\\\/Command\\\/Expire.php(60): OCA\\\\Files_Versions\\\\Storage::expire('\\\/casr.txt', 'admin')\\n#6 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Command\\\/CommandJob.php(34): OCA\\\\Files_Versions\\\\Command\\\\Expire->handle()\\n#7 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/BackgroundJob\\\/Job.php(57): OC\\\\Command\\\\CommandJob->run('O:33:\\\"OCA\\\\\\\\Files...')\\n#8 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/BackgroundJob\\\/QueuedJob.php(42): OC\\\\BackgroundJob\\\\Job->execute(Object(OC\\\\BackgroundJob\\\\JobList), Object(OC\\\\Log))\\n#9 \\\/var\\\/www\\\/owncloud\\\/cron.php(120): OC\\\\BackgroundJob\\\\QueuedJob->execute(Object(OC\\\\BackgroundJob\\\\JobList), Object(OC\\\\Log))\\n#10 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/Files\\\/View.php\",\"Line\":1717}"}
{"reqId":"oXXc1qy9ZGYDguFHbcvA","level":1,"time":"2018-10-05T09:12:04+00:00","remoteAddr":"","user":"--","app":"admin_audit","method":"--","url":"--","message":"Version delete \"\/admin\/files\/casr.txt.v1538730472\", trigger: versions quota exceeded [CLI]"}
{"reqId":"oXXc1qy9ZGYDguFHbcvA","level":1,"time":"2018-10-05T09:12:04+00:00","remoteAddr":"","user":"--","app":"files_versions","method":"--","url":"--","message":"Expire: \/casr.txt.v1538730472"}

[ownclouders]

GitMate.io thinks the contributors most likely able to help are @ownclouders, and @PVince81.

Possibly related issues are #20015 (Owncloud log file), #4366 (owncloud log file permissions), #21656 (An exception log message is shown in owncloud.log file when login with an Active Directory user.), #4503 (owncloud losing files!), and #25131 (Log is written in owncloud.log file when creating a folder).

[Linda-chan]

Looks like I have same issue. Just set up 10.0.10.4 from tarball on Ubuntu Server 18.04.1 LTS using official guide. During install I've had some issues with APCu so I thought it's because I misconfigured something trying to get away from all these warnings. But now I switched it to Redis and issue still there.

Interesting thing. Log messages are contain file names, but no files with these names are present on disk in data directory.

Another thing is synchronisation goes without problems. Looks like it's something with file versions.

[PVince81]

the issue with "not found while trying to get owner" is already known and is related to preview expiration.

closing as duplicate of #32346