Mounted FTP-Server shows files not correctly

[stefan-niedermann]

OC 7.0.2
Steps to reproduce:

1. Set up OC
2. Mount a FTP-Server into your OC instance
3. Access the FTP-Server via FTP
4. Create a test.txt-File on your FTP-Server via FTP
5. Reload OC
   Current behaviour: OC did not recognize that FTP-Folder-Content changed and still shows me the message "All empty here - load up new files!"
   Expected behaviour: After Pressing F5, OC should show me the created test.txt file

Possible cause: Caching?

[PVince81]

No, problem is that the FTP stream wrapper doesn't provide the mtime of the folders, so update detection cannot work this way. Need to either switch to an alternative FTP implementation (ie rewrite) or find another way to detect updates.

Mentioned here #6395 (comment)

But let's keep this ticket here as it's more explicit.

[MTRichards]

If I recall, there is a config file setting to update this behavior: on access, on first access, or never for a scan of the external storage system. Perhaps this is set to never?

oC 6 external storage, and FTP in particular, worked by scanning everything on access. So this is either a bug, or the config file needs to be set to on access.

[stefan-niedermann]

where exactly is the config file and which properties do i have to set? i would test this.

[MTRichards]

I see this in the config.sample.php here:
/*

• specifies how often the filesystem is checked for changes made outside owncloud
• 0 -> never check the filesystem for outside changes, provides a performance increase when it's certain that no changes are made directly to the filesystem
• 1 -> check each file or folder at most once per request, recomended for general use if outside changes might happen
• 2 -> check every time the filesystem is used, causes a performance hit when using external storages, not recomended for regular use
  /
  'filesystem_check_changes' => 1,
  / If true, prevent owncloud from changing the cache due to changes in the filesystem for all storage */
  'filesystem_cache_readonly' => false,

[MTRichards]

Line 319 in https://github.com/owncloud/core/blob/master/config/config.sample.php

[stefan-niedermann]

Since the default value seems to be 1, i don't think it's the problem. I do not override this value in my config.php.
I will tomorrow test, if it helps if i explicitly override the value with 1 or with 2. this would cause performance issues, but better bad performance than not working.
standby.

[mpeltier]

I have the same problem using 7.0.3 with filesystem_check_changes = 1 or 2. New file uploaded using an FTP client is not seen. If I run "php console.php files:scan --all", the file appears. As a workaround, I have set up a cron job in order to run this command periodically.

The cron doc says (http://doc.owncloud.org/server/7.0/admin_manual/configuration/background_jobs.html) "ownCloud plug-in applications register actions with cron.php automatically to take care of typical housekeeping operations, such as garbage collecting of temporary files or checking for newly updated files using filescan() for externally mounted file systems.". So is this supposed to work without additional external cron?

Thanks,
Mathieu

[MorrisJobke]

Duplicate of #11797