Is it safe to schedule a "occ files:scan --all" and access or upload files?

ShapeShifter499 · May 5, 2019, 7:55pm

I originally posted to Reddit https://www.reddit.com/r/NextCloud/comments/bl1bv8/is_it_safe_to_schedule_a_occ_filesscan_all_and/ But I might get an answer here faster.

I’m finding that sometimes Nextcloud fails to notice file system changes even with “‘filesystem_check_changes’ => 1,” in my config.php settings. I’m looking around and I’m seeing online suggestions to run “occ files:scan --all” or “occ files:scan --unscanned --all” as a cron scheduled task.

Question is if I set one of those above and it happens to run as I’m uploading or accessing files, will there be any issue? Is it safe to access, upload, or modify files while a scan is in progress?

gas85 · May 6, 2019, 9:51am

It is 100% safe if you use webUI, NC Client or Webdav.

If you do this directly via filesystem - have no idea, but should be ok. In a worst case directly uploaded file fill not appears in NC till next file scan. Only in external storages NC will read FS when accessing the folder. You can also schedule this scan: https://docs.nextcloud.com/server/15/admin_manual/configuration_files/external_storage_configuration_gui.html#adding-files-to-external-storages

I used this script for me, to rescan only external storages:

github.com

GAS85/nextcloud_scripts/blob/master/nextcloud-file-sync.sh

#!/bin/bash

# By Georgiy Sitnikov.
#
# Will do external ONLY shares rescan for nextcloud and put execution information in NC log.
# If you would like to perform WHOLE nextcloud rescan, please add --all to command, e.g.:
# ./nextcloud-file-sync.sh --all
#
# AS-IS without any warranty

# Adjust to your NC installation
	# Your NC OCC Command path
Command=/var/www/nextcloud/occ
	# Your NC log file path
LogFile=/var/www/nextcloud/data/nextcloud.log
	# Your log file path for other output if needed
CronLogFile=/var/log/next-cron.log
	# If you want to perform cache cleanup, please change CACHE value to 1
CACHE=0
	# Your PHP location

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