problem running fdupes

I just installed ipkg then fdupes. fdupes is running now but I'm unsure what I should see. It reads :Building file list, then reports:

重複資料刪除僅支援於Synology SSD 及Btrfs 儲存空間。您需要建立完全由Synology SSD 組成的儲存集區，並再建立至少一個Btrfs 儲存空間。 重複資料刪除僅能在儲存 ...

Step by step guide on how to find duplicate files on your Synology NAS device.

2、利用Linux下通用软件Fdupes和Jdupes进行重复文件删除. 我们必须承认群晖已经做的很好了，但是对于重复文件太多的人来说，那个存储空间分析局限 ...

Use a linux utility (fdupes) helps in locating and deleting (if you prefer) duplicate files; Use ipkg utility to install package (fdupes) to ...

QNAP有個Qfiling智能歸檔的功能，將Synology的NAS用SMB掛載到QNAP NAS中的File Station，就可以用QNAP的Qfiling功能做智能歸檔。 Qfiling有個選項會自動判斷，若重複檔名， ...

不知道fdupes怎麼用？ / $ fdupes --help 譬如說要刪video重複的 / $ fdupes -rd /volume1/video.

When I run fdupes within a docker container I run into issues where it picks up the u/synoresource and u/SYN files. I'm curious if there is ...

If you have btrfs and aren't encrypting your shared folders you can deduplicate the data in place with fdupes | duperemove —fdupes. Upvote 2