Chinese filenames blocking sync

I am facing issues with files that have names in traditional and simplified Chinese.
I did some searches online but I could find that much so I thought it may be easier to post here and see if anyone can help.
Basically with mac and pc client the synchronisation stuck at every file with Chinese name. I also experienced that with a .rar with the connection get cut. Of course, changing file names to normal english characters everything works but the point is that I need to be able to manage file named in Chinese.

Thank you in advance.


I assume you have already tried running the sync client with other locale settings (zh-CN)

Unfortunately no better idea so far.

Can you provide an example file and steps to reproduce?

Did you try it with ?

In that - connecting the client to and trying to sync the files there

Can you tell me how to do it,I could not find the config file of the client anywhere (I am using Mac)

I do not get error message, but I cannot see the file in the demo folder.

is it this?

I don’t know about mac, but isn’t mac-os based on linux?

Usually I start the trouble making app via shell-script, prefixed with the locale settings.

You might have to install the locate first. Then you could try something like

export LANG=zh-CN.UTF8
exec <whatever>

Maybe UTF8 isn’t a good selection. Instead of LANG, you could also try LC_ALL.

Yes, the problem is locare the file in MAC, online I found wrong info about its location

I could not mange to make it work!!!

Confirmed, in the demo it works.
I am thinking if the problem may be in the setting of my ownCloud installation, maybe in the language settings? Possible?



Does the .rar filename have chinese (or other non-English) characters too?

Are you running ownCloud on a shared hoster instead of a vserver/VM/server?

The ‘connection closed’ in unicode reminds me of

Did you create your MySQL DB with 4 byte characters?

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Hi guruz,
Yes, the .rar file has Chinese characters and now (I rebooted) I am getting “connection closed” per all the files with Chinese character in the name.

I am running ownCloud locally on a RaspberryPI3:

Server: Localhost via UNIX socket
Server type: MariaDB
Server version: 10.1.23-MariaDB-9+deb9u1 - Raspbian 9.0
Protocol version: 10
Server charset: UTF-8 Unicode (utf8)

Apache/2.4.25 (Raspbian)
Database client version: libmysql - mysqlnd 5.0.12-dev - 20150407
PHP extension: mysqliDocumentation curlDocumentation mbstringDocumentation
PHP version: 7.0.30-0+deb9u1

So that’s not the utf8mb4 character set, utf8mb4_bin collation mentioned in ?

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Sorry cannot really follow you, can you help me a bit more.

I did some changed and this is what I get if:
mysqladmin -u owncloud -p var | grep -E ‘character|collation’ | tr -s ’ ’

| character_set_client | utf8mb4 |
| character_set_connection | utf8mb4 |
| character_set_database | utf8mb4 |
| character_set_filesystem | binary |
| character_set_results | utf8mb4 |
| character_set_server | utf8mb4 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
| collation_connection | utf8mb4_unicode_ci |
| collation_database | utf8mb4_unicode_ci |
| collation_server | utf8mb4_unicode_ci |

I the only thing I have been unable to change is “character_set_system” and I have no idea of to make it since whenever I try adding


the result restarting the db server is always:
mysqladmin: unknown variable ‘character-set-server=utf8mb4’

Let me know if anyone can help, I am running mad on this;)))