[Samba] CIFS client mounts meta ops 30 times slow than server

[Jeremy Allison]

On Fri, Mar 10, 2023 at 01:15:41AM +0800, Shenyue Chen via samba wrote:
>Hi Samba users,
>
>We would like to use samba for re-exporting our other distributed file
>system (BeeGFS). However, we found that the meta data operations are very
>slow (dir stat, removal etc.). On SMB client the performance is more than
>30x slow than on the SMB server. We would expect some slowness but this is
>too big a drop.
>
>This is the result on CIFS client
>
>$ sudo mdtest -b 10 -I 10 -L -z 2
>
>mdtest-3.3.0 was launched with 1 total task(s) on 1 node(s)
>Command line used: mdtest '-b' '10' '-I' '10' '-L' '-z' '2'
>FS: 1341.0 TiB   Used FS: 53.8%   Inodes: 0.0 Mi   Used Inodes: -nan%

Can you be a little clearer on your setup please ?

I'm assuming you are mounting the BeeGFS filesystem
on the Samba server, and then re-exporting that via
Samba to the Linux cifs client. Is that the case ?