rsync getting stuck while "building file list"

[Water Kingdom]

Hello Samba Team,

We are using rysnc utility for transferring ~90GB data across the machines.
We noticed that for small folders, rsync is working fine but the moment we
switch to 90GB folder, it gets stuck at "building file list". We even left
it running overnight e.g. 16 hours but it never came out.

We are using simple rsync syntax
#rsync -av --delete /data1 server2:/data

RPM version 2.68-3.1

Looking forward to your advice wrt to resolution or any other details
required.

Thanks in advance.

Regards,
- Waterkingdom
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