CREATE SMB operation when reading an existing file from an SMB share

Question

Hi,

I recently mounted an SMB share to my Linux VM, and every time the VM tries to read an existing file from the share, I'm charged for 3 operations: Create, Read, Close.

Why do we need a Create operation in case of an existing file, and why is this type of operation considered as a Write transaction?

AI Assistant says that we need a Create operation to create a file handle, but still, why is it a Write transaction in case of reading a file? That seems weird that when we read a file, a Write transaction happens.

Answer 1

@Artyom Gilevich Welcome to Microsoft Q&A Forum, Thank you for posting your query here!

This behavior is expected. The create is actually a file open, then the file is read and then it's closed. So it's three operations. Opening a file involves a write because the open/close handle information is written to disk. 
Refer to this article : What are transactions? https://learn.microsoft.com/en-us/azure/storage/files/understanding-billing#what-are-transactions

If you have any feedback, You may leave your feedback here. All the feedback you share in these forums will be monitored and reviewed by the Microsoft engineering teams responsible for building Azure.

---

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.