Mounted network drive converting to Local drive when load is high

[dheeraj1729]

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Environment

• Windows version: Windows Server 2022 Standard
• Processor architecture: 64bit
• Dokany version: Reproducible in latest version
• Library type (Dokany/FUSE): Dokany

Check List

• I checked my issue doesn't exist yet
• My issue is valid with mirror default sample and not specific to my user-mode driver implementation
• I can always reproduce the issue with the provided description below.
• I have updated Dokany to the latest version and have reboot my computer after.
• I tested one of the last snapshot from appveyor CI

Description

I have an application that uses Dokan to mount a store located on a SAN drive. Occasionally, the mounted drive intermittently switches to a local drive. Although the issue can be reproduced using the mirror.exe tool, it does not occur consistently.

Steps to reproduce:
1.Mount a network drive.
2.Continuously refresh the File Explorer. Occasionally, the mounted drive will switch to a local drive if the load on network drive is high. (Another way to reproduce is by disconnecting the network drive after mounting)

Logs

dokan_local.txt
dokan_local1.txt

[Liryna]

Hi @dheeraj1729 ,

The drive cannot switch to local drive but I think what you see is that the request to get the volume information is slow and during that time the drive looks like that. I would suggest adding caching where possible to quickly complete the dokan requests.
Mirror does not have cache as it is a sample to learn how Dokan works.

[dheeraj1729]

Hi @Liryna

Thanks for the response, I’m exploring alternative approaches for implementing caching. Is there any way to control the wait time using a Dokan option in this scenario?

[Liryna]

Wait time is controlled by https://dokan-dev.github.io/dokany-doc/html/struct_d_o_k_a_n___o_p_t_i_o_n_s.html#ad953734dbc1baf170937eec8c1b4228b and https://dokan-dev.github.io/dokany-doc/html/group___dokan.html#ga1d5b0bf526fbf143a726fe1816fe7f15 if that's what you are looking for