Weird behavior with ReFS?

If I try to create a file with “?” character in ReFS filesystem inside any folder through Explorer then it says “Folder or file does not exist” ??
I create a file and try to rename it with character(?) then it gives this error. “Folder or file does not exist” in ReFS.
and after that if you go to previous folder and then go inside again in folder it shows you the file.
and if you open this file then it says this file does not exist do you want to create it.
but everything works successfully in NTFS.
Steps :
1.Lets say you have volume D with Refs formatted. (I tried on 2012 R2 and windows 8.1)
2.you go inside and create one file say random.dat
3. try to rename it (replace “random” with “?” so you will make like ?.dat)
4. Now it gives “Folder or file does not exist”
5. Now if you are not seeing this file then open new window and go inside volume D.
6. Now you will see this file ?.dat
7. open with notepad now it will say “this file does not exist do you want to create”
8. now you say ok lets create.
9. Write some data inside that fille and close it.
10. now right click on file and see properties you will not be seeing create time and all and no allocation size.
Refs create problem only with this character (?,ascii value = 255). why ??
Is there any limitation??
And if you will use this character with any other character then we can create file , works fine.

I read about ReFS a lot still I did not get to know this behavior.

On 08/01/2014 06:43 AM, xxxxx@gmail.com wrote:

If I try to create a file with “ÿ” character in ReFS filesystem inside any folder through Explorer then it says “Folder or file does not exist” ??

This sounds like a bug we know about and are working on. NTFS and ReFS
are attempting to be selectively case sensitive and case preserving,
meaning they need to be able to accurately store and retrieve case
sensitively and also retrieve a random match for insensitive operations.
That random matching is harder than you might think.

Just to be clear, is the character 0x00FF, or is that truncation in
posting the message?

Thanks,

  • M

Yeah right, this character has ascii value as 255.

I am facing this problem on the file names which has “?” character in it.