wsl --unmount cannot unmount paths with whitespaces

[andrea-reale]

Windows Version

Microsoft Windows [Version 10.0.22621.3155]

WSL Version

2.1.5.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.146.1-2

Distro Version

No response

Other Software

No response

Repro Steps

Invoke wsl --unmount <PATH> where PATH is the path to a vhdx file with one or more spaces.

It does not mattter if: a) the path exists or not b) the vhdx file is mounted or not in wsl

Expected Behavior

Let's focus on the simplest case - the case where the vhdx file does not even exist.

Expected:

# Without spaces
> wsl --unmount 'mydisk.vhdx'
The system cannot find the file specified.
Error code: Wsl/Service/DetachDisk/ERROR_FILE_NOT_FOUND

# With spaces
> wsl --unmount 'my disk.vhdx'
The system cannot find the file specified.
Error code: Wsl/Service/DetachDisk/ERROR_FILE_NOT_FOUND

Actual Behavior

(On Powershell 7.4.1)

Actual:

# Without spaces
> wsl --unmount 'mydisk.vhdx'
The system cannot find the file specified.
Error code: Wsl/Service/DetachDisk/ERROR_FILE_NOT_FOUND

# With spaces
> wsl --unmount 'my disk.vhdx'
The filename, directory name, or volume label syntax is incorrect.
Error code: Wsl/0x8007007b

Note that I am focusing on the case of a disk that does not exist because it is the simplest to reproduce.

The real impact of this bug is that disks that have a space in their path or name cannot be unmounted. On the contrary, wsl --mount --vhd works as expected on paths with spaces.

Diagnostic Logs

No response

[github-actions]

Logs are required for review from WSL team

If this a feature request, please reply with '/feature'. If this is a question, reply with '/question'.
Otherwise please attach logs by following the instructions below, your issue will not be reviewed unless they are added. These logs will help us understand what is going on in your machine.

How to collect WSL logs

Download and execute collect-wsl-logs.ps1 in an administrative powershell prompt:

Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/WSL/master/diagnostics/collect-wsl-logs.ps1" -OutFile collect-wsl-logs.ps1
Set-ExecutionPolicy Bypass -Scope Process -Force
.\collect-wsl-logs.ps1

The scipt will output the path of the log file once done.

Once completed please upload the output files to this Github issue.

Click here for more info on logging
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View similar issues

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it!

Closed similar issues:

• VHDX cannot be detached with full path (#10771), similarity score: 0.76

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[andrea-reale]

/emailed-logs

[github-actions]

Diagnostic information

Found '/emailed-logs', adding tag 'emailed-logs'

[zcobol]

wsl --unmount will unmount (all drives) successfully:

PS E:\> wsl --mount --name mydrive --vhd '\\?\E:\test\my drive1.vhd' --bare
The operation completed successfully.
PS E:\> wsl.exe --unmount '\\?\E:\test\my drive1.vhd'
The filename, directory name, or volume label syntax is incorrect.
Error code: Wsl/0x8007007b
PS E:\> wsl.exe --unmount
The operation completed successfully.

What's noticeable is that mount works, no complain because of space in the path:

[Thu Apr 11 10:19:59 2024] sd 0:0:0:3: [sdd] Synchronizing SCSI cache
[Thu Apr 11 10:20:16 2024] scsi 0:0:0:3: Direct-Access     Msft     Virtual Disk     1.0  PQ: 0 ANSI: 5
[Thu Apr 11 10:20:16 2024] sd 0:0:0:3: Attached scsi generic sg3 type 0
[Thu Apr 11 10:20:16 2024] sd 0:0:0:3: [sdd] 4194304 512-byte logical blocks: (2.15 GB/2.00 GiB)
[Thu Apr 11 10:20:16 2024] sd 0:0:0:3: [sdd] Write Protect is off
[Thu Apr 11 10:20:16 2024] sd 0:0:0:3: [sdd] Mode Sense: 0f 00 00 00
[Thu Apr 11 10:20:16 2024] sd 0:0:0:3: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[Thu Apr 11 10:20:16 2024] sd 0:0:0:3: [sdd] Attached SCSI disk
[Thu Apr 11 10:20:32 2024] sd 0:0:0:3: [sdd] Synchronizing SCSI cache
[Thu Apr 11 10:20:39 2024] mini_init (132): drop_caches: 1 

[benhillis]

Fixed with https://github.com/microsoft/WSL/releases/tag/2.2.3.