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okibcn / wslcompact

Compacts the size of the ever-growing WSL vhdx images.
https://github.com/okibcn/wslcompact
GNU General Public License v3.0
805 stars 19 forks source link

Cannot index into a null array. #7

Closed jerodway closed 1 year ago

jerodway commented 1 year ago

Has anyone encountered this error:

PS C:\Users\rodwjam> wslcompact WslCompact v7.0 2023.02.08 (C) 2023 Oscar Lopez wslcompact -h for help. For more information visit: https://github.com/okibcn/wslcompact

Distro's name: Ubuntu Image file: C:\Users\canso\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\ext4.vhdx Current size: 28691 MB Cannot index into a null array. At C:\Users\canso\scoop\apps\wslcompact\current\wslcompact.ps1:79 char:17

okibcn commented 1 year ago

@jerodway, do you have any special user configuration within your Ubuntu? the Estimated size is provided by wsl, so it might be a configuration colliding with it. Do you have other distros installed and running at the same time? It shouldn't be a issue, but I need more data to know what is going on in your system.

Please try these two commands from PowerShell:

wsl --system -d Ubuntu -e df /mnt/wslg/distro
wsl -d Ubuntu -e df /

And this one from within a WSL shell session inside Ubuntu:

\df /

They should return the same text, but for some reason, in your case, it is behaving differently. It would be nice if you copy-n-paste the output of these three tests into a reply here.

jerodway commented 1 year ago

Well, initially I could not get the first command to work at all. After a bit of playing around with it, I sorted out that problem and then wslcompact seemed to just start working. Sorry for bothering you

okibcn commented 1 year ago

@Aldo-f , we can continue the conversation here from the duplicated issue #8. It seems you have the same problem @jerodway had. I ask you to do the same test. We need to know what is going on.

@jerodway, maybe you could help with the solution you found in your system.

Thanks.

okibcn commented 1 year ago

@Aldo-f , these are the lines compatible with your distro's name. Do you have any special user configuration within your Ubuntu? the Estimated size is provided by wsl, so it might be a configuration colliding with it. Do you have other distros installed and running at the same time? It shouldn't be a issue, but I need more data to know what is going on in your system.

Please try these two commands from PowerShell:

wsl --system -d Ubuntu-18.04 -e df /mnt/wslg/distro
wsl -d Ubuntu-18.04 -e df /

And this one from within a WSL shell session inside Ubuntu-18.04:

\df /

They should return the same text, but for some reason, in your case, it is behaving differently. It would be nice if you copy-n-paste the output of these three tests into a reply here. Please.

Aldo-f commented 1 year ago

Not aware of any special configuration. Installed Lando with Hyperspace (so that installs docker, lando, ...)

Seems GUI support is disabled on host, don't know if that's a requirement.

I could however use wslcompact to reduce my ext4.vhdx from 15GB to 13GB. (many thanks ;) ) (had to use $env:TEMP="D:\tmp" 'cause I'm out of space on C: )


> wslcompact
 WslCompact v8.0 2023.02.13
 (C) 2023 Oscar Lopez
 wslcompact -h for help. For more information visit: https://github.com/okibcn/wslcompact

 Distro's name:  Ubuntu-18.04
 Image file:     C:\Users\aldo\AppData\Local\Packages\CanonicalGroupLimited.Ubuntu18.04onWindows_79rhkp1fndgsc\LocalState\ext4.vhdx
 Current size:   13479 MB
InvalidOperation: C:\Users\aldo\scoop\apps\wslcompact\current\wslcompact.ps1:79
Line |
  79 |  …             $estimated = ((wsl --system -d "$wsl_distro" -e df /mnt/w …
     |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Cannot index into a null array.
 Estimated size: 0 +/- 0 MB
 The estimated process time using an SSD is about 0 minutes.


> wsl --system -d Ubuntu-18.04 -e df /mnt/wslg/distro
GUI application support is disabled via C:\Users\aldo\.wslconfig or /etc/wsl.conf.
Error code: Wsl/Service/CreateInstance/WSL_E_GUI_APPLICATIONS_DISABLED

> wsl -d Ubuntu-18.04 -e df /
Filesystem      1K-blocks     Used Available Use% Mounted on
/dev/sdc       1055762868 13180200 988879196   2% /

Inside WSL


> \df /
Filesystem      1K-blocks     Used Available Use% Mounted on
/dev/sdc       1055762868 13180200 988879196   2% /
Details of my .wslconfig (GUI disabled) ``` # Settings apply across all Linux distros running on WSL 2 [wsl2] # Limits VM memory to use no more than 4 GB, this can be set as whole numbers using GB or MB memory=3GB # Sets the VM to use two virtual processors # processors=2 # Specify a custom Linux kernel to use with your installed distros. The default kernel used can be found at https://github.com/microsoft/WSL2-Linux-Kernel # kernel=C:\\temp\\myCustomKernel # Sets additional kernel parameters, in this case enabling older Linux base images such as Centos 6 # kernelCommandLine = vsyscall=emulate # Sets amount of swap storage space to 8GB, default is 25% of available RAM swap=8GB # Sets swapfile path location, default is %USERPROFILE%\AppData\Local\Temp\swap.vhdx # swapfile=C:\\temp\\wsl-swap.vhdx # Disable page reporting so WSL retains all allocated memory claimed from Windows and releases none back when free # pageReporting=false # Turn off default connection to bind WSL 2 localhost to Windows localhost localhostforwarding=true # Disables nested virtualization nestedVirtualization=false # Turns on output console showing contents of dmesg when opening a WSL 2 distro for debugging debugConsole=false # Disable use of GUI? guiApplications=false # <------ this line ```
okibcn commented 1 year ago

Thanks!

Finally We know what is going on. With this info I am sure I will be able to solve the issue of size detection.

okibcn commented 1 year ago

Release 8.5 fixes the issue.

Thanks for helping with it.