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Run without saving changes does not work for Apple VM #4201

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conath opened this issue Jul 10, 2022 · 4 comments · May be fixed by #3893
Open

Run without saving changes does not work for Apple VM #4201

conath opened this issue Jul 10, 2022 · 4 comments · May be fixed by #3893
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macOS macOS issues

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@conath
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conath commented Jul 10, 2022

From pyrosousa on Discord:

Does the "Run without saving changes" work for a macOS Monterrey guest on m1?

Maybe i'm misunderstanding its function, but i was testing with some text files on my desktop and all the changes i was making (pretty simple ones) were persisting.
@conath conath added the macOS macOS issues label Jul 10, 2022
@mikedowler
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+1 - I used "Run without saving changes" and installed some software. Rebooted the VM, and the software is still there.

@osy osy linked a pull request Aug 5, 2022 that will close this issue
WIP : Run as snapshot for apple vm #3893
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@jsiegers
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+1 As well

@Javdat
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Javdat commented Oct 1, 2022

Seems to work as intended in macOS Monterrey on M1. You have to exit the "disposable mode", or re-open it. Reboot doesn't seem to exit it, hence you continue within the same "disposable mode". Closing the window and starting again will start a fresh one.

@lewurm
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lewurm commented Jan 25, 2023

There is some API in the Apple hypervisor that sounds related:
https://developer.apple.com/documentation/virtualization/vzdiskimagestoragedeviceattachment/3857729-init
https://developer.apple.com/documentation/virtualization/vzdiskimagesynchronizationmode

VZDiskImageSynchronizationMode
case none
Disables data synchronization with the permanent storage.

But UTM doesn't specify a synchronizationMode currently:

UTM/Configuration/UTMAppleConfigurationDrive.swift

Lines 100 to 105 in 917ccf9

func vzDiskImage() throws -> VZDiskImageStorageDeviceAttachment? {
if let imageURL = imageURL {
return try VZDiskImageStorageDeviceAttachment(url: imageURL, readOnly: isReadOnly)
} else {
return nil
}

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WIP : Run as snapshot for apple vm PicoCreator/UTM
5 participants
@mikedowler @lewurm @conath @Javdat @jsiegers