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Changing the disk size in lima.yaml should resize the disk #1448

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jandubois opened this issue Apr 1, 2023 · 1 comment · May be fixed by #3437
Open

Changing the disk size in lima.yaml should resize the disk #1448

jandubois opened this issue Apr 1, 2023 · 1 comment · May be fixed by #3437
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enhancement New feature or request

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@jandubois
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Just running limactl edit does not change the actual disk image, I guess one has to run qemu-img manually (for now)

qemu-img resize ~/.lima/almalinux-8/diffdisk 30G

qemu-img info ~/.lima/almalinux-8/diffdisk

After that, it seems to have done the rest of the work on next start (changed it in the lima.yaml, to disk: "30GiB").

Originally posted by @afbjorklund in #1446 (reply in thread)

Of course it should only allow increasing the disk size, as reducing it will corrupt the existing partition.
@AkihiroSuda AkihiroSuda added the enhancement New feature or request label Apr 3, 2023
@afbjorklund afbjorklund mentioned this issue May 1, 2023
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@afbjorklund
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When doing the qemu-img resize, it does require a special option before attempting to shrink an image.

       `When shrinking images, the "--shrink" option must be given. This informs qemu-img that the user acknowledges all loss of data beyond the truncated image's end.`

Most of the work for these commands to work, has to be done inside the guest image (partioning/resize2fs)

Currently there might be some scripts in place, that will resize an ext4 partition to use the new space available.

@haytok haytok mentioned this issue Dec 21, 2023
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@shenki shenki mentioned this issue Apr 10, 2025
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@songponssw songponssw linked a pull request Apr 17, 2025 that will close this issue
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Fix: resize GuestOS disk songponssw/lima
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@jandubois @AkihiroSuda @afbjorklund