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docs: document cloned workspace volume size (#25706)

## Summary

Document `DOCKER_SANDBOXES_CLONED_WORKSPACE_SIZE` in the disk-space
troubleshooting guidance, including a `100g` clone-mode creation
example.

@netlify /ai/sandboxes/troubleshooting/

Preview:
[Troubleshooting](https://deploy-preview-25706--docsdocker.netlify.app/ai/sandboxes/troubleshooting/)

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This commit is contained in:
David Karlsson
2026-08-06 13:38:07 +02:00
committed by GitHub

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@@ -210,6 +210,15 @@ $ DOCKER_SANDBOXES_ROOT_SIZE=40g sbx run claude
`DOCKER_SANDBOXES_ROOT_SIZE` controls the root filesystem size. `DOCKER_SANDBOXES_DOCKER_SIZE`
controls the Docker data disk (`/var/lib/docker`) size. The two are independent — set both if needed.
For a [clone-mode sandbox](usage.md#clone-mode), set
`DOCKER_SANDBOXES_CLONED_WORKSPACE_SIZE` before creating the sandbox to
configure the cloned workspace volume capacity. The variable accepts
human-readable size strings such as `100g`:
```console
$ DOCKER_SANDBOXES_CLONED_WORKSPACE_SIZE=100g sbx run --clone claude
```
## Filesystem operations are slow in large repositories
Filesystem operations such as `git status`, `git log`, or directory scans can