Set OverrideUID on virtiofs mounts for macOS ownership#111
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On macOS, libkrun's virtiofs FUSE server reports host-side file ownership to the guest. Without user.containers.override_stat xattrs, workspace files appear as the host UID (e.g. 501) and the sandbox user (1000) cannot write to nested directories or files. Set OverrideUID/OverrideGID on both the workspace mount and extra mounts (git objects). go-microvm walks the host path and sets the xattr on all entries before VM boot, making them appear as owned by the sandbox user inside the guest. Requires go-microvm with SetOverrideStatTree support (unreleased). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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JAORMX
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Apr 8, 2026
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Summary
OverrideUID/OverrideGIDon workspace and extra virtiofs mounts so libkrun reports correct ownership to the guest on macOSBlocked on: stacklok/go-microvm#64 being merged and tagged. The
OverrideUIDfield does not exist in go-microvm v0.0.30.Test plan
go.modto new versiontask testpassesbbox claude-codeon macOS, verify writes to nested files work without pre-set xattrs🤖 Generated with Claude Code