multica-ai/multica · error

write workspaces root marker: %w

Error message

write workspaces root marker: %w

What it means

Error "write workspaces root marker: %w" thrown in multica-ai/multica.

Source

Thrown at server/internal/daemon/execenv/context.go:83

			return fmt.Errorf("foreign file at workspaces root marker path %s; refusing to overwrite", path)
		}
		// Unparseable content is almost certainly a torn write of our own
		// marker; fall through to reclaim it below.
	} else if !os.IsNotExist(err) {
		// A real read error (e.g. a directory at the path) is not a signal we
		// can safely overwrite; surface it. Callers degrade non-fatally.
		return fmt.Errorf("read workspaces root marker %s: %w", path, err)
	}
	payload := taskContextMarkerFile{ManagedBy: TaskContextMarkerManagedBy}
	data, err := json.MarshalIndent(payload, "", "  ")
	if err != nil {
		return fmt.Errorf("marshal workspaces root marker: %w", err)
	}
	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
		return fmt.Errorf("create workspaces root marker dir: %w", err)
	}
	if err := writeWorkspacesRootMarkerAtomic(path, data); err != nil {
		return fmt.Errorf("write workspaces root marker: %w", err)
	}
	return nil
}

// writeWorkspacesRootMarkerAtomic writes data to path via a same-directory temp
// file plus a rename, so a concurrent reader observes either the old file or the
// complete new one — never a partial write. Mirrors the daemon-id / CLI-config
// write idiom (see writeDaemonIDFile). Perm is 0644 because the CLI's upward
// walk must be able to read the marker from a subprocess that may run under a
// different uid; the payload is non-secret.
func writeWorkspacesRootMarkerAtomic(path string, data []byte) error {
	tmp, err := os.CreateTemp(filepath.Dir(path), ".daemon_task_context-*.json.tmp")
	if err != nil {
		return fmt.Errorf("create temp workspaces root marker: %w", err)
	}
	tmpPath := tmp.Name()
	if _, err := tmp.Write(data); err != nil {
		tmp.Close()

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Check disk space and permissions for the workspaces root.

When it happens

Trigger: Thrown at server/internal/daemon/execenv/context.go:83 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of multica-ai/multica@2c0912b6ec (2026-08-15). Data as JSON: /api/errors/b5943fd136b6084a. Report an issue: GitHub.