multica-ai/multica · error

close temp for %s: %w

Error message

close temp for %s: %w

What it means

writeFileAtomic could not Close the temp file after write+chmod. On local disks Close rarely fails; on network filesystems it is where delayed write errors (ENOSPC, EIO, commit failures) surface, so the helper treats a failed close as a failed write and never renames a suspect file into place.

Source

Thrown at server/internal/daemon/execenv/hermes_home.go:930

// file and a prior file's looser permissions are replaced.
func writeFileAtomic(dst string, data []byte, perm os.FileMode) error {
	dir := filepath.Dir(dst)
	tmp, err := os.CreateTemp(dir, ".hermes-tmp-*")
	if err != nil {
		return fmt.Errorf("create temp for %s: %w", dst, err)
	}
	tmpName := tmp.Name()
	defer os.Remove(tmpName) // no-op once renamed
	if _, err := tmp.Write(data); err != nil {
		tmp.Close()
		return fmt.Errorf("write temp for %s: %w", dst, err)
	}
	if err := tmp.Chmod(perm); err != nil {
		tmp.Close()
		return fmt.Errorf("chmod temp for %s: %w", dst, err)
	}
	if err := tmp.Close(); err != nil {
		return fmt.Errorf("close temp for %s: %w", dst, err)
	}
	if err := os.Rename(tmpName, dst); err != nil {
		return fmt.Errorf("rename temp to %s: %w", dst, err)
	}
	return nil
}

View on GitHub (pinned to 2c0912b6ec)

Solutions

1. Check storage health and free space; for NFS look for 'commit failed' / EIO in dmesg.
2. Stabilize or remount the network share, then retry the task.
3. Prefer local volumes for env RootDir to avoid close-time write semantics entirely.
4. If it recurs on one file, inspect that path for a corrupted directory entry.

err := writeFileAtomic(dst, data, perm)
if err != nil && strings.Contains(err.Error(), "close temp") {
	// network FS may report delayed write errors at close — single retry after a beat
	time.Sleep(250 * time.Millisecond)
	err = writeFileAtomic(dst, data, perm)
}
return err

When it happens

Trigger: NFS async-write commit failure at close; ENOSPC reported only at flush; SMB disconnect mid-operation; filesystem gone read-only between write and close.

Common situations: Env RootDir on NFS/SMB shares under load or after a network blip; thinly-provisioned volume running out of space at commit time.

Related errors

• write temp for %s: %w
• runtime local skill import timed out
• create temp for %s: %w
• chmod temp for %s: %w
• rename temp to %s: %w

AI-assisted analysis of multica-ai/multica@2c0912b6ec (2026-08-15). Data as JSON: /api/errors/609a62a6cc16c50e. Report an issue: GitHub.