(a) A claimant, after instituting action to enforce a lien, shall record a notice of the commencement of action in the office in which the notice of lien was recorded. The notice shall be signed by the claimant or his attorney and shall refer to the notice of lien under which it is recorded, giving the recording office document location reference and date of recording of the notice of lien, the name of the owner and of the claimant, the amount of lien claimed, and an identifying reference to the action commenced.
(b) Only from the time of recording such notice shall a purchaser or encumbrancer of the property affected thereby be deemed to have constructive notice of the pendency of the action, and in that event only of its pendency against parties designated by their real names.