DISEASE CHARACTERISTICS: Patients with HLA identical family donors and any one of the following conditions documented by marrow aspiration and biopsy: -Acute leukemia refractory to induction treatment or after 1 or more relapses -Acute myeloid leukemia with t(9;22), -5/5q-, -7/7q-, and 11q23 involvement in first remission (not M4 or M5) -Acute lymphocytic leukemia with t(9;22) or t(4;11) in first remission -Myelodysplastic syndrome with greater than 5% bone marrow blasts -Chronic myeloid leukemia in accelerated phase or nonlymphoid blast crisis -Myeloma, chronic lymphocytic leukemia, non-Hodgkin's lymphoma, or Hodgkin's disease refractory to 2 lines of standard treatment or progression on standard treatment No evidence of active extramedullary disease