Infra tweaks (#776)

found an issue with the ray stuff where somehow ray seemingly wasn’t
raising RayTaskErrors but other exceptions. also fixes an issue with
quoting

src/levanter/infra/cli_helpers.py

@@ -1,6 +1,7 @@
 import argparse
 import base64
 import os
+import shlex
 import subprocess
 from typing import Optional
 
@@ -64,7 +65,7 @@ def make_docker_run_command(image_id, command, *, foreground, env, name="levante
         "docker",
         "run",
         "-t" if foreground else "-d",
-        f"--name={name}",
+        f"--name={shlex.quote(name)}",
         "--privileged",
         "--shm-size=32gb",
         "--net=host",
@@ -76,7 +77,9 @@ def make_docker_run_command(image_id, command, *, foreground, env, name="levante
     ]
 
     for k, v in env.items():
-        docker_command.extend(["-e", k + f"={str(v)}"])
+        v = shlex.quote(str(v))
+        k = shlex.quote(str(k))
+        docker_command.extend(["-e", f"{k}={v}"])
 
     docker_command.extend([image_id, *command])
     return docker_command

src/levanter/infra/ray_tpu.py

@@ -76,6 +76,7 @@ def run_on_pod(remote_fn: RemoteFunction | Callable, tpu_type: str) -> ray.Objec
 
     @ray.remote(resources={f"TPU-{tpu_type}-head": 1})
     def do_run(remote_fn) -> _TpuRunResult:
+        logging.basicConfig(level=logging.INFO)
         num_hosts = ray.util.accelerators.tpu.get_current_pod_worker_count()  # -> 4
         remote_fn, tpu_name = _redecorate_remote_fn_for_tpu(remote_fn, num_hosts)
 
@@ -92,6 +93,13 @@ def do_run(remote_fn) -> _TpuRunResult:
                 except Exception:
                     logger.exception("Failed to kill job after primary failure")
             return _handle_ray_error(info, e)
+        except Exception as e:
+            for f in futures:
+                try:
+                    ray.cancel(f)
+                except Exception:
+                    logger.exception("Failed to kill job after primary failure")
+            return TpuFailed(info, e)
 
     return do_run.remote(remote_fn)
 
@@ -144,12 +152,12 @@ def run_on_pod_resumable(remote_fn, tpu_type, max_retries_preemption=1e6, max_re
             out = ray.get(run_on_pod(remote_fn, tpu_type))
         except ray.exceptions.RayTaskError as e:
             problem = e
-            if "preempted" in str(e):
+            if "preempted" in str(e).lower():
                 num_preemptions += 1
                 logger.warning(f"Preempted {num_preemptions} times, {e}")
             else:
                 num_failures += 1
-                logger.warning(f"Failed {num_failures} times")
+                logger.warning(f"Failed {num_failures} times", exc_info=e)
             continue
         except Exception as e:
             problem = e