Set LD_LIBRARY_PATH only for zpool subprocess, not globally

docker-compose.yml

@@ -17,4 +17,4 @@ services:
       - TZ=America/Denver
       - UVICORN_LOG_LEVEL=info
       - ZPOOL_BIN=/host/zpool
-      - LD_LIBRARY_PATH=/host/lib
+      - ZFS_HOST_LIB=/host/lib

services/zfs.py

@@ -15,10 +15,16 @@ async def get_zfs_pool_map() -> dict[str, str]:
     """
     pool_map = {}
     try:
+        env = os.environ.copy()
+        host_lib = os.environ.get("ZFS_HOST_LIB")
+        if host_lib:
+            env["LD_LIBRARY_PATH"] = host_lib
+
         proc = await asyncio.create_subprocess_exec(
             ZPOOL_BIN, "status", "-P",
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE,
+            env=env,
         )
         stdout, _ = await proc.communicate()
         if proc.returncode != 0: