Fix ZFS pool detection: bind-mount host zpool binary and libs

docker-compose.yml

@@ -10,12 +10,11 @@ services:
       - /dev:/dev
       - /sys:/sys:ro
       - /run/udev:/run/udev:ro
-      - /usr/sbin/zpool:/usr/sbin/zpool:ro
-      - /usr/sbin/zfs:/usr/sbin/zfs:ro
-      - /usr/lib/libzfs.so.6:/usr/lib/libzfs.so.6:ro
-      - /usr/lib/libnvpair.so.3:/usr/lib/libnvpair.so.3:ro
-      - /usr/lib/libuutil.so.3:/usr/lib/libuutil.so.3:ro
-      - /usr/lib/libzfs_core.so.3:/usr/lib/libzfs_core.so.3:ro
+      - /usr/sbin/zpool:/host/zpool:ro
+      - /usr/sbin/zfs:/host/zfs:ro
+      - /lib/x86_64-linux-gnu:/host/lib:ro
     environment:
       - TZ=America/Denver
       - UVICORN_LOG_LEVEL=info
+      - ZPOOL_BIN=/host/zpool
+      - LD_LIBRARY_PATH=/host/lib

services/zfs.py

@@ -4,6 +4,9 @@ import logging
 
 logger = logging.getLogger(__name__)
 
+# Allow overriding the zpool binary path via env (for bind-mounted host tools)
+ZPOOL_BIN = os.environ.get("ZPOOL_BIN", "zpool")
+
 
 async def get_zfs_pool_map() -> dict[str, str]:
     """Return a dict mapping device names to ZFS pool names.
@@ -13,7 +16,7 @@ async def get_zfs_pool_map() -> dict[str, str]:
     pool_map = {}
     try:
         proc = await asyncio.create_subprocess_exec(
-            "zpool", "status", "-P",
+            ZPOOL_BIN, "status", "-P",
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE,
         )