Merge branch 'master' into github-3408-production-datamanager

[arvados.git] / services / fuse / bin / arv-mount

diff --git a/services/fuse/bin/arv-mount b/services/fuse/bin/arv-mount
index 1e5e9f0c9d258cb4fc59e526eb3bddc767b6902c..7f9c916c456f49e76744f78ba06b18af2eb1ed1b 100755 (executable)
--- a/services/fuse/bin/arv-mount
+++ b/services/fuse/bin/arv-mount
@@ -11,7 +11,8 @@ import time
 
 import arvados.commands._util as arv_cmd
 from arvados_fuse import *
-from arvados.api import SafeApi
+from arvados.safeapi import ThreadSafeApiCache
+import arvados.keep
 
 logger = logging.getLogger('arvados.arv-mount')
 
@@ -45,6 +46,13 @@ with "--".
     parser.add_argument('--logfile', help="""Write debug logs and errors to the specified file (default stderr).""")
     parser.add_argument('--foreground', action='store_true', help="""Run in foreground (default is to daemonize unless --exec specified)""", default=False)
     parser.add_argument('--encoding', type=str, help="Character encoding to use for filesystem, default is utf-8 (see Python codec registry for list of available encodings)", default="utf-8")
+
+    parser.add_argument('--file-cache', type=int, help="File data cache size, in bytes (default 256MiB)", default=256*1024*1024)
+    parser.add_argument('--directory-cache', type=int, help="Directory data cache size, in bytes (default 128MiB)", default=128*1024*1024)
+
+    parser.add_argument('--read-only', action='store_false', help="Mount will be read only (default)", dest="enable_write", default=False)
+    parser.add_argument('--read-write', action='store_true', help="Mount will be read-write", dest="enable_write", default=False)
+
     parser.add_argument('--exec', type=str, nargs=argparse.REMAINDER,
                         dest="exec_args", metavar=('command', 'args', '...', '--'),
                         help="""Mount, run a command, then unmount and exit""")
@@ -79,10 +87,17 @@ with "--".
         arvados.logger.setLevel(logging.DEBUG)
         logger.debug("arv-mount debugging enabled")
 
+    logger.info("enable write is %s", args.enable_write)
+
     try:
         # Create the request handler
-        operations = Operations(os.getuid(), os.getgid(), args.encoding)
-        api = SafeApi(arvados.config)
+        operations = Operations(os.getuid(),
+                                os.getgid(),
+                                encoding=args.encoding,
+                                inode_cache=InodeCache(cap=args.directory_cache),
+                                enable_write=args.enable_write)
+        api = ThreadSafeApiCache(apiconfig=arvados.config.settings(),
+                                 keep_params={"block_cache": arvados.keep.KeepBlockCache(args.file_cache)})
 
         usr = api.users().current().execute(num_retries=args.retries)
         now = time.time()
@@ -112,7 +127,7 @@ with "--".
         if dir_class is not None:
             operations.inodes.add_entry(dir_class(*dir_args))
         else:
-            e = operations.inodes.add_entry(Directory(llfuse.ROOT_INODE))
+            e = operations.inodes.add_entry(Directory(llfuse.ROOT_INODE, operations.inodes))
             dir_args[0] = e.inode
 
             e._entries['by_id'] = operations.inodes.add_entry(MagicDirectory(*dir_args))
@@ -147,10 +162,16 @@ From here, the following directories are available:
     opts = [optname for optname in ['allow_other', 'debug']
             if getattr(args, optname)]
 
+    # Increase default read/write size from 4KiB to 128KiB
+    opts += ["big_writes", "max_read=131072"]
+
     if args.exec_args:
         # Initialize the fuse connection
         llfuse.init(operations, args.mountpoint, opts)
 
+        # Subscribe to change events from API server
+        operations.listen_for_events(api)
+
         t = threading.Thread(None, lambda: llfuse.main())
         t.start()
 
@@ -182,12 +203,19 @@ From here, the following directories are available:
                 pass
         finally:
             subprocess.call(["fusermount", "-u", "-z", args.mountpoint])
+            operations.destroy()
 
         exit(rc)
     else:
         try:
             llfuse.init(operations, args.mountpoint, opts)
+
+            # Subscribe to change events from API server
+            operations.listen_for_events(api)
+
             llfuse.main()
         except Exception as e:
             logger.exception('arv-mount: exception during mount')
             exit(getattr(e, 'errno', 1))
+        finally:
+            operations.destroy()