/* * Some flags are not defined in <linux/nbd.h>, but are passed anyway. * These flags are sent from nbd-server to the client, and the client * passes them to the kernel unmodified after parsing. Both the client * and the kernel ignore flags unknown to them. */ /* The server supports flags */ NBD_FLAG_HAS_FLAGS (1 << 0) /* The export is read-only */ NBD_FLAG_READ_ONLY (1 << 1) /* The server supports NBD_CMD_FLUSH */ NBD_FLAG_SEND_FLUSH (1 << 2) /* The server supports NBD_CMD_FLAG_FUA (Force Unit Access) */ NBD_FLAG_SEND_FUA (1 << 3) /* The export is a rotational medium */ NBD_FLAG_ROTATIONAL (1 << 4) /* The server supports NBD_CMD_TRIM */ NBD_FLAG_SEND_TRIM (1 << 5) /* The server supports NBD_CMD_WRITE_ZEROES and NBD_CMD_FLAG_NO_HOLE */ NBD_FLAG_SEND_WRITE_ZEROES (1 << 6) /* The server supports NBD_CMD_FLAG_DF (don't fragment replies) */ NBD_FLAG_SEND_DF (1 << 7) /* The server supports multiple connections */ NBD_FLAG_CAN_MULTI_CONN (1 << 8) /* The server supports NBD_CMD_RESIZE (resizing the device) */ NBD_FLAG_SEND_RESIZE (1 << 9) /* The server supports NBD_CMD_CACHE */ NBD_FLAG_SEND_CACHE (1 << 10)