难道`No such file or directory`只能表示没有`No such file or directory`吗？

Question

我正在尝试使用 caffe 训练网络，但遇到找不到文件的异常：

I0111 11:19:27.339706  5151 layer_factory.hpp:76] Creating layer data
I0111 11:19:27.340117  5151 net.cpp:106] Creating Layer data
I0111 11:19:27.340126  5151 net.cpp:411] data -> data
I0111 11:19:27.340154  5151 net.cpp:411] data -> label
I0111 11:19:27.340165  5151 data_transformer.cpp:25] Loading mean file from: /home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/imagenet_mean_10biggest.binaryproto
F0111 11:19:27.340873  5157 db_lmdb.hpp:14] Check failed: mdb_status == 0 (2 vs. 0) No such file or directory
*** Check failure stack trace: ***
    @     0x7f7f1c8f35cd  google::LogMessage::Fail()
    @     0x7f7f1c8f5433  google::LogMessage::SendToLog()
    @     0x7f7f1c8f315b  google::LogMessage::Flush()
    @     0x7f7f1c8f5e1e  google::LogMessageFatal::~LogMessageFatal()
    @     0x7f7f1d032532  caffe::db::LMDB::Open()
    @     0x7f7f1cfe9966  caffe::DataReader::Body::InternalThreadEntry()
    @     0x7f7f1cfdfc25  caffe::InternalThread::entry()
    @     0x7f7f127285d5  (unknown)
    @     0x7f7f11fd66ba  start_thread
    @     0x7f7f1be6c82d  clone
    @              (nil)  (unknown)
Aborted (core dumped)

可能有各种各样的原因导致错误，但似乎确实存在这个特定文件。我已经将路径更改为绝对路径，检查了拼写（在这个确切的文件夹中确实有一个具有这个确切名称的文件）并仔细检查了文件的读写权限。
当文件看起来确实存在时，困难在于找到此错误的原因。我的意思是，还有什么可能是原因？
所以我的问题是：有人知道这个错误的原因是什么吗？

编辑：根据要求，ls -ltrh /home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/imagenet_mean_10biggest.binaryproto 的输出：

-rwxrwxr-x 1 myUser myUser 769K jan 10 16:39 /home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/imagenet_mean_10biggest.binaryproto

我假设 prototxt 文件的相关部分是：

name: "rfnn_ILSVRC2012_Small"
layer {
top: "data"
top: "label"
name: "data"
type: "Data"
data_param {
source: "/home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/ilsvrc12_train_lmdb_10biggest"
backend: LMDB
batch_size: 32
}
transform_param {
crop_size: 224
mirror: true
mean_file: "/home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class

/imagenet_mean_10biggest.binaryproto"
  }
  include: { phase: TRAIN }
}
layer {
  top: "data"
  top: "label"
  name: "data"
  type: "Data"
  data_param {
    source: "/home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/ilsvrc12_val_lmdb_10biggest"
    backend: LMDB
    batch_size: 32
  }
  transform_param {
    crop_size: 224
    mirror: false
    mean_file: "/home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/imagenet_mean_10biggest.binaryproto"
  }
  include: { phase: TEST }
}

Answer 1

你的 mean 文件确实存在，但这不是 caffe 抱怨的。
你的数据库文件 '/home/myUser/Documents/code/RFNN/data/ILSVRC2012/10class/ilsvrc12_train_lmdb_10biggest' 怎么样？它在正确的位置吗？

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TL;DR

Can No such file or directory only mean that there is No such file or directory?

是的。