yarnom
f0b50d13ea
Add Go/Postgres admin APIs, Angular admin UI, manual build flow, asset uploads, markdown import/export, configurable slug generation, and the Yar reading theme. Exclude local docs and generated development artifacts from version control.
41 lines
1.4 KiB
Markdown
41 lines
1.4 KiB
Markdown
---
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id: 53dd96ff-65e1-4ee9-8cb4-c8130e2eb0d5
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slug: nfs-mount-connection-timed-out
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title: '[NFS] mount: Connection timed out'
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summary: ""
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status: published
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tags: []
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cover: ""
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version: 1
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slug_source: manual
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slug_locked: true
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published_at: "2023-04-06T20:09:29+08:00"
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created_at: "2023-04-06T20:09:29+08:00"
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updated_at: "2025-12-31T23:58:09+08:00"
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---
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## 问题描述
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Linux 服务端和 Arm 开发板客户端进行 NFS 服务的连接。
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Linux 和 Arm 开发板之间能ping通，并且处于同一网端，且掩码、网口相同，但是在执行下面的程序时发生超时错误。
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在服务端的nfs配置完全正确的情况下，Arm开发板还是无法正确连接nfs服务器。
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```bash
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[root@FORLINX6410]# mount -t nfs -o nolock,hard 192.168.1.5:/home/yarnom/nfs /mnt
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mount: mounting 192.168.1.5:/home/yarnom/nfs on /mnt failed: Connection timed out
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```
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## 解决
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这个问题困扰了我两天终于在这个[帖子](https://stackoverflow.com/questions/45938202/mount-nfs-connection-timed-out-on-ubuntu-14-04-1-lts)里找到了解决方案。
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> Mount the NFS filesystem using the TCP protocol instead of the default UDP protocol. Many NFS servers only support UDP.
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这是在NFSv3中添加了对TCP协议的支持：
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总之，我尝试了下面的命令，使用了tcp协议：
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```bash
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$ mount -t nfs -o nolock,proto=tcp,port=2049 192.168.1.5:/home/yarnom/nfs /mnt
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```
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这个协议最终使我正确连接上了nfs服务器。
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