nfs

NFS服务

谁说我不能喝 提交于 2019-12-06 05:43:16
NFS简介 NFS:Network File System网络文件系统,基于内核的文件系统。Sun公司开发,通过使用NFS,用户和程序可以像访问本地文件一样访问远端系统上的文件,基于RPC(Remote Procedure Call Protocol远程过程调用)实现 RPC采用C/S模式。客户机请求程序调用进程发送一个有进程参数的调用信息到服务进程,然后等待应答信息。在服务器端,进程保持睡眠状态直到调用信息到达为止。当一个调用信息到达,服务器获得进程参数,计算结果,发送答复信息,然后等待下一个调用信息,最后,客户端调用进程接收答复信息,获得进程结果,然后调用执行继续进行。 NFS优势:节省本地存储空间,将常用的数据如:home目录,存放在一台NFS服务器上且可以通过网络访问,那么本地终端将减少自身存储空间的使用。 RPC的主要功能就是在知道服务器端的每个NFS功能所对应的端口号,并且告诉客户端。让客户端可以连接到正确的服务器端口上去。那么RPC是如何知道每个NFS的端口号呢?这是因为当服务器在启动NFS时会随机使用多个端口,并主动向RPC注册,因此RPC可以知道每个端口对应的NFS功能。而RPC又是固定使用111端口来监听用户端的请求并回答客户端正确的NFS端口号。所以NFS服务器需要先启用RPC,然后再启动NFS。 NFS配置 1、部署环境 服务器端:CentOS7.7 192

nfs服务的讲解

断了今生、忘了曾经 提交于 2019-12-06 04:55:59
第 4 章 nfs 存储服务的搭建 58 4.1 nfs 服务的介绍 58 4.1.1 nfs 的作用 58 4.2 nfs 存储相比备份服务的优点 59 4.3 nfs 服务的部署 60 4.3.1 服务端的部署 60 4.3.2 客户端的部署 64 4.5 nfs 服务的常见参数 68 4.5.1 all_squash 和 no_all_squash 的演示 68 4.6 nfs 服务常见的命令和文件 72 4.7 客户端 mount 挂载常用的参数和文件 72 4.7.1 参数 72 4.7.2 文件 73 4.8 影响数据存储的原因 73 4.8.1 演示配置文件有子级和父级目录的时候出现的问题 74 4.9 nfs 服务的问题 76 4.9.1 clnt_create: RPC: Port mapper failure - Unable to receive: errno 113 (No route to host) 76 4.9.2 The rpcbind failure error 77 4.9.3 The server not responding error 77 4.9.4 The NFS client fails a reboot error 77 4.9.5 The service not responding error 78 4.9.6 The

How does IBM's RDZ running on a PC access the mainframe's file system?

别来无恙 提交于 2019-12-06 04:39:17
I hear repeatedly that while NFS-style files systems are available on IBM mainframes, they are often not enabled, presumably to minimize the security risks of the mainframe vis-a-vis the rest of the world. Given that I'd like to produce PC-based tools that reach out and process files on the mainframe, this makes a simple problem ("open NFS file '\mainframe\foo'") much harder; what can I count on to provide file system access in a networked enviroment? (Linux systems offer NFS via Samba pretty much as standard, so this is easy). IBM offers Rational Developer for Z, an Eclipse variant used by

mount -t nfs vs cifs

邮差的信 提交于 2019-12-06 04:20:21
问题 I had a requirement to mount a NFS. After several trial and errors, I could mount a NFS file system from NAS on my Linux system. We were also evaluating if cifs can be used when NFS does not work. man pages were too confusing and could not find any lucid explanation on web. My question is - if NFS is a problem can mount -t cifs be used in place ? Is cifs always available as replacement for nfs. 回答1: CIFS is not always available (but often is). When it works, NFS works better for unixy clients

Centos. Mac 上 nfs 搭建

我的梦境 提交于 2019-12-06 02:23:05
centos 关闭fiewalld,selinux yum install yum install nfs-utils portmap vim /etc/exports 文件写入时使用anonuid用户写入owner,anongid组写入文件,用户或组id在/etc/passwd里面找 添加内容:/home *(insecure,rw,async,no_root_squash,anonuid= 65534,anongid=65534) :wq service.rpcbind start service nfs start Mac sudo mount -t nfs -o resvport,rw centos:/home /rhome 来源: https://www.cnblogs.com/xiaoyongyang/p/11956871.html

How to ensure a safe file sync with sqlite and NFS

跟風遠走 提交于 2019-12-06 01:38:54
I have recently converted my workspace file format for my application to sqlite. In order to ensure robust operation on NFS I've used a common update policy, I do all modifications to a copy stored in a temp location on the local harddisk. Only when saving do I modify the original file (potentially on NFS) by copying over the original file with the temp file. I only open the orginal file to keep an exclusive lock on it so it someone else tries to open they will be warned that someone else is using it. The problem is this: When I go to save my temp file back over the original file I must

NFS

社会主义新天地 提交于 2019-12-05 23:38:00
一、什么是 NFS ?   NFS 是 Network File System 的缩写,即网络文件系统。一种使用于分散式文件系统的协定,由 Sun 公司开发,于 1984 年向外公布。功能是通过网络让不同的机器、不同的操作系统能够彼此分享个别的数据,让应用程序在客户端通过网络访问位于服务器磁盘中的数据,是在类 Unix 系统间实现磁盘文件共享的一种方法   它的主要功能是通过网络让不同的机器系统之间可以彼此共享文件和目录。 NFS 服务器可以允许 NFS 客户端将远端 NFS 服务器端的共享目录挂载到本地的 NFS 客户端中。在本地的 NFS 客户端的机器看来, NFS 服务器端共享的目录就好像自己的磁盘分区和目录一样。一般客户端挂载到本地目录的名字可以随便,但为方便管理,我们要和服务器端一样比较好。 NFS 一般用来存储共享视频,图片等静态数据。 二、 NFS 挂载原理   NFS 是通过网络来进行服务端和客户端之间的数据传输。两者之间要传输数据就要有想对应的网络端口来进行传 输。 NFS 服务器到底使用什么网络端口来传输数据的, NFS 服务器端其实是随机选择端口来进行数据传输。那 NFS 客户端又是如何知道 NFS 服务器端到底使用的是哪个端口呢?其实 NFS 服务器时通过远程过程调用( remote procedure call 简称 RPC )协议 / 服务来实现的

Can't write to FIFO file mouted via NFS

不问归期 提交于 2019-12-05 22:49:50
问题 I'm trying to write to FIFO file locate on NFS mount and it blocks. What could be the problem? My /etc/export: /tmp/test/ 10.0.0.0/24(rw,no_root_squash,async) ls /tmp/test on NFS server and client is the same prw--w--w- 1 root root 0 2009-06-24 17:28 ui-input and I'm writing as root Thanks. 回答1: A FIFO is meant to be an inter-process communication mechanism. By trying to export the FIFO via NFS, you are asking the kernel to treat the local inter-process communication as more of a network

3 Ways to Force Unmount in Linux Showing “device is busy”

感情迁移 提交于 2019-12-05 22:32:16
3 Ways to Force Unmount in Linux Showing “device is busy” Updated August 8, 2019 By Bobbin Zachariah LINUX HOWTO , TROUBLESHOOTING When you do an NFS mount, it sometimes shows "device is busy” status, in such case we need to perform force unmount in a graceful way. There are different ways and options we can try out if normal nfs unmount fails. Scenario In our scenario, we have created /var/linoxide directory for the mount. When we try to umount the remote partition, we have an error message. Good to read on NFS Mount Options in Linux . You can all the mounted folders with the df command # df

Raspberry Pi 挂载

纵饮孤独 提交于 2019-12-05 18:53:17
参考 Configure NFS Server and NFS Client Raspberry Pi http://www.htpcguides.com/configure-nfs-server-and-nfs-client-raspberry-pi/ How do I mount directories from other Linux/Unix/BSD servers? How do I mount an NFS share? http://www.raspbian.org/RaspbianFAQ mount.cifs — mount using the Common Internet File System (CIFS) https://www.samba.org/samba/docs/man/manpages-3/mount.cifs.8.html fstab ( https://wiki.archlinux.org/index.php/Fstab ) Raspberry Pi 配置 nfs server 和 nfs client (主要用于Linux不同系统之间相互挂载) 配置 NFS Server 安装 NFS server 组件 sudo apt-get install nfs-common nfs-server -y or sudo apt-get install