mount

LXC(LinuX Container)之namespaec和cgroup

和自甴很熟 提交于 2019-12-01 10:22:45
LXC(LinuX Container)之namespaec和cgroup namespace概述 从操作系统级上实现了资源的隔离,它本质上是宿主机上的进程(容器进程),所以资源隔离主要就是指进程资源的隔离。实现资源隔离的核心技术就是 Linux namespace。这技术和很多语言的命名空间的设计思想是一致的(如 C++ 的 namespace)。 Linux的命名空间机制提供了一种资源隔离的解决方案。PID,IPC,Network等系统资源不再是全局性的,而是属于特定的Namespace。Linux Namespace机制为实现基于容器的虚拟化技术提供了很好的基础,LXC(Linux containers)就是利用这一特性实现了资源的隔离。不同Container内的进程属于不同的Namespace,彼此透明,互不干扰。 Linux内核支持的namespace类型 Linux内核里面实现了7种不同类型的namespace。 名称 宏定义 隔离内容 Cgroup CLONE_NEWCGROUP Cgroup root directory (since Linux 4.6) IPC CLONE_NEWIPC System V IPC, POSIX message queues (since Linux 2.6.19) Network CLONE_NEWNET Network

将iso mount 到nfs 目录问题

≡放荡痞女 提交于 2019-12-01 10:03:36
最近有个需求,需要在多台系统安装程序,安装文件是iso 格式的,最普通的办法就是拷贝到其它系统,然后mount loop 到本地目录。 但是比较麻烦,而且当前已经有一个nfs 服务端了,于是想出一个办法: 先将iso 拷贝到nfs 服务端, 然后mount 到nfs 路径下 /nfsshare/ 下的一个子目录 iso mount -o loop iso /nfsshare/iso 到其它系统里再mount 这个nfs shell mount -t nfs4 192.168.4.5:/nfsshare /mnt 当我准备去mnt 目录直接安装时,发现/mnt/iso 文件为空 那么问题来了,这样不行吗? 当我在nfs服务端umount /nfsshare/iso 后,向iso 添加一个文件test,再mount 回去 此时在客户端,看不到iso 内容,却能看见刚才添加的文件test 所以说nfs 没有将loop iso 共享出去了 换个方式吧,先将安装文件iso 拷贝到 /nfsshare/iso , 再到其它系统里 mount呢 mount -t nfs4 192.168.4.5:/nfsshare /mnt # 先mount nfs mount -o loop /mnt/iso/install.iso /installdir # 再mount iso 跑到/install

Mount and unmount hard drives

▼魔方 西西 提交于 2019-12-01 09:22:41
How can I mount and unmount hard drives (platform independent, so no using Runtime to execute a hard-coded command) in the Java Programming Language? The answer is "Yes And No". You could not mount or unmount devices in java because each OS has their own methods to do this. BUT... you can provide java api that use adapter pattern for native interface. You should do some things: create Java interfaces that support mount/unmount commands create classes that implements interfaces as native methods create native implementations of this commands in C or other language. One implemantation for OS

改进根文件系统

穿精又带淫゛_ 提交于 2019-12-01 08:54:48
前面已经制作好了最小根文件系统,但是并不完善,下面来完善 一、增加 proc 虚拟文件系统,proc 是内核提供一个虚拟的文件系统,收集内核的信息   在串口中启动文件系统后可测试 用命令 ps 提示没有这个目录,那么我们创建一个 mkdir proc 再 ps 同样没有信息,手工挂载 mount -t proc none /proc 再次ps 可以看到有很多进程信息。   所以我们在制作根文件系统时就可以先做好,上面是手工挂载,我们做成自动挂载 进入根文件系统目录   mkdir proc   修改配置文件 在原来的基础上增加一项   vi etc/inittab   原来的内容是     console::askfirst:-/bin/sh   增加后的内容是     console::askfirst:-/bin/sh     ::sysinit:/etc/init.d/rcS   到这里我们增加了,但实际我们还没有,所以要他建     mkdir etc/init.d     vi etc/init.d/rcS       在这里可以把手工挂接的命令加进来,但我们采用另一种方法用 mount -a(这条命令就是去读etc/fstab这个配置文件的内容,去挂载) 所以我们这里写 mount -a 然后后面创建 etc/fstab       mount -a     vi

Mount R/W system in android application to edit Read Only files

孤者浪人 提交于 2019-12-01 08:25:52
问题 How can i within my application, to edit a file in /system/ Directory? I have to make the system R/W write? I ve tried: process = Runtime.getRuntime().exec("su"); os = new DataOutputStream(process.getOutputStream()); os.writeBytes("mount -o remount,rw /system\n"); os.writeBytes("exit\n"); os.flush(); process.waitFor(); and many many many others, without success. If anybody can help me, i greatly appreciated it! :) Also, if i finally made it, it will apply to all rooted phones? Or in some

Mount and unmount hard drives

醉酒当歌 提交于 2019-12-01 06:43:25
问题 How can I mount and unmount hard drives (platform independent, so no using Runtime to execute a hard-coded command) in the Java Programming Language? 回答1: The answer is "Yes And No". You could not mount or unmount devices in java because each OS has their own methods to do this. BUT... you can provide java api that use adapter pattern for native interface. You should do some things: create Java interfaces that support mount/unmount commands create classes that implements interfaces as native

how to mount a folder from lxc

人盡茶涼 提交于 2019-12-01 06:29:21
I have the lxc, it has a running application. To edit the code of this application on own computer(Ubuntu 13.10), I want to mount a directory lxc. How can this be done? for example /var/lib/lxc/ubuntu_12_04/rootfs/home/ mounted in /mnt/lxc Use "mount --bind" man 8 mount -B, --bind Remount a subtree somewhere else (so that its contents are available in both places). Example # make a mount point sudo mkdir /mnt/lxc # mount existing directory on the mount point mount --bind /var/lib/lxc/ubuntu_12_04/rootfs/home/ /mnt/lxc Notes Root has access to /var/lib/lxc/ubuntu_12_04/rootfs/home/ even without

how to mount a folder from lxc

烂漫一生 提交于 2019-12-01 05:27:37
问题 I have the lxc, it has a running application. To edit the code of this application on own computer(Ubuntu 13.10), I want to mount a directory lxc. How can this be done? for example /var/lib/lxc/ubuntu_12_04/rootfs/home/ mounted in /mnt/lxc 回答1: Use "mount --bind" man 8 mount -B, --bind Remount a subtree somewhere else (so that its contents are available in both places). Example # make a mount point sudo mkdir /mnt/lxc # mount existing directory on the mount point mount --bind /var/lib/lxc

Does Git generally choke on mounted drives? Or just Git GUI's?

孤街醉人 提交于 2019-12-01 04:28:32
I know I should be diehard and use git in the terminal, but I use a Git client on Mac called Sourcetree to make the whole thing just a bit more sexy. The problem is a new Synology NAS drive I've added to my setup. With one of the NAS shared folders mounted on my Mac, Sourcetree chokes when trying to stage/commit/push. My master branch is on GitHub, so I cloned a repo to the mounted drive using Sourcetree. As a quick test I edited an unimportant file, saved, and watched for unstaged changes in the client. Success so far; the edited file appears in the unstaged window of Sourcetree. I go to

Escape special characters in mount command

人盡茶涼 提交于 2019-12-01 04:18:41
I am trying to mount a windows shared folder on Mac OSX Mavericks. A simplistic user name and password worked fine mount -t smbfs //user2:password2@server1.mydomain.com/myproject ~/localmap On trying out the more valid user name and password I am getting errors that parsing URL failed. The details are Username: mydomain\user1 Password: A%b$c@d!e#f The command tried is mount -t smbfs //mydomain\user1:A%b\$c\@d\!e#f@server1.mydomain.com/myproject ~/localmap Based on what I found, $ and ! needs to be escaped. Need help on how to escape the special characters. Incidentally, using only the username