RED HAT UNINSTALL realtek cd etc

Stopping Geo-replication

You can use the gluster command to stop Gluster Geo-replication (syncing of data from Master to Slave) in your environment.To stop Gluster Geo-replicationStop geo-replication between the hosts using the following command:# gluster volume geo-replication MASTER SLAVE stop For example:# gluster volume geo-replication Volume1 example.com:/data/remote_dir stop Stopping geo-replication session between Volume1 and example.com:/data/remote_dir has been successfulSee Chapter 17, Command Reference for more information about the gluster command.

Removing POSIX ACLs

To remove all the permissions for a user, groups, or others, use the following command:# setfacl -x ACL entry type fileFor example, to remove all permissions from the user antony:# setfacl -x u:antony /mnt/gluster/data/test-file


Deleting Volumes

To delete a volumeDelete the volume using the following command:# gluster volume delete VOLNAMEFor example, to delete test-volume:# gluster volume delete test-volume Deleting volume will erase all information about the volume. Do you want to continue? (y/n)Enter y to confirm the operation. The command displays the following:Deleting volume test-volume has been successful
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Para-virtualized drivers for Red Hat Enterprise Linux guests

Para-virtualized drivers for fully virtualized Red Hat Enterprise Linux guests are also available. Refer to Para-virtualized Drivers Guide or redhat.com/docs for the Red Hat Enterprise Linux Para-virtualized Drivers Guide.

KVM

This guide is about the Xen para-virtualized drivers for Windows.There are also para-virtualized drivers for KVM-based Windows guests available. The KVM para-virtualized drivers, the virtio drivers, are covered by the Red Hat Enterprise Linux Virtualization Guide.


d Hat Enterprise Linux contains virtualization packages and tools which provide system administrators with the means to run fully virtualized, unmodified, operating system guests on Red Hat Enterprise Linux. This provides companies with the ability to consolidate older systems onto newer, more efficient hardware. This reduces physical space and operating costs involved with powering and cooling older, less efficient systems. Full virtualization incurs worse I/O performance than a native, also known as bare-metal, installations of operating systems.Para-virtualization is a virtualization technique which involves running modified versions of operating systems. Para-virtualization has input/output (I/O) performance very close to running bare-metal, non-virtualized operating systems. Para-virtualization only works with certain operating systems.These two techniques, para-virtualization and full virtualization, can be combined to allow unmodified operating systems to receive near native I/O performance by using para-virtualized drivers on fully virtualized operating systems. This guide covers installation and configure the Red Hat Enterprise Linux para-virtualized drivers package for fully virtualized Microsoft Windows® guests.The para-virtualized drivers package contains storage and network device drivers for fully virtualized Microsoft Windows® guests. The drivers provide Microsoft Windows® guests running on Red Hat Enterprise Linux with enhanced disk and network I/O performance.This guide requires Red Hat Enterprise Linux 5.2 or later for the virtualization host system. Several versions of Microsoft Windows® are supported as fully virtualized guests. For a complete list of supported guests and other restrictions, refer to Chapter 2, Requirements and restrictions.

Para-virtualized d

d Hat Enterprise Linux contains virtualization packages and tools which provide system administrators with the means to run fully virtualized, unmodified, operating system guests on Red Hat Enterprise Linux. This provides companies with the ability to consolidate older systems onto newer, more efficient hardware. This reduces physical space and operating costs involved with powering and cooling older, less efficient systems. Full virtualization incurs worse I/O performance than a native, also known as bare-metal, installations of operating systems.Para-virtualization is a virtualization technique which involves running modified versions of operating systems. Para-virtualization has input/output (I/O) performance very close to running bare-metal, non-virtualized operating systems. Para-virtualization only works with certain operating systems.These two techniques, para-virtualization and full virtualization, can be combined to allow unmodified operating systems to receive near native I/O performance by using para-virtualized drivers on fully virtualized operating systems. This guide covers installation and configure the Red Hat Enterprise Linux para-virtualized drivers package for fully virtualized Microsoft Windows® guests.The para-virtualized drivers package contains storage and network device drivers for fully virtualized Microsoft Windows® guests. The drivers provide Microsoft Windows® guests running on Red Hat Enterprise Linux with enhanced disk and network I/O performance.This guide requires Red Hat Enterprise Linux 5.2 or later for the virtualization host system. Several versions of Microsoft Windows® are supported as fully virtualized guests. For a complete list of supported guests and other restrictions, refer to Chapter 2, Requirements and restrictions.

Para-virtualized d



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CD-ROM image on an inactive domain

This appendix describes a process which allows users to mount CD-ROM images on inactive domains.

Procedure A.1. Mounting CD-ROM images with virsh on inactive domains

Create an XML configuration file for your guest, replacing guestname with your guest domains name and windowsguest.xml:# virsh dumpxml guestname windowsguest.xmlAdd the following entry under the devices tag in the XML configuration file (windowsguest.xml in this example). You must change the source file= parameter to the location of the drivers .iso file and adjust the dev=parameter if you already have a hdb entry.<disk type='file' device='cdrom'> <driver name='file'/> <source file='/usr/share/xenpv-win-32bit/xenpv-win-32bit.iso'/> <target dev='hdb'/> <readonly/> </disk> Recreate the guest with the updated configuration file# virsh define windowsguest.xml The guest now has a CD-ROM device containing the para-virtualized drivers once rebooted.Once the Windows guest has booted, open My Computer and you should see the Red Hat Para-virtualized drivers disk. Click on the disk to continue the installation.


To detach a disk dynamically, use virsh with the detach-disk option:virsh detach-disk <domain> <device node> This example detaches a disk, /dev/xvdb, from a guest named wxp32:# virsh detach-disk wxp32 /dev/xvdb


 Configuring additional para-virtualized network devices

Follow the standard driver installation procedure from Chapter 3, Installing and configuring the para-virtualized drivers.Once the installation is complete and the para-virtualized drivers are activated, open Device Manager on your guest. Notice that there are two network devices: one labeled "rhelnet" and one labeled "Realtek". The Realtek device is the fully virtualized network device created by Xen. The Realtek device for the primary network interface should be marked disabled by the installation, if not disable it now.Shut down the guest before attaching additional network interface controllers.Add network interface controllers as required.Boot the guest and log in.Complete all "Install new hardware wizard" windows which appear after you have logged in.Open Device Manager. Two new network interface devices appear. Every new physical device has a "rhelnet" device and a "Realtek" device in Device Manager. Right click on every new Realtek device and select Disable.Your guest now uses the para-virtualized drivers for all network interface devices.You must use Procedure 4.1, "Configuring additional para-virtualized network devices" every time you install additional physical network interface devices if you require the para-virtualized drivers for your guests.

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Conventions

In this manual, certain words are represented in different fonts, typefaces, sizes, and weights. This highlighting is systematic; different words are represented in the same style to indicate their inclusion in a specific category. The types of words that are represented this way include the following:commandLinux commands (and other operating system commands, when used) are represented this way. This style should indicate to you that you can type the word or phrase on the command line and press Enter to invoke a command. Sometimes a command contains words that would be displayed in a different style on their own (such as file names). In these cases, they are considered to be part of the command, so the entire phrase is displayed as a command. For example:Use the cat testfile command to view the contents of a file, named testfile, in the current working directory.file nameFile names, directory names, paths, and RPM package names are represented this way. This style indicates that a particular file or directory exists with that name on your system. Examples:The .bashrc file in your home directory contains bash shell definitions and aliases for your own use.The /etc/fstab file contains information about different system devices and file systems.Install the webalizer RPM if you want to use a Web server log file analysis program.applicationThis style indicates that the program is an end-user application (as opposed to system software). For example:Use Mozilla to browse the Web.keyA key on the keyboard is shown in this style. For example:To use Tab completion to list particular files in a directory, type ls, then a character, and finally the Tab key. Your terminal displays the list of files in the working directory that begin with that character.key+combinationA combination of keystrokes is represented in this way. For example:The Ctrl+Alt+Backspace key combination exits your graphical session and returns you to the graphical login screen or the console.text found on a GUI interfaceA title, word, or phrase found on a GUI interface screen or window is shown in this style. Text shown in this style indicates a particular GUI screen or an element on a GUI screen (such as text associated with a checkbox or field). Example:Select the Require Password checkbox if you would like your screensaver to require a password before stopping.top level of a menu on a GUI screen or windowA word in this style indicates that the word is the top level of a pulldown menu. If you click on the word on the GUI screen, the rest of the menu should appear. For example:Under File on a GNOME terminal, the New Tab option allows you to open multiple shell prompts in the same window.Instructions to type in a sequence of commands from a GUI menu look like the following example:Go to Applications (the main menu on the panel) > Programming > Emacs Text Editor to start the Emacs text editor.button on a GUI screen or windowThis style indicates that the text can be found on a clickable button on a GUI screen. For example:Click on the Back button to return to the webpage you last viewed.computer outputText in this style indicates text displayed to a shell prompt such as error messages and responses to commands. For example:The ls command displays the contents of a directory. For example:Desktop about.html logs paulwesterberg.png Mail backupfiles mail reports The output returned in response to the command (in this case, the contents of the directory) is shown in this style.promptA prompt, which is a computer's way of signifying that it is ready for you to input something, is shown in this style. Examples:$#[stephen@maturin stephen]$leopard login:user inputText that the user types, either on the command line or into a text box on a GUI screen, is displayed in this style. In the following example, text is displayed in this style:To boot your system into the text based installation program, you must type in the text command at the boot: prompt.<replaceable>Text used in examples that is meant to be replaced with data provided by the user is displayed in this style. In the following example, <version-number> is displayed in this style:The directory for the kernel source is /usr/src/kernels/<version-number>/, where <version-number> is the version and type of kernel installed on this system.Additionally, we use several different strategies to draw your attention to certain pieces of information. In order of urgency, these items are marked as a note, tip, important, caution, or warning. For example:

Note

Remember that Linux is case sensitive. In other words, a rose is not a ROSE is not a rOsE.

Tip

The directory /usr/share/doc/ contains additional documentation for packages installed on your system.

Important

If you modify the DHCP configuration file, the changes do not take effect until you restart the DHCP daemon.

Caution

Do not perform routine tasks as root — use a regular user account unless you need to use the root account for system administration tasks.

Warning

Be careful to remove only the necessary partitions. Removing other partitions could result in data loss or a corrupted system environment.