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Operating Systems Linux Red Hat RHEL 5.6 Slow rsync to NFS array Post 302501876 by lori_lin on Saturday 5th of March 2011 09:52:01 AM
Old 03-05-2011
why use the parameter -z ?
It will do compress by -z ,and its the reason for what u want .
 

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REDHAT-UPGRADE-TOOL(8)					  redhat-upgrade-tool User Manual				    REDHAT-UPGRADE-TOOL(8)

NAME
redhat-upgrade-tool - Red Hat Upgrade tool SYNOPSIS
redhat-upgrade-tool [OPTIONS] SOURCE DESCRIPTION
redhat-upgrade-tool is the Red Hat Upgrade tool. The redhat-upgrade-tool client runs on the system to be upgraded. It determines what packages are needed for upgrade and gathers them from the source(s) given. It also fetches and sets up the boot images needed to run the upgrade and sets up the system to perform the upgrade at next boot. The actual upgrade takes place when the system is rebooted, using the boot images set up by redhat-upgrade-tool. The upgrade initrd starts the existing system (mostly) as normal, lets it mount all the local filesystems, then starts the upgrade. When the upgrade finishes, it reboots the system into the newly-upgraded OS. OPTIONS
Optional arguments -h, --help Show a help message and exit. -v, --verbose Print more info. -d, --debug Print lots of debugging info. --debuglog DEBUGLOG Write debugging output to the given file. Defaults to /var/log/redhat-upgrade-tool.log. --reboot Automatically reboot to start the upgrade when ready. SOURCE These options tell redhat-upgrade-tool where to look for the packages and boot images needed to run the upgrade. At least one of these options is required. --device [DEV] Device or mountpoint of mounted install media. If DEV is omitted, redhat-upgrade-tool will scan all currently-mounted removable devices (USB disks, optical media, etc.) --iso ISO Installation image file. --network VERSION Online repos matching VERSION (a number or "rawhide") Multiple sources may be used, if desired. Additional options for --network --enablerepo REPOID Enable one or more repos (wildcards allowed). --disablerepo REPOID Disable one or more repos (wildcards allowed). --addrepo REPOID=[@]URL Add the repo at URL. Prefix URL with @ to indicate that the URL is a mirrorlist. --instrepo REPOID Get upgrader boot images from the repo named REPOID. The repo must contain a valid .treeinfo file which points to the location of usable kernel and upgrade images. Cleanup commands --resetbootloader Remove any modifications made to bootloader configuration. --clean Clean up everything written by redhat-upgrade-tool. EXAMPLES
redhat-upgrade-tool --network 7.0 --instrepo <repo URL> Upgrade to RHEL 7.0 by downloading all needed packages and data from the specified repository. redhat-upgrade-tool --device --network 7.0 Upgrade to RHEL 7.0 using install media mounted somewhere on the system, fetching updates from the network if needed. EXIT STATUS
0 Success. 1 Cancelled by user, failure writing files to disk, or other unknown error 2 Failed to download/copy files from the given SOURCE 3 RPM upgrade transaction test failed BUGS
The --iso image must be on a filesystem listed in /etc/fstab. AUTHORS
Will Woods <wwoods@redhat.com> redhat-upgrade-tool 11/08/2013 REDHAT-UPGRADE-TOOL(8)
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