zsync

NAME

zsync − Saves changes to the flash.

SYNOPSIS

zsync [-c][-f][<dir_or_file>] zsync [-c][-f][-t <file>] zsync [-c][-f][-z]

zsync [-c][-l]

DESCRIPTION

zsync is used to save a snapshot of the current file system to flash ROM. By default, zsync creates a compressed tar image of the files that have changed and saves the image in the flash ROM. The saved image is expanded on reboot. The saved compressed tar image is called an “overlay”.

If a directory parameter is given to zsync, the contents of the directory are saved instead of searching for updated files. The specific purpose of the <directory> parameter is for saving files that have been mounted with zmnt. Using the -toption allows a tar image created by zmnt -tto be saved.

To correct a corrupted file that is saved to flash ROM with zsync, first reboot with the -ioption (see Switch Maintenance). Use zmnt to put the corrupted file in the /mnt directory, open and correct the file, then zsync to the /mnt directory to save your changes and reboot.

There are two overlay areas: dynamic and custom. The dynamic overlay is the default. The custom overlay is used to create base configurations that are different then the base configuration. The custom overlay is written by using the -coption.

The -zoption zeros the overlay area, returning the switch to the factor configuration.

Specific files or directories can be excluded from saving to flash by zsync by including an entry in /etc/exclude. Likewise, existing entries in /etc/exclude such as /tmp can be removed in order to save those files to flash with zsync.

Ethernet Switch Blade User's Guide

release 3.2.2j

page 341

Page 341
Image 341
Znyx Networks bh5700 manual Zsync