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OPS235 Lab 2 - CentOS7 - HD2

311 bytes added, 19:28, 16 March 2017
Adding compression warning.
# Shut down your '''centos1''', '''centos2''', and '''centos3''' VMs. For ''centos2'' and ''centos3'', which are CLI-only, you can issue the following command as root to shutdown: <b><code><span style="color:#3366CC;font-size:1.2em;">shutdown -h</span></code></b>. Please be patient, the VMs will shut down!
# In your '''c7host''' VM, change to the images directory by issuing the command: <b><code><span style="color:#3366CC;font-size:1.2em;">cd /var/lib/libvirt/images/</span></code></b><br>Note the size of the files in this directory. What do these files contain?
# Make a compressed backup of your '''centos1.qcow2''' '''centos2.qcow2''', and '''centos3.qcow2''' files to your regular user's home directory by issuing each command (one at a time):<br><b><code><span style="color:#3366CC;font-size:1.2em;">gzip < centos1.qcow2 > ~YourRegularUsername/centos1.qcow2.backup.gz</span></code></b><br><b><code><span style="color:#3366CC;font-size:1.2em;">gzip < centos2.qcow2 > ~YourRegularUsername/centos2.qcow2.backup.gz</span></code></b><br><b><code><span style="color:#3366CC;font-size:1.2em;">gzip < centos3.qcow2 > ~YourRegularUsername/centos3.qcow2.backup.gz</span></code></b><br><br>{{Admon/important |Please be patient|It may look like the command prompt is stuck but it could take a while for gzip to compress an entire operating system. '''NOTE:''' Do NOT press '''&lt;ctrl&gt;c''' to cancel this process. If you do, your archive will become incomplete and your recovery will be corrupt.}}('''NOTE:''' Make certain to use the redirection signs "<" and ">" properly in the command!)<br><br>
# Compare the size of the compressed and original files (hint: use '''ls -lh'''). If file is very large (like 15GB), you didn't compress it and you need to remove that file and perform the previous step until you get it right!
# Start the '''''centos3''''' VM.

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