<p dir="ltr"><br>
Hello All,</p>
<p dir="ltr">I started using criu from few days back. I have few quires after using CRIU for few weeks.</p>
<p dir="ltr">I would really appreciate your helping hands on understanding CRIU better.</p>
<p dir="ltr">1st Query:<br>
I failed to understand the difference between the live migration and disk-less migration.</p>
<p dir="ltr"> In live migration</p>
<p dir="ltr">●Take the snapshot of the process<br>
●Copy them into some shared folders.[involves creating images files of both memory and context and pasting/dumping at a directory ]</p>
<p dir="ltr"> In disk-less migration</p>
<p dir="ltr">●Take the snapshot of the process<br>
●Transfer the process memory related files[Transfer involves creating memory image files and pasting/dumping them on the restore side ] ->> this step looks like same as coping into shared folder in live migration<br>
●Copy process context image files using scp.</p>
<p dir="ltr"> I fail to understand the difference, can someone give a better understanding of the same.</p>
<p dir="ltr">2nd Query:<br>
I want to know about page-server, what does page-server do?How different it is from secure copying like scp.</p>
<p dir="ltr">3rd Query:<br>
What does live migration exactly means?<br>
My understanding after using CRIU for few weeks:<br>
■Process running on node 1<br>
■Checkpointthe process<br>
■Restore the process on the 2nd node</p>
<p dir="ltr">And the process/application/service under migration has downtime equivalent to time elapsed between checkpoint and restore.</p>
<p dir="ltr">Correct me if i am wrong.<br><br></p>
<p dir="ltr">Thanks,<br>
Prashanth Chillabatte</p>