Learn how to transfer an entire file system on a live system, including how to create, copy, and re-enable the new file system. If you have a UNIX® disk or system failure or simply fill up your file system, then you need to create a new partition and file system and copy over the contents. You might even need to mount the new partition in place to preserve the location of vital files and components. To add further complications, you need to do this on a live system, where you'd need to preserve file permissions, ownership, and possibly named pipes and other components. Effectively transferring these components and retaining all of this information is a vital part of the migration process.
Read more at : IBM developerWorks
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