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234 bytes added ,  12:54, 13 January 2019
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→‎Limitations: Support for DNS name resolution was added with commit a7c384f6eebcebc8b49655601956c18c51735672
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=== Pages deduplication ===
 
=== Pages deduplication ===
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''Main article: [[Memory images deduplication]].''
    
When iterative memory dumping feature (<code>criu pre-dump</code>) is used, memory is sent to page server a few times. The page server can automatically deduplicate pages, by punching holes in parent images where the child image is replacing an existing page. This functionality is turned on by <code>--auto-dedup</code> option of <code>criu page-server</code> command.
 
When iterative memory dumping feature (<code>criu pre-dump</code>) is used, memory is sent to page server a few times. The page server can automatically deduplicate pages, by punching holes in parent images where the child image is replacing an existing page. This functionality is turned on by <code>--auto-dedup</code> option of <code>criu page-server</code> command.
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Some other options might also be useful, such as:
 
Some other options might also be useful, such as:
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; --ps-socket $FD
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: Use provided file descriptor as socket for incoming connection. In this case <code>--address</code> and <code>--port</code> are ignored. Useful for intercepting page-server traffic e.g. to add encryption or authentication.
    
; -o|--logfile $FILE
 
; -o|--logfile $FILE
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* Currently it only works via TCP
 
* Currently it only works via TCP
* DNS names are not resolved for <code>--address</code> argument, only IP addresses are allowed
   
* No encryption, no compression, data is passed over network as is
 
* No encryption, no compression, data is passed over network as is
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* [[Iterative migration]]
 
* [[Iterative migration]]
 
* [[Incremental dumps]]
 
* [[Incremental dumps]]
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* [[Memory images deduplication]]
 
* [[Lazy migration]]
 
* [[Lazy migration]]
  
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