mirror of https://github.com/docker/docs.git
				
				
				
			
		
			
				
	
	
		
			23 lines
		
	
	
		
			611 B
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			23 lines
		
	
	
		
			611 B
		
	
	
	
		
			Go
		
	
	
	
// +build !exclude_graphdriver_aufs
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package daemon
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import (
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	"github.com/dotcloud/docker/daemon/graphdriver"
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	"github.com/dotcloud/docker/daemon/graphdriver/aufs"
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	"github.com/dotcloud/docker/graph"
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	"github.com/dotcloud/docker/utils"
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)
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// Given the graphdriver ad, if it is aufs, then migrate it.
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// If aufs driver is not built, this func is a noop.
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func migrateIfAufs(driver graphdriver.Driver, root string) error {
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	if ad, ok := driver.(*aufs.Driver); ok {
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		utils.Debugf("Migrating existing containers")
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		if err := ad.Migrate(root, graph.SetupInitLayer); err != nil {
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			return err
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		}
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	}
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	return nil
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}
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