diff --git a/image/lxd.go b/image/lxd.go
index a818b89..ac8b21d 100644
--- a/image/lxd.go
+++ b/image/lxd.go
@@ -114,7 +114,7 @@ func (l *LXDImage) createMetadata() error {
 
 	l.Metadata.Architecture = l.definition.Image.Architecture
 	l.Metadata.CreationDate = time.Now().UTC().Unix()
-	l.Metadata.Properties["architecture"] = l.definition.Image.MappedArchitecture
+	l.Metadata.Properties["architecture"] = l.definition.Image.ArchitectureMapped
 	l.Metadata.Properties["os"] = l.definition.Image.Distribution
 	l.Metadata.Properties["release"] = l.definition.Image.Release
 	l.Metadata.Properties["variant"] = l.definition.Image.Variant
diff --git a/shared/definition.go b/shared/definition.go
index 023db6a..fed971a 100644
--- a/shared/definition.go
+++ b/shared/definition.go
@@ -9,6 +9,7 @@ import (
 	"time"
 
 	lxd "github.com/lxc/lxd/shared"
+	lxdarch "github.com/lxc/lxd/shared/osarch"
 
 	"github.com/lxc/lxd/shared"
 )
@@ -24,15 +25,19 @@ type DefinitionPackages struct {
 
 // A DefinitionImage represents the image.
 type DefinitionImage struct {
-	Description        string `yaml:"description"`
-	Distribution       string `yaml:"distribution"`
-	Release            string `yaml:"release,omitempty"`
-	Architecture       string `yaml:"architecture,omitempty"`
-	Expiry             string `yaml:"expiry,omitempty"`
-	Variant            string `yaml:"variant,omitempty"`
-	Name               string `yaml:"name,omitempty"`
-	Serial             string `yaml:"serial,omitempty"`
-	MappedArchitecture string `yaml:"mapped_architecture,omitempty"`
+	Description  string `yaml:"description"`
+	Distribution string `yaml:"distribution"`
+	Release      string `yaml:"release,omitempty"`
+	Architecture string `yaml:"architecture,omitempty"`
+	Expiry       string `yaml:"expiry,omitempty"`
+	Variant      string `yaml:"variant,omitempty"`
+	Name         string `yaml:"name,omitempty"`
+	Serial       string `yaml:"serial,omitempty"`
+
+	// Internal fields (YAML input ignored)
+	ArchitectureMapped      string `yaml:"architecture_mapped,omitempty"`
+	ArchitectureKernel      string `yaml:"architecture_kernel,omitempty"`
+	ArchitecturePersonality string `yaml:"architecture_personality,omitempty"`
 }
 
 // A DefinitionSource specifies the download type and location
@@ -224,12 +229,34 @@ func (d *Definition) Validate() error {
 		}
 	}
 
-	var err error
-	d.Image.MappedArchitecture, err = d.getMappedArchitecture()
+	// Mapped architecture (distro name)
+	archMapped, err := d.getMappedArchitecture()
 	if err != nil {
 		return err
 	}
 
+	d.Image.ArchitectureMapped = archMapped
+
+	// Kernel architecture and personality
+	archID, err := lxdarch.ArchitectureId(d.Image.Architecture)
+	if err != nil {
+		return err
+	}
+
+	archName, err := lxdarch.ArchitectureName(archID)
+	if err != nil {
+		return err
+	}
+
+	d.Image.ArchitectureMapped = archName
+
+	archPersonality, err := lxdarch.ArchitecturePersonality(archID)
+	if err != nil {
+		return err
+	}
+
+	d.Image.ArchitecturePersonality = archPersonality
+
 	return nil
 }
 
diff --git a/sources/alpine-http.go b/sources/alpine-http.go
index e52354c..5be670b 100644
--- a/sources/alpine-http.go
+++ b/sources/alpine-http.go
@@ -24,10 +24,10 @@ func NewAlpineLinuxHTTP() *AlpineLinuxHTTP {
 // Run downloads an Alpine Linux mini root filesystem.
 func (s *AlpineLinuxHTTP) Run(definition shared.Definition, rootfsDir string) error {
 	fname := fmt.Sprintf("alpine-minirootfs-%s-%s.tar.gz", definition.Image.Release,
-		definition.Image.MappedArchitecture)
+		definition.Image.ArchitectureMapped)
 	tarball := fmt.Sprintf("%s/v%s/releases/%s/%s", definition.Source.URL,
 		strings.Join(strings.Split(definition.Image.Release, ".")[0:2], "."),
-		definition.Image.MappedArchitecture, fname)
+		definition.Image.ArchitectureMapped, fname)
 
 	url, err := url.Parse(tarball)
 	if err != nil {
diff --git a/sources/archlinux-http.go b/sources/archlinux-http.go
index df96cea..59fdc79 100644
--- a/sources/archlinux-http.go
+++ b/sources/archlinux-http.go
@@ -24,7 +24,7 @@ func NewArchLinuxHTTP() *ArchLinuxHTTP {
 // Run downloads an Arch Linux tarball.
 func (s *ArchLinuxHTTP) Run(definition shared.Definition, rootfsDir string) error {
 	fname := fmt.Sprintf("archlinux-bootstrap-%s-%s.tar.gz",
-		definition.Image.Release, definition.Image.MappedArchitecture)
+		definition.Image.Release, definition.Image.ArchitectureMapped)
 	tarball := fmt.Sprintf("%s/%s/%s", definition.Source.URL,
 		definition.Image.Release, fname)
 
@@ -68,7 +68,7 @@ func (s *ArchLinuxHTTP) Run(definition shared.Definition, rootfsDir string) erro
 	// Move everything inside 'root.x86_64' (which was is the tarball) to its
 	// parent directory
 	files, err := filepath.Glob(fmt.Sprintf("%s/*", filepath.Join(rootfsDir,
-		"root", definition.Image.MappedArchitecture)))
+		"root", definition.Image.ArchitectureMapped)))
 	if err != nil {
 		return err
 	}
@@ -81,5 +81,5 @@ func (s *ArchLinuxHTTP) Run(definition shared.Definition, rootfsDir string) erro
 	}
 
 	return os.RemoveAll(filepath.Join(rootfsDir, "root",
-		definition.Image.MappedArchitecture))
+		definition.Image.ArchitectureMapped))
 }
diff --git a/sources/centos-http.go b/sources/centos-http.go
index 9c3f7c3..43779ef 100644
--- a/sources/centos-http.go
+++ b/sources/centos-http.go
@@ -30,10 +30,10 @@ func NewCentOSHTTP() *CentOSHTTP {
 func (s *CentOSHTTP) Run(definition shared.Definition, rootfsDir string) error {
 	baseURL := fmt.Sprintf("%s/%s/isos/%s/", definition.Source.URL,
 		strings.Split(definition.Image.Release, ".")[0],
-		definition.Image.MappedArchitecture)
+		definition.Image.ArchitectureMapped)
 
 	s.fname = getRelease(definition.Source.URL, definition.Image.Release,
-		definition.Source.Variant, definition.Image.MappedArchitecture)
+		definition.Source.Variant, definition.Image.ArchitectureMapped)
 	if s.fname == "" {
 		return fmt.Errorf("Couldn't get name of iso")
 	}
diff --git a/sources/debootstrap.go b/sources/debootstrap.go
index 468bda0..f7fbb14 100644
--- a/sources/debootstrap.go
+++ b/sources/debootstrap.go
@@ -27,8 +27,8 @@ func (s *Debootstrap) Run(definition shared.Definition, rootfsDir string) error
 		args = append(args, "--variant", definition.Source.Variant)
 	}
 
-	if definition.Image.MappedArchitecture != "" {
-		args = append(args, "--arch", definition.Image.MappedArchitecture)
+	if definition.Image.ArchitectureMapped != "" {
+		args = append(args, "--arch", definition.Image.ArchitectureMapped)
 	}
 
 	if len(definition.Source.Keys) > 0 {
diff --git a/sources/ubuntu-http.go b/sources/ubuntu-http.go
index 14cb6e2..1e7d71f 100644
--- a/sources/ubuntu-http.go
+++ b/sources/ubuntu-http.go
@@ -34,11 +34,11 @@ func (s *UbuntuHTTP) Run(definition shared.Definition, rootfsDir string) error {
 
 	if strings.ContainsAny(definition.Image.Release, "0123456789") {
 		s.fname = fmt.Sprintf("ubuntu-base-%s-base-%s.tar.gz",
-			definition.Image.Release, definition.Image.MappedArchitecture)
+			definition.Image.Release, definition.Image.ArchitectureMapped)
 	} else {
 		// if release is non-numerical, find the latest release
 		s.fname = getLatestRelease(definition.Source.URL,
-			definition.Image.Release, definition.Image.MappedArchitecture)
+			definition.Image.Release, definition.Image.ArchitectureMapped)
 		if s.fname == "" {
 			return fmt.Errorf("Couldn't find latest release")
 		}