Clarified what the 'Mapped device not found' exception really means. Fixed TODO. Some formatting to be closer to 80 chars
Clarified what the 'Mapped device not found' exception really means.
Fixed TODO.
Some formatting to be closer to 80 chars

tudorvio/nova,petrutlucian94/nova_dev,j-carpentier/nova,ted-gould/nova,tianweizhang/nova,gooddata/openstack-nova,viggates/nova,citrix-openstack-build/nova,petrutlucian94/nova,tanglei528/nova,openstack/nova,Stavitsky/nova,virtualopensystems/nova,klmitch/nova,sridevikoushik31/openstack,Metaswitch/calico-nova,berrange/nova,devoid/nova,isyippee/nova,shahar-stratoscale/nova,Tehsmash/nova,rahulunair/nova,bigswitch/nova,mikalstill/nova,rahulunair/nova,sridevikoushik31/nova,cloudbau/nova,sileht/deb-openstack-nova,tanglei528/nova,yrobla/nova,SUSE-Cloud/nova,devendermishrajio/nova,jianghuaw/nova,apporc/nova,eayunstack/nova,yrobla/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,houshengbo/nova_vmware_compute_driver,Triv90/Nova,JioCloud/nova_test_latest,TwinkleChawla/nova,alaski/nova,berrange/nova,barnsnake351/nova,Francis-Liu/animated-broccoli,cyx1231st/nova,vladikr/nova_drafts,eneabio/nova,savi-dev/nova,NeCTAR-RC/nova,JioCloud/nova,savi-dev/nova,sridevikoushik31/nova,tealover/nova,klmitch/nova,petrutlucian94/nova_dev,cloudbase/nova,leilihh/novaha,mikalstill/nova,fnordahl/nova,eonpatapon/nova,blueboxgroup/nova,mandeepdhami/nova,redhat-openstack/nova,raildo/nova,DirectXMan12/nova-hacking,adelina-t/nova,CCI-MOC/nova,jeffrey4l/nova,fajoy/nova,qwefi/nova,scripnichenko/nova,isyippee/nova,BeyondTheClouds/nova,akash1808/nova,maheshp/novatest,spring-week-topos/nova-week,maheshp/novatest,mandeepdhami/nova,CiscoSystems/nova,ted-gould/nova,superstack/nova,savi-dev/nova,zzicewind/nova,felixma/nova,saleemjaveds/https-github.com-openstack-nova,joker946/nova,iuliat/nova,OpenAcademy-OpenStack/nova-scheduler,sebrandon1/nova,devoid/nova,barnsnake351/nova,gspilio/nova,sacharya/nova,zzicewind/nova,jianghuaw/nova,eayunstack/nova,zhimin711/nova,affo/nova,termie/pupa,JioCloud/nova_test_latest,j-carpentier/nova,devendermishrajio/nova,sebrandon1/nova,vmturbo/nova,bclau/nova,eneabio/nova,devendermishrajio/nova_test_latest,MountainWei/nova,superstack/nova,usc-isi/nova,Triv90/Nova,Yusuke1987/openstack_template,projectcalico/calico-nova,josephsuh/extra-specs,cloudbase/nova-virtualbox,vladikr/nova_drafts,petrutlucian94/nova,BeyondTheClouds/nova,cernops/nova,nikesh-mahalka/nova,vmturbo/nova,yatinkumbhare/openstack-nova,mgagne/nova,sridevikoushik31/openstack,projectcalico/calico-nova,dstroppa/openstack-smartos-nova-grizzly,dstroppa/openstack-smartos-nova-grizzly,gspilio/nova,rickerc/nova_audit,fnordahl/nova,Francis-Liu/animated-broccoli,psiwczak/openstack,KarimAllah/nova,akash1808/nova_test_latest,DirectXMan12/nova-hacking,anotherjesse/nova,vmturbo/nova,Tehsmash/nova,CEG-FYP-OpenStack/scheduler,alexandrucoman/vbox-nova-driver,orbitfp7/nova,jeffrey4l/nova,maelnor/nova,ntt-sic/nova,edulramirez/nova,maoy/zknova,cernops/nova,mahak/nova,cyx1231st/nova,eonpatapon/nova,rajalokan/nova,houshengbo/nova_vmware_compute_driver,tianweizhang/nova,leilihh/nova,imsplitbit/nova,redhat-openstack/nova,double12gzh/nova,phenoxim/nova,leilihh/novaha,nikesh-mahalka/nova,usc-isi/nova,rickerc/nova_audit,shahar-stratoscale/nova,alvarolopez/nova,dims/nova,shootstar/novatest,angdraug/nova,russellb/nova,whitepages/nova,dawnpower/nova,alaski/nova,ntt-sic/nova,openstack/nova,usc-isi/extra-specs,angdraug/nova,silenceli/nova,jianghuaw/nova,Juniper/nova,noironetworks/nova,Juniper/nova,mgagne/nova,bigswitch/nova,bgxavier/nova,saleemjaveds/https-github.com-openstack-nova,usc-isi/extra-specs,CloudServer/nova,dawnpower/nova,citrix-openstack-build/nova,Juniper/nova,sebrandon1/nova,Metaswitch/calico-nova,aristanetworks/arista-ovs-nova,virtualopensystems/nova,tudorvio/nova,yrobla/nova,LoHChina/nova,imsplitbit/nova,TieWei/nova,leilihh/nova,KarimAllah/nova,usc-isi/extra-specs,hanlind/nova,shootstar/novatest,sridevikoushik31/nova,klmitch/nova,salv-orlando/MyRepo,eneabio/nova,cloudbau/nova,gooddata/openstack-nova,josephsuh/extra-specs,orbitfp7/nova,Stavitsky/nova,plumgrid/plumgrid-nova,termie/nova-migration-demo,aristanetworks/arista-ovs-nova,alvarolopez/nova,rajalokan/nova,paulmathews/nova,scripnichenko/nova,eharney/nova,paulmathews/nova,blueboxgroup/nova,badock/nova,mahak/nova,shail2810/nova,zaina/nova,joker946/nova,ewindisch/nova,spring-week-topos/nova-week,CEG-FYP-OpenStack/scheduler,BeyondTheClouds/nova,anotherjesse/nova,zaina/nova,adelina-t/nova,shail2810/nova,felixma/nova,yosshy/nova,maheshp/novatest,salv-orlando/MyRepo,thomasem/nova,NewpTone/stacklab-nova,sridevikoushik31/openstack,watonyweng/nova,watonyweng/nova,MountainWei/nova,apporc/nova,russellb/nova,tangfeixiong/nova,eharney/nova,akash1808/nova,tealover/nova,whitepages/nova,gspilio/nova,Yuriy-Leonov/nova,superstack/nova,badock/nova,jianghuaw/nova,KarimAllah/nova,dstroppa/openstack-smartos-nova-grizzly,salv-orlando/MyRepo,zhimin711/nova,bgxavier/nova,NewpTone/stacklab-nova,mmnelemane/nova,maoy/zknova,JianyuWang/nova,NoBodyCam/TftpPxeBootBareMetal,rrader/nova-docker-plugin,hanlind/nova,cloudbase/nova,cloudbase/nova-virtualbox,Yuriy-Leonov/nova,NoBodyCam/TftpPxeBootBareMetal,iuliat/nova,silenceli/nova,paulmathews/nova,anotherjesse/nova,houshengbo/nova_vmware_compute_driver,JioCloud/nova,rajalokan/nova,LoHChina/nova,dims/nova,ruslanloman/nova,ruslanloman/nova,openstack/nova,akash1808/nova_test_latest,mahak/nova,cernops/nova,DirectXMan12/nova-hacking,double12gzh/nova,Triv90/Nova,NeCTAR-RC/nova,usc-isi/nova,thomasem/nova,CCI-MOC/nova,SUSE-Cloud/nova,luogangyi/bcec-nova,NoBodyCam/TftpPxeBootBareMetal,hanlind/nova,gooddata/openstack-nova,CiscoSystems/nova,takeshineshiro/nova,JianyuWang/nova,sileht/deb-openstack-nova,termie/nova-migration-demo,Brocade-OpenSource/OpenStack-DNRM-Nova,vmturbo/nova,psiwczak/openstack,tangfeixiong/nova,OpenAcademy-OpenStack/nova-scheduler,luogangyi/bcec-nova,affo/nova,qwefi/nova,kimjaejoong/nova,NewpTone/stacklab-nova,klmitch/nova,belmiromoreira/nova,Yusuke1987/openstack_template,raildo/nova,viggates/nova,yosshy/nova,phenoxim/nova,alexandrucoman/vbox-nova-driver,bclau/nova,maoy/zknova,TwinkleChawla/nova,Juniper/nova,psiwczak/openstack,takeshineshiro/nova,mmnelemane/nova,sacharya/nova,fajoy/nova,varunarya10/nova_test_latest,CloudServer/nova,termie/nova-migration-demo,josephsuh/extra-specs,ewindisch/nova,termie/pupa,fajoy/nova,noironetworks/nova,maelnor/nova,belmiromoreira/nova,termie/pupa,rajalokan/nova,devendermishrajio/nova_test_latest,rahulunair/nova,rrader/nova-docker-plugin,sridevikoushik31/nova,gooddata/openstack-nova,edulramirez/nova,varunarya10/nova_test_latest,aristanetworks/arista-ovs-nova,mikalstill/nova,yatinkumbhare/openstack-nova,sileht/deb-openstack-nova,russellb/nova,TieWei/nova,cloudbase/nova,plumgrid/plumgrid-nova,kimjaejoong/nova