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Virtual Distro Dispatcher - A costless distributed virtual environment from Trashware

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Flavio Bertini

Presentation at ISPA07

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Virtual Distro Dispatcher A costless distributed virtual environment from Trashware Flavio BERTINI – Davide LAMANNA – Roberto BALDONI Dipartimento di Informatica e Sistemistica “Antonio Ruberti” Università degli studi di Roma “La Sapienza”
User – Mode – Linux and Linux Terminal Server Project - Joining LTSP service with User-Mode-Linux virtualization technique
LTSP LTSP (Linux Terminal Server Project) is a Linux package which allows to connect several diskless thin clients to a Linux Terminal Server Each thin client forwards its requests to the Server. The Server satisfies their requests on each display LTSP consist in the following services: 1) DHCP Server (Dynamic Host Configuration Protocol) 2) TFTP (Basic FTP – Trivial File Transfer Protocol) 3) NFS (Network FileSystem) 4) XDMCP (Remote accesses manager)
UML UML ( User Mode Linux) “ is a safe, secure way of running Linux versions and Linux processes”. (Jeff Dike – User Mode Linux, Bruce Perence Open Source) It allows to obtain a fully working Linux Distribution like a normal one Easy to restore in case of virtual system failures because of its Filesystem logic. UML is contained into a simple file.
Research's Targets ,[object Object],[object Object],[object Object],[object Object],The User-Mode-Linux study has brought us to highlight both important security and execution modes aspects (to be continued...)
Execution modes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Main differences Address space UML Processes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
LTSP “inside” UML LTSP UML . . Host Machine How to realize VDD 1/3 Process 1 Process 2 . . Process n UML Process 1 Process 2 DHCP Server TFTP NFS XDMCP Thin Client 1 Thin Client 2 Thin Client n
UML “inside” LTSP 1/2 The Terminal Server decides services and distributions to be sent to clients (Graphical sessions are sent) Gentoo Linux Server Static Assignation Thin client 1 Thin client 2 Thin client n . . . . How to realize VDD 2/3 LTSP UML Other Services UML 1 (Debian) UML 2 (Slackware) UML n (Gentoo)
UML “inside” LTSP 2/2 Clients ask for the distribution they want to display and other needed services Gentoo Linux Server DYNAMIC Assignation Thin client 1 Thin client 2 Thin client n . . . . Request 1 Request 2 Request n How to realize VDD 3/3 LTSP UML Other Services UML 1 (Debian) UML 2 (Slackware) UML n (Fedora)
LTSP+UML purposes UML already supplies for a valid distributions testing and buggy software support The UML-LTSP system is just a diffusion or an extension of this possibility Thanks to this technique we can use UML on several thin clients in a very easy way Each thin client allows users and/or developers to use their favourite UML distribution
Who may need UML+LTSP? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Performances issue ,[object Object],[object Object],[object Object],[object Object],Compilation times are longer respect to the host VDD must be completed Despite that, VDD doesn't show any significant slow down (KDE runs quickly)
Future work ,[object Object],[object Object],[object Object],[object Object]
Future laboratory prototype
Links and Contacts The official Virtual Distro Dispatcher website: e-mail: info@vdd-project.org www: http://www.vdd-project.org Flavio BERTINI e-mail: flavio.bertini@dis.uniroma1.it D. Davide LAMANNA e-mail: davide.lamanna@dis.uniroma1.it www: http://www.dis.uniroma1.it/~lamanna Roberto BALDONI e-mail: roberto.baldoni@dis.uniroma1.it www: http://www.dis.uniroma1.it/~baldoni

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Virtual Distro Dispatcher - A costless distributed virtual environment from Trashware

  • 1. Virtual Distro Dispatcher A costless distributed virtual environment from Trashware Flavio BERTINI – Davide LAMANNA – Roberto BALDONI Dipartimento di Informatica e Sistemistica “Antonio Ruberti” Università degli studi di Roma “La Sapienza”
  • 2. User – Mode – Linux and Linux Terminal Server Project - Joining LTSP service with User-Mode-Linux virtualization technique
  • 3. LTSP LTSP (Linux Terminal Server Project) is a Linux package which allows to connect several diskless thin clients to a Linux Terminal Server Each thin client forwards its requests to the Server. The Server satisfies their requests on each display LTSP consist in the following services: 1) DHCP Server (Dynamic Host Configuration Protocol) 2) TFTP (Basic FTP – Trivial File Transfer Protocol) 3) NFS (Network FileSystem) 4) XDMCP (Remote accesses manager)
  • 4. UML UML ( User Mode Linux) “ is a safe, secure way of running Linux versions and Linux processes”. (Jeff Dike – User Mode Linux, Bruce Perence Open Source) It allows to obtain a fully working Linux Distribution like a normal one Easy to restore in case of virtual system failures because of its Filesystem logic. UML is contained into a simple file.
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  • 8. LTSP “inside” UML LTSP UML . . Host Machine How to realize VDD 1/3 Process 1 Process 2 . . Process n UML Process 1 Process 2 DHCP Server TFTP NFS XDMCP Thin Client 1 Thin Client 2 Thin Client n
  • 9. UML “inside” LTSP 1/2 The Terminal Server decides services and distributions to be sent to clients (Graphical sessions are sent) Gentoo Linux Server Static Assignation Thin client 1 Thin client 2 Thin client n . . . . How to realize VDD 2/3 LTSP UML Other Services UML 1 (Debian) UML 2 (Slackware) UML n (Gentoo)
  • 10. UML “inside” LTSP 2/2 Clients ask for the distribution they want to display and other needed services Gentoo Linux Server DYNAMIC Assignation Thin client 1 Thin client 2 Thin client n . . . . Request 1 Request 2 Request n How to realize VDD 3/3 LTSP UML Other Services UML 1 (Debian) UML 2 (Slackware) UML n (Fedora)
  • 11. LTSP+UML purposes UML already supplies for a valid distributions testing and buggy software support The UML-LTSP system is just a diffusion or an extension of this possibility Thanks to this technique we can use UML on several thin clients in a very easy way Each thin client allows users and/or developers to use their favourite UML distribution
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  • 16. Links and Contacts The official Virtual Distro Dispatcher website: e-mail: info@vdd-project.org www: http://www.vdd-project.org Flavio BERTINI e-mail: flavio.bertini@dis.uniroma1.it D. Davide LAMANNA e-mail: davide.lamanna@dis.uniroma1.it www: http://www.dis.uniroma1.it/~lamanna Roberto BALDONI e-mail: roberto.baldoni@dis.uniroma1.it www: http://www.dis.uniroma1.it/~baldoni