virtualization revision 1.4
1 $NetBSD: virtualization,v 1.4 2009/09/15 21:07:58 agc Exp $ 2 3 NetBSD Virtualization Roadmap 4 ============================= 5 6 This is a small roadmap document, and deals with the virtualization 7 side of the operating system. 8 9 1. NetBSD/usermode 10 2. virtualization jails via secmodel 11 3. iSCSI booting 12 4. iSCSI device cloning 13 5. Xen domU migration, suspend and resume 14 6. Xen balloon driver support 15 16 We currently expect to branch 6.0 in the March 2010 timeframe, with a view 17 to a 6.0 release later in 2010. 18 19 We'll continue to update this roadmap as features and dates get firmed up. 20 21 22 Some explanations 23 ================= 24 25 1. NetBSD/usermode 26 ------------------ 27 28 NetBSD/usermode is an port of NetBSD to a POSIX-compatible user-space, 29 with the intention that it should be possible to run the usermode 30 version of NetBSD on any POSIX-compatible operating system. This code 31 has been committed to the repository, but more work is needed. 32 33 Responsible: jmcneill 34 35 2. Virtualization Jails via secmodel 36 ------------------------------------ 37 38 One novel way of creating jails for virtualization is to use a new 39 secmodel (part of the kauth framework), to isolate processes into 40 jail-based virtual machines. This is the basis of a paper given by 41 bad@ at AsiaBSDcon in March 2008. 42 43 Responsible: bad 44 45 3. iSCSI booting 46 ---------------- 47 48 In order to make Xen domains migration-friendly, the storage that the 49 domain uses must be based on some form of network-centric storage, either 50 NFS, or a SAN or IP-SAN. For IP-SANs, iSCSI booting will be used. This 51 is dependent on the in-kernel iSCSI initiator project completing. 52 53 Responsible: agc 54 55 4. iSCSI device cloning 56 ----------------------- 57 58 To minimise the storage requirements for multiple domU booting, using 59 a standard root filesystem or block device for the domU is required, along 60 with some form of copy-on-write mechanism to preserve any modifications 61 that are made. 62 63 Responsible: agc 64 65 5. Xen domU migration, suspend and resume 66 ----------------------------------------- 67 68 Xen domU migration is where a domU domain is moved from one dom0 to 69 another dom0 on the same vlan (to avoid networking problems, the 70 virtual arp address migrates with the domU itself). jym is actively 71 working on this, and preliminary results are good. 72 73 Responsible: jym, bouyer 74 75 6. Xen balloon driver support 76 ----------------------------- 77 78 The balloon driver allows more memory to be added to a running Xen domU 79 instance; this allows extra memory to be used by the domU for resource 80 peak needs. cherry has made a preliminary balloon driver - some testing 81 is needed before it can be committed. 82 83 Responsible: cherry 84 85 86 Alistair Crooks 87 Tue 15 Sep 2009 08:06:34 PDT 88
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