storage revision 1.2.2.1
1 1.2.2.1 snj $NetBSD: storage,v 1.2.2.1 2009/01/26 05:15:53 snj Exp $ 2 1.1 agc 3 1.1 agc NetBSD Storage Roadmap 4 1.1 agc ====================== 5 1.1 agc 6 1.1 agc This is a small roadmap document, and deals with the storage and file 7 1.1 agc systems side of the operating system. 8 1.1 agc 9 1.1 agc NetBSD 5.0 will ship with the following storage elements in place: 10 1.1 agc 11 1.1 agc 1. puffs/putter 12 1.1 agc 2. ReFUSE 13 1.1 agc 3. rump 14 1.1 agc 4. RAIDframe 15 1.1 agc 5. iSCSI target 16 1.1 agc 6. iSCSI initiator 17 1.1 agc 7. cgd 18 1.1 agc 8. fss 19 1.2.2.1 snj 9. journalling functionality for ffs 20 1.2.2.1 snj 10. read/write support for UDF file systems 21 1.1 agc 22 1.2.2.1 snj The following elements and projects are pencilled in for 6.0, but 23 1.1 agc please do not rely on them being there. 24 1.1 agc 25 1.2.2.1 snj 11. devfs 26 1.1 agc 12. logical volume management 27 1.1 agc 13. a native port of Sun's ZFS 28 1.1 agc 14. ReFUSE-lowlevel 29 1.1 agc 15. web-based management tools for storage subsystems 30 1.1 agc 16. support for flash devices - NAND and MMC/SD 31 1.1 agc 32 1.2.2.1 snj The timescales for 6.0 are not known at the present time, but we would 33 1.2.2.1 snj expect to branch 6.0 late in 2009, with a view to a 6.0 release in 34 1.2.2.1 snj early 2010. 35 1.1 agc 36 1.1 agc 37 1.1 agc Some explanations 38 1.1 agc ================= 39 1.1 agc 40 1.2.2.1 snj 11. devfs 41 1.1 agc --------- 42 1.1 agc 43 1.1 agc Devfs will allow device special files (the files used to access 44 1.1 agc devices) to be created dynamically as and when they are attached to 45 1.1 agc the system. This will greatly reduce the number of files in a /dev 46 1.1 agc directory and removes the need to run the MAKEDEV script when support 47 1.1 agc for new devices is added to the NetBSD kernel. NetBSD's devfs 48 1.1 agc implementation will also allow multiple instances of the file system 49 1.1 agc to be mounted simultaneously, which is very useful for chroot jails. 50 1.1 agc 51 1.1 agc Responsible: mjf 52 1.1 agc 53 1.2.2.1 snj 9. Journalling Functionality for FFS 54 1.1 agc ------------------------------------- 55 1.1 agc 56 1.1 agc Contributed by Wasabi Systems, Inc, technical review on tech-kern 57 1.2 simonb in March 2008, merged to HEAD in July 2008, will be in NetBSD 5.0. 58 1.1 agc 59 1.1 agc 12. Logical Volume Management 60 1.1 agc ----------------------------- 61 1.1 agc 62 1.1 agc Based on the Linux lvm2 and devmapper software, with a new kernel component 63 1.2.2.1 snj for NetBSD written. Merged in 5.99.5 sources, will be in 6.0. 64 1.1 agc 65 1.1 agc Responsible: haad, martin 66 1.1 agc 67 1.1 agc 13. Native port of Sun's ZFS 68 1.1 agc ---------------------------- 69 1.1 agc 70 1.1 agc Mostly completed by ad@, this is the FreeBSD port of Sun's ZFS, with 71 1.1 agc modifications to make it compile on NetBSD 5.0 by ad@, and based on 72 1.1 agc the original Sun code for the block layer, rather than the GEOM-based 73 1.1 agc layer. 74 1.1 agc 75 1.2.2.1 snj Responsible: ad, many others 76 1.1 agc 77 1.1 agc 14. ReFUSE-lowlevel 78 1.1 agc ------------------- 79 1.1 agc 80 1.1 agc FUSE has two interfaces, the normal high-level one, and a lower-level 81 1.1 agc interface which is closer to the way standard file systems operate. This 82 1.1 agc adds the low-level functionality in the same way that ReFUSE adds the 83 1.1 agc high-level functionality 84 1.1 agc 85 1.1 agc Responsible: pooka, agc 86 1.1 agc 87 1.1 agc 15. Web-based Management tools for Storage Subsystems 88 1.1 agc ----------------------------------------------------- 89 1.1 agc 90 1.1 agc Standard tools for managing the storage subsystems that NetBSD provides, 91 1.1 agc using a standard web-server as the basic user interface on the storage 92 1.1 agc device, allowing remote management by a standard web browser. 93 1.1 agc 94 1.1 agc Responsible: agc 95 1.1 agc 96 1.1 agc 97 1.1 agc Alistair Crooks 98 1.2.2.1 snj Sun 25 Jan 2009 20:55:12 PST 99
Indexes created Thu Oct 30 16:09:53 GMT 2025