![]() | ||||||||||
Messages in this thread |
I'm designing another file system, and I've stolen a lot of ideas from Netowrk Appliances' WAFL (write anywhere file layout), which you can see all about at http://www.netapp.com/technology/level3/3002.html. One feature they have which is rather cool, is snapshots: they can take a static copy of the file system at any time and keep it on line as a backup. Further writes are done via COW techniques; new data is written to new blocks and the old data is preserved. The only problem is that this complicates things like memory-mapped files (which NetApp's NFS server doesn't have to worry about). I'm wondering whether it's a valuable feature worth trying to implement or not. I suppose big-linux would be a better place to ask, but does anyone here have any opinions? If it were free, obviously I'd put it in, but there's significant hassle involved in some of the bookkeeping. -- -Colin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu | |||||||||
| Last update: 2005-03-22 12:41 [from the cache] ©2003-2008 | ||||||||||