On Oct 4, 2005, at 2:30 AM, Waite, Dick wrote:
An interesting item from NTTwww.nilfs.org NILFS is a log-structured file system developed for the Linux kernel 2.6. NILFS is an abbreviation of the New Implementation of a Log-structured File System. A log-structured file system has the characteristic that all file system data including metadata is written in a log-like format. Data is never overwritten, only appended in this file system. This greatly improves performance because there is little overhead regarding disk seeks.
Um, doesn't that chew up your DASD really fast if it never overwrites anything? Also, I suspect that the smartness in seeking is largely lost on s390/ zSeries hardware anyway, since the disk geometry is so far from what Linux ever actually sees. All the intermediate controllers and abstraction layers will work to defeat it. The free point-in-time snapshots are pretty cool though. Adam ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
