On Tue, Mar 10, 2009 at 6:04 PM, Alan Altmark <[email protected]> wrote:
> For large-scale sharing, xip2fs and DCSSes are the only way (IMO) to share > files in the way we all originally envisioned minidisk sharing. The DCSS > owner makes all the updates and then saves a new copy of the DCSS. New > users get the new one - previous users still have the old DCSS. When no > one is using the old one any more, it magically disappears. And the > DCSSes always have consistent content, even if someone loads the DCSS > while you're in the middle of building a new one. And you will find yourself in a pile of hardly shared DCSS files that gobble up storage... The atomic operation is also nicely implemented by a pool of mini disks. DDR the latest to the next unused disk, do your updates, umount and get rid of your R/W link, rotate the directory entries so new users pick up the next generation. The next server that tries to link the common R/O disk gets the new version, and eventually all links to the old disk will appear as by magic ;-) My crystal ball has a stack of sparse file systems: a large R/O disk, a DCSS, and one or more private R/W disks for the servers. Rob ---------------------------------------------------------------------- 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
