On Monday, 17 March 2003 at 23:02:38 -0500, Jeff Roberson wrote: > On Mon, 17 Mar 2003, Terry Lambert wrote: > >> Jeff Roberson wrote: >>> On Mon, 17 Mar 2003, Brooks Davis wrote: >>>> I am still intrested in improvements to fsck since I'm planning to buy >>>> several systems with two 1.4TB IDE RAID5 arrays in them soon. >>> >>> For these types of systems doing a block caching layer with a prefetch >>> that understands how many spindles there are would be a huge benefit. >> >> I call that layer "Vinum" or "RAIDFrame", since that's a job I >> expect that code to do for me. 8-). > > They are not responsible for data caching. Only informing the upper > layers how many spindles they have. Software RAID should be a transform > only in my opinion. There is no reason to have duplicate block caches in > system memory.
Agreed. Vinum doesn't cache. There is one case, though, where it could be argued that it's worthwhile, namely in RAID-[45] parity blocks. Greg -- See complete headers for address and phone numbers
pgp00000.pgp
Description: PGP signature
