Take the following example vinum config file: drive a device /dev/da2a drive b device /dev/da3a
volume rambo plex org concat sd length 512m drive a plex org concat sd length 512m drive b The keyword "concat" specifies the relationship between the plexes and the subdisks. All writes, are always written to all plexes of a given volume, thus the example above is a mirror with two plexes, each being comprised of one very small subdisk. I understand this. What I don't understand, is how to implement a RAID-5 volume. The only two vinum plex organizations listed in the handbook were "striped" and "concat". How do I implement striping with distributed parity (RAID 5)? This was not covered (or I missed it) in the handbook, or the vinum(4) manual page, or the gvinum(8) manual page, or in "The Complete FreeBSD". There is a lot of great material on how vinum is implemented and how great it will make your life, but painfully little on the actual configuration syntax. In the vinum(4) man page, it describes a number of mappings between subdisks and plexes including: "Concatenated", "Striped" and "RAID-5", however these are section headings and in the example config files, the keywords were "striped" and "concat", not "Striped" and "Concatenated" were used. There has to be at least one other subdisk to plex mapping: "Vinum implements the RAID-0, RAID-1 and RAID-5 models, both individually and in combination." RAID-5 is mentioned several times, but no examples were ever given. What is the plex organization keyword, "raid5", "raid-5", "RAID-5", "5", "parity", "disparity"? I could use trial and error, but there has to be a document with this information somewhere. Other than rummaging through source code, is there any additional documentation on vinum configuration syntax, (A strict specification would be great!)? I found a FreeBSD Diary article using vinum, but it wasn't for RAID-5, so no luck there. FreeBSD 6.1-RELEASE -Modulok- _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"