[ ... ] >> * Can Linux MD do "abbreviated" read-modify-write RAID6 >> updates like for RAID5? [ ... ] > No. (patches welcome). Ahhhm, but let me dig a bit deeper, even if it may be implied in the answer: would it be *possible*? That is, is the double parity scheme used in MS such that it is possible to "subtract" the old content of a page and "add" the new content of that page to both parity pages? [ ... ] > The ideal config for a journalled filesystem is for put the > journal on a separate smaller lower-latency device. e.g. a > small RAID1 pair. > In a previous work place I had good results with: > RAID1 pair of small disks with root, swap, journal > Large RAID5/6 array with bulk of filesystem. Sound reasonable, except that I am allergic to RAID5 (except in two cases) and RAID6 (in general). :-), but would work equally well I guess with RAID10 and its delightful MD implementation. [ ... ] Thanks for the information! _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
