Hello once again, I should not use FS with less then 4k fragment, but for 2.7Tb disk - what should be an advice for raidframe blocks, for fs blocks?
Usually I use 128 1 1 1 in raidctl (knowing nothing else :) and newfs -b 64k. On Sat, Jul 26, 2014 at 10:14:53AM +0100, Patrick Welche wrote: > On Sat, Jul 26, 2014 at 01:05:05PM +0400, Dima Veselov wrote: > > Sorry, I have lost your last message, but wish to know something about > > 4k-alignment. What should be aligned to what? > > I suspect it is something like: > > # gpt show wd0 > start size index contents > 0 1 PMBR > 1 1 Pri GPT header > 2 32 Pri GPT table > 34 30 > 64 14680192 1 GPT part - NetBSD RAIDFrame component > 14680256 33554432 2 GPT part - NetBSD swap > > Note how I didn't start index 1 at the default 34 (512 byte blocks > = offset of 17408 bytes which is not divisible by 4k = 4096 bytes), > but used gpt add "-b" to start at 64 (i.e., offset of 32768 bytes which > is divisible by 4096). > > (and > 14680256*512/4096 > 1835032.00000000000000000000 > ) > > Cheers, > > Patrick -- Sincerelly yours
