>>>>> "Christian" == Christian Guggenberger
>>>>> <Christian.Guggenberger@xxxxxxxxxxxxxxxxxxxxxxxx> writes:
Christian> I'm going to set up a new 1.7 TB HW Raid 5 next week. RAID
Christian> 5 contains 11 disks, Stripe Unit should be (according to
Christian> the manual) 128k. so my mkfs.xfs options will be
Christian> sunit=256, swidth=2560 for the data section, won't they?
Christian> I will definitly use internal log, so I'd like to ask, if I
Christian> should use logversion 2, and what sunit and swidth values I
Christian> should use here? I guess the same as for the data
128KB log alignment seems a bit of an overkill.
Does your controller state which chunk size it uses internally? Most
controllers use 4-16KB blocks for RAID5. So try aligning your log to
values in that neighbourhood.
There's no swidth for the log, btw.
Martin K. Petersen http://mkp.net/