I had experience of using FreeBSD's vinum (another software RAID). Its author, Greg Lehey, stated in vinum's manual: "... A good guideline for stripe size is between 256 kB and 512 kB. Avoid powers of 2, however: they tend to cause all superblocks to be placed on the first subdisk. ..." Meanwhile, with LSR we're given exactly 2^n choices, for e. g., neither 768 KiB, nor 387 KiB won't go: "mdadm: invalid chunk/rounding value: 387". So, why... ($Subj) and how complex would it be to abolish this restriction? I think this could be a key to performance increase. P. S. Thanks a ton for LSR, Neil, BTW. :-) -- End of message. Next message? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
