-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 md(4) hints that you can get sequential read performance near that of the far layout with the offset layout and a large chunk size. That sounded nice and I thought that chunk size was just the number of stripes to write before the backup copy. It turns out that "chunk size" is really just the stripe factor, and so using a very large stripe factor hurts performance since even a relatively large IO doesn't span disks. Is there a way to keep a sane stripe factor, but have the offset copy stored further away to reduce seeking during sequential reads? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCgAGBQJSvOfhAAoJEI5FoCIzSKrwizkIAIfDU2MS9S1Hb4wYSZm5QZhn HSvDcnVD2jxSXwgJXLSsvq8dlO426OVnIwFECGcXS/1Lc/UcaX6t9C6cbsKGtvBG 5NQdq4WE/mBTQ4nXUzAJvyZfkacn4JhJinZjK6uEaGkoIj2cj1FP0/qjLGP3S7eT 9dMrXU61PbrS6XGHgfJzp0BXAN7YVjajCXKvwsY53BEjnuFsACs9eM8S8GBztNe8 mR9JqM9TfRhZ7C0t9/T+sbFHQqATm24Bnl7awzd7UuqXOJR8qA1GpxMHlfy07OHt 8Ya7RV28ezPmaa//RrlvPeVN8iVtvJoWndaqeXghmJYYn06CNd90gEOZZEDDi00= =WgY2 -----END PGP SIGNATURE----- -- 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
