On Tue, Jun 19, 2007 at 03:52:14PM -0700, Gaston, Jason D wrote: > I think that the array for nested raid levels, in metadata.c, may be > upside down. When I build a raid0+1 with Intel or Nvidia (one mirror > array of two stripe arrays), it is reported as a "raid10" with [dmraid > -s], this should be "raid01". If I reverse the nesting to raid10, in > Intel (one stripe array of two mirror arrays), it is reported as a > "raid01" with [dmraid -s], this should be "raid10". > > Can we just reverse the array in metadata.c? Nope, this is a question of the definition of RAID10 and RAID01 (or RAID0+1). I use RAID10 for a mirror on top of 2 (or more) striped sets vs. RAID01 for a stripe on top of 2 (or more) mirror sets in dmraid. Ie. looking at the device stack from the top to the bottom. So the example you made above (Intel or NVidia) with one mirror of 2 striped arrays is a RAID10 by that definition. Heinz > > From: > static const char *stacked_ascii_type[][5] = { > { "raid10", "raid30", "raid40", "raid50", "raid60" }, > { "raid01", "raid03", "raid04", "raid05", "raid06" }, > }; > > To: > static const char *stacked_ascii_type[][5] = { > { "raid01", "raid03", "raid04", "raid05", "raid06" }, > { "raid10", "raid30", "raid40", "raid50", "raid60" }, > > }; > > Thanks, > > Jason _______________________________________________ Ataraid-list mailing list Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list