We are looking into running XFS on a 3TB FLASH MEMORY MODULE. We have a
question regarding the extent boundaries.
See the attached PowerPoint drawing, xfs.ppt We are running Linux.
Our media is 3 million contiguous 4KB blocks. We would like to define
an extent size of 1MB and this tracks the erasure block size
of the flash memory, and that greatly improves perfomance. We are trying
to understand where XFS places the extent boundaries with reference to
the contiguous block sequence.
Is this deterministic as indicated in the drawing ? That is, are the
extent boundaries on 256 block boundaries.
Any help would be greatly appreciated.
Description: MS-Powerpoint presentation