Re: [PATCH 008 of 8] md/bitmap: Change md/bitmap file handling to use bmap to file blocks.

Paul Clements
2006-05-13T15:29:48Z

Andrew Morton wrote:

> The loss of pagecache coherency seems sad. I assume there's never a
> requirement for userspace to read this file.

Actually, there is. mdadm reads the bitmap file, so that would be
broken. Also, it's just useful for a user to be able to read the bitmap
(od -x, or similar) to figure out approximately how much more he's got
to resync to get an array in-sync. Other than reading the bitmap file, I
don't know of any way to determine that.

--
Paul