Anyone have a good explanation for the use of bitmaps?
Anyone on the list use them?
http://gentoo-wiki.com/HOWTO_Gentoo_Install_on_Software_RAID#Data_Scrubbing
Provides an explanation on that page.
I believe Neil stated that using bitmaps does incur a 10% performance
penalty. If one's box never (or rarely) crashes, is a bitmap needed?
The one question I had regarding a bitmap is as follows:
The mismatch_cnt file.
If I have bitmaps turned on for my RAID DEVICES, is it possible that the
'mismatch_cnt' will be updated when it finds a bad block?
That would be VERY nice instead of running a check all the time.
Justin.
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