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Re: [dm-devel] buffer/cache: Underlying device vs. mapper device



On Fri, Dec 17, 2004 at 10:17:15PM +0100, Arno Wagner wrote:
> The data read from /dev/hdX does not reflect the write to /dev/mapper/xx 
> or only after a lot of data ( > main memory) has been written. Waiting
> does not help. (After 1 hour still no change.)
 
I've seen similar issues in 2.6 for a long time with loop devices 
I use for testing needing to be flushed explicitly.
(blockdev --flushbufs)

I've not managed to find time to investigate yet.

Alasdair
-- 
agk redhat com


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