Re: WARNING in xfs_lwr.c, xfs_write()

From: Dave Chinner
Date: Sun May 23 2010 - 06:19:24 EST

On Sun, May 23, 2010 at 12:20:23AM -0500, Roman Kononov wrote:
> Under some workload, once per ~10 seconds, I'm getting the following warnings
> with and (x86_64). Why are they?

You've got some workload that is mixing direct IO writes with some
form of buffered or mmap IO on the same file and they are racing.
Mixing different types of IO on the one inode is also known as A
Really Bad Idea because there is no guarantee of coherency between

Can you find out what the application is triggering this?


Dave Chinner
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