Re: bio linked list corruption.

[Dave Jones]

On Fri, Oct 21, 2016 at 04:41:09PM -0400, Josef Bacik wrote:

 > >>  >
 > >>  > btrfs inspect inode 130654 mntpoint
 > >>
 > >> Interesting, they all return
 > >>
 > >> ERROR: ino paths ioctl: No such file or directory
 > >>
 > >> So these files got deleted perhaps ?
 > >>
 > > Yeah, they must have.
 > >
 > 
 > So one thing that will cause spurious csum errors is if you do things like 
 > change the memory while it is in flight during O_DIRECT.  Does trinity do that? 
 > If so then that would explain it.  If not we should probably dig into it.  Thanks,

Yeah, that's definitely possible. And it wasn't that long ago I added
some code to always open testfiles multiple times with different modes,
so the likely of O_DIRECT went up. That would explain why I've started
seeing this more.

	Dave