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Re: TAKE - write performance improvement

To: Ananth Ananthanarayanan <ananth@xxxxxxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
Subject: Re: TAKE - write performance improvement
From: Steve Lord <lord@xxxxxxx>
Date: Tue, 29 Aug 2000 11:44:37 -0500
In-reply-to: Message from Steve Lord <lord@sgi.com> of "Tue, 29 Aug 2000 09:14:02 CDT." <200008291414.JAA31227@jen.americas.sgi.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
> > 
> > I am backing out this change, it breaks doio, and probably anything else
> > which fills holes in files. I think we had a similar test condition in
> > this code path before, and it was removed to fix corruption. There has
> > got to be another variant of this which we can use.
> > 
> > Steve
> > 
> 
> OK, now I am puzzled, I still got corruption after I backed out the mod,
> I removed the old doio output file and the corruption went away on subsequent
> runs and I have not been able to reproduce it with or without the mod again. 
I
> will run some more tests and probably be putting the mod back in again shortl
y.
> 
> Sorry for the confusion.
> 
> Steve
> 

Looks like the corruption is once again coming out of the clustering write
code in pagebuf, I would recommend not using the kiocluster mount option
at the moment. I am doing a glibc build with Ananth's change back in again
and put it back into the tree if the build works OK.

Steve




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