linux-ext4 - Re: Test 272 fails for ext3

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Date:	Thu, 16 Aug 2012 14:07:12 +0400
From:	Dmitry Monakhov <dmonakhov@...nvz.org>
To:	Jan Kara <jack@...e.cz>, xfs@....sgi.com
Cc:	linux-ext4@...r.kernel.org
Subject: Re: Test 272 fails for ext3

On Thu, 16 Aug 2012 11:37:57 +0200, Jan Kara <jack@...e.cz> wrote:
Non-text part: multipart/mixed
>   Hello,
> 
>   I was looking into why test 272 from xfstests fails for ext3 and the
> reason is that ext3 does not support direct IO to file with enabled data
> journalling (open returns EINVAL because ->direct_IO callback is not
> specified). So I was thinking how to accomodate this fact in the test -
> the best I found was to just check using xfs_io whether O_DIRECT open
> succeeds and perform the test only in that case. Attached patch does this
> or do people have other ideas?
Looks reasonable
ACK.
> 
> 								Honza
> 
> PS: Sending again with correct list address. I'm sorry for unnecessary email.
> -- 
> Jan Kara <jack@...e.cz>
> SUSE Labs, CR
> From 529429c8497314ef956e470fdb9b94bfe797df69 Mon Sep 17 00:00:00 2001
> From: Jan Kara <jack@...e.cz>
> Date: Thu, 16 Aug 2012 11:14:35 +0200
> Subject: [PATCH] Make test 272 work for ext3
> 
> ext3 does not support direct IO for files with data journalling. This
> confuses test 272. Make the test check whether open succeeds and perform
> the writing only if it does.
> 
> Signed-off-by: Jan Kara <jack@...e.cz>
> ---
>  272 |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/272 b/272
> index 26dfa3b..e39c52b 100755
> --- a/272
> +++ b/272
> @@ -52,6 +52,12 @@ _workout()
>  		    
>  			echo "OP write_opt: $write_opt 4M, \
>  chattr_opt: $chattr_opt"
> +			if [ "$write_opt" = "oflag=direct" ]; then
> +				# Some filesystems don't support direct IO
> +				# in some cases, check for that
> +				xfs_io -F -d -f -c "" $SCRATCH_MNT/file.$idx \
> +					>> $seq.full 2>&1 || continue
> +			fi
>  			dd if=/dev/zero of=$SCRATCH_MNT/file.$idx \
>  				bs=1M count=4 $write_opt \
>  				>> $seq.full 2>&1 || exit
> -- 
> 1.7.1
> 
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