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From: "Pádraig Brady" <P@draigBrady.com>
To: Jim Meyering <jim@meyering.net>
Cc: Eric Sandeen <sandeen@sandeen.net>,
	linux-ext4@vger.kernel.org, coreutils@gnu.org,
	Markus Trippelsdorf <markus@trippelsdorf.de>,
	xfs-oss <xfs@oss.sgi.com>
Subject: Re: Files full of zeros with coreutils-8.11 and xfs (FIEMAP related?)
Date: Thu, 14 Apr 2011 20:13:53 +0100	[thread overview]
Message-ID: <4DA74771.5010103@draigBrady.com> (raw)
In-Reply-To: <878vvcspz0.fsf@rho.meyering.net>

On 14/04/11 18:27, Jim Meyering wrote:
> 
> FYI, I see the same failure now using ext3 (and but not w/ext4)
> with rawhide's 2.6.39-0.rc2.git0.0.fc16.x86_64:
> 
>   + df -t ext3 .

Not with ext3 ...

>   + mkfs -t ext4 -F blob

... but with ext4 loop back

>   + perl -e 'BEGIN { $n = 1 * 1024; *F = *STDOUT }' -e 'for (1..1) { sysseek (*F, $n, 1)' -e '&& syswrite (*F, chr($_)x$n) or die "$!"}'

>   + cp --sparse=always j1 j2
>   + cmp j1 j2
>   j1 j2 differ: char 1, line 1     <<<<================

But there was no preallocation done above.
So this was the original sync issue, which doesn't seem to be working :(
Is there a chance the rawhide kernel hasn't included that change?
Unlikely as it's 2.6.39-rc2.

cheers,
Pádraig.

p.s. I will do some checking with ext3 to ensure everything is OK
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WARNING: multiple messages have this Message-ID (diff)
From: "Pádraig Brady" <P@draigBrady.com>
To: Jim Meyering <jim@meyering.net>
Cc: linux-ext4@vger.kernel.org, Eric Sandeen <sandeen@sandeen.net>,
	coreutils@gnu.org, Markus Trippelsdorf <markus@trippelsdorf.de>,
	xfs-oss <xfs@oss.sgi.com>
Subject: Re: Files full of zeros with coreutils-8.11 and xfs (FIEMAP related?)
Date: Thu, 14 Apr 2011 20:13:53 +0100	[thread overview]
Message-ID: <4DA74771.5010103@draigBrady.com> (raw)
In-Reply-To: <878vvcspz0.fsf@rho.meyering.net>

On 14/04/11 18:27, Jim Meyering wrote:
> 
> FYI, I see the same failure now using ext3 (and but not w/ext4)
> with rawhide's 2.6.39-0.rc2.git0.0.fc16.x86_64:
> 
>   + df -t ext3 .

Not with ext3 ...

>   + mkfs -t ext4 -F blob

... but with ext4 loop back

>   + perl -e 'BEGIN { $n = 1 * 1024; *F = *STDOUT }' -e 'for (1..1) { sysseek (*F, $n, 1)' -e '&& syswrite (*F, chr($_)x$n) or die "$!"}'

>   + cp --sparse=always j1 j2
>   + cmp j1 j2
>   j1 j2 differ: char 1, line 1     <<<<================

But there was no preallocation done above.
So this was the original sync issue, which doesn't seem to be working :(
Is there a chance the rawhide kernel hasn't included that change?
Unlikely as it's 2.6.39-rc2.

cheers,
Pádraig.

p.s. I will do some checking with ext3 to ensure everything is OK

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

  reply	other threads:[~2011-04-14 19:15 UTC|newest]

Thread overview: 117+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-14 10:26 Files full of zeros with coreutils-8.11 and xfs (FIEMAP related?) Markus Trippelsdorf
2011-04-14 12:06 ` Markus Trippelsdorf
2011-04-14 14:02   ` Markus Trippelsdorf
     [not found]     ` <20110414140222.GB1679-tLCgZGx+iJ+kxVt8IV0GqQ@public.gmane.org>
2011-04-14 14:59       ` Pádraig Brady
2011-04-14 14:59         ` Pádraig Brady
     [not found]         ` <4DA70BD3.1070409-V8g9lnOeT5ydJdNcDFJN0w@public.gmane.org>
2011-04-14 15:50           ` Eric Sandeen
2011-04-14 15:50             ` Eric Sandeen
     [not found]             ` <4DA717B2.3020305-+82itfer+wXR7s880joybQ@public.gmane.org>
2011-04-14 15:52               ` Pádraig Brady
2011-04-14 15:52                 ` Pádraig Brady
2011-04-14 15:56                 ` Eric Sandeen
2011-04-14 15:56                   ` Eric Sandeen
2011-04-14 16:03                   ` Markus Trippelsdorf
2011-04-14 16:03                     ` Markus Trippelsdorf
2011-04-14 16:14                     ` Eric Sandeen
2011-04-14 16:14                       ` Eric Sandeen
     [not found]                     ` <20110414160343.GA12787-tLCgZGx+iJ+kxVt8IV0GqQ@public.gmane.org>
2011-04-14 16:21                       ` Yongqiang Yang
2011-04-14 16:21                         ` Yongqiang Yang
     [not found]                         ` <BANLkTimRxvBMp9M7zwiUY_UmmFOY5N58+A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-04-14 16:28                           ` Markus Trippelsdorf
2011-04-14 16:28                             ` Markus Trippelsdorf
2011-04-14 16:31                             ` Eric Sandeen
2011-04-14 16:31                               ` Eric Sandeen
2011-04-14 16:48                               ` Markus Trippelsdorf
2011-04-14 16:48                                 ` Markus Trippelsdorf
2011-04-14 16:49                                 ` Eric Sandeen
2011-04-14 16:49                                   ` Eric Sandeen
2011-04-14 16:04                   ` Yongqiang Yang
2011-04-14 16:04                     ` Yongqiang Yang
2011-04-14 16:10                     ` Yongqiang Yang
2011-04-14 16:10                       ` Yongqiang Yang
     [not found]                       ` <BANLkTimoLeWMJgNFGW+zdeUeJyZ-_+8fMQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-05-05 11:29                         ` Pádraig Brady
2011-05-05 11:29                           ` Pádraig Brady
2011-05-05 11:47                           ` Yongqiang Yang
2011-05-05 11:47                             ` Yongqiang Yang
     [not found]                 ` <4DA7182B.8050409-V8g9lnOeT5ydJdNcDFJN0w@public.gmane.org>
2011-04-14 17:27                   ` Jim Meyering
2011-04-14 17:27                     ` Jim Meyering
2011-04-14 19:13                     ` Pádraig Brady [this message]
2011-04-14 19:13                       ` Pádraig Brady
     [not found]                     ` <878vvcspz0.fsf-CybKA8TIZ99x3y/oJEDuiw@public.gmane.org>
2011-04-14 19:39                       ` Jim Meyering
2011-04-14 19:39                         ` Jim Meyering
2011-04-14 22:59             ` Dave Chinner
2011-04-14 23:29               ` Pádraig Brady
2011-04-14 23:29                 ` Pádraig Brady
2011-04-15  0:09                 ` Dave Chinner
2011-04-15  0:09                   ` Dave Chinner
2011-04-15  5:01                   ` Andreas Dilger
2011-04-15  5:01                     ` Andreas Dilger
2011-04-16  0:50                     ` Dave Chinner
2011-04-16  0:50                       ` Dave Chinner
2011-04-16  5:11                       ` Andreas Dilger
2011-04-16  5:11                         ` Andreas Dilger
2011-04-16 12:21                         ` Theodore Tso
2011-04-16 12:21                           ` Theodore Tso
2011-04-18  0:40                           ` Dave Chinner
2011-04-18  0:40                             ` Dave Chinner
2011-04-18  2:45                             ` Andreas Dilger
2011-04-18  2:45                               ` Andreas Dilger
2011-04-19  1:58                               ` Yongqiang Yang
2011-04-19  1:58                                 ` Yongqiang Yang
     [not found]                                 ` <BANLkTin=WEpSf6ddiOMNMOpCPP-wiEttSw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-04-19  2:59                                   ` Ted Ts'o
2011-04-19  2:59                                     ` Ted Ts'o
     [not found]                                     ` <20110419025949.GA3030-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2011-04-19  3:05                                       ` Eric Sandeen
2011-04-19  3:05                                         ` Eric Sandeen
     [not found]                                         ` <4DACFBEB.9040909-+82itfer+wXR7s880joybQ@public.gmane.org>
2011-04-21 20:12                                           ` Jim Meyering
2011-04-21 20:12                                             ` Jim Meyering
2011-04-19  3:30                                     ` Yongqiang Yang
2011-04-19  3:30                                       ` Yongqiang Yang
2011-04-19  4:14                                     ` Dave Chinner
2011-04-19  4:14                                       ` Dave Chinner
2011-04-19  5:27                                     ` Christoph Hellwig
2011-04-19  5:27                                       ` Christoph Hellwig
2011-04-19  3:44                                 ` Dave Chinner
2011-04-19  3:44                                   ` Dave Chinner
2011-04-19  6:53                                   ` Yongqiang Yang
2011-04-19  6:53                                     ` Yongqiang Yang
2011-04-19  7:45                                     ` Dave Chinner
2011-04-19  7:45                                       ` Dave Chinner
2011-04-19  8:11                                       ` Yongqiang Yang
2011-04-19  8:11                                         ` Yongqiang Yang
2011-04-19 14:05                                         ` Eric Sandeen
2011-04-19 14:05                                           ` Eric Sandeen
2011-04-19 14:09                                       ` Ted Ts'o
2011-04-19 14:09                                         ` Ted Ts'o
2011-04-19 14:13                                         ` Eric Sandeen
2011-04-19 14:13                                           ` Eric Sandeen
2011-04-19 16:01                                           ` Ted Ts'o
2011-04-19 16:01                                             ` Ted Ts'o
2011-04-20  1:53                                             ` Yongqiang Yang
2011-04-20  1:53                                               ` Yongqiang Yang
2011-04-20 15:21                                             ` Christoph Hellwig
2011-04-20 15:21                                               ` Christoph Hellwig
2011-04-20 17:21                                               ` Ted Ts'o
2011-04-20 17:21                                                 ` Ted Ts'o
     [not found]                                         ` <20110419140909.GD3030-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2011-04-19 21:08                                           ` Dave Chinner
2011-04-19 21:08                                             ` Dave Chinner
2011-04-20 15:29                                             ` Christoph Hellwig
2011-04-20 15:29                                               ` Christoph Hellwig
2011-04-16  6:05                       ` Yongqiang Yang
2011-04-16  6:05                         ` Yongqiang Yang
2011-04-18  0:35                         ` Dave Chinner
2011-04-18  0:35                           ` Dave Chinner
2011-04-15  8:53                   ` Jim Meyering
2011-04-15  8:53                     ` Jim Meyering
2011-04-15 17:16                     ` Christoph Hellwig
2011-04-15 17:16                       ` Christoph Hellwig
     [not found]                       ` <20110415171629.GA9088-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2011-04-15 17:24                         ` Eric Blake
2011-04-15 17:24                           ` Eric Blake
2011-04-15 17:26                           ` Christoph Hellwig
2011-04-15 17:26                             ` Christoph Hellwig
     [not found]                             ` <20110415172603.GA20086-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2011-04-15 22:28                               ` Andreas Dilger
2011-04-15 22:28                                 ` Andreas Dilger
2011-04-16  0:25                                 ` Dave Chinner
2011-04-16  0:25                                   ` Dave Chinner
2011-04-14 14:39 ` Eric Sandeen
     [not found] ` <20110414102608.GA1678-tLCgZGx+iJ+kxVt8IV0GqQ@public.gmane.org>
2011-04-20 14:39   ` Jim Meyering
2011-04-20 14:39     ` Jim Meyering
     [not found]     ` <87d3khugv1.fsf-CybKA8TIZ99x3y/oJEDuiw@public.gmane.org>
2011-04-21 20:01       ` Jim Meyering
2011-04-21 20:01         ` Jim Meyering

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