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Subject: bug#21151: Strange behaviour when using interactive vs non-interactive mode - is this a bug?
Resent-From: Adam Baxter <voltagex@HIDDEN>
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Date: Tue, 28 Jul 2015 08:20:59 -0700
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From: Adam Baxter <voltagex@HIDDEN>
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Hi all,
With the following script and parted 3.2

#!/bin/bash
image=blank.img
dd if=/dev/zero of=$image bs=1M count=32
sync
cat <<-EOF | parted -s $image
        mklabel msdos
        mkpart primary ext2 0 100%
        set 1 boot on
EOF
sync
file $image

I see different results if parted is invoked with -s or without.

*With* -s, the call to file results in "blank.img: data" and there's no
partitions in the disk image.
*Without* -s,

Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)         mklabel msdos
(parted)         mkpart primary ext2 0 100%
Warning: The resulting partition is not properly aligned for best
performance.
(parted)         set 1 boot on
(parted) quit
blank.img: DOS/MBR boot sector; partition 1 : ID=0x83, active, start-CHS
(0x0,0,2), end-CHS (0x1ff,3,32), startsector 1, 65535 sectors

Removing the quit command makes no difference.

The script without -s will crash at least parted 2.3.

Thanks,
Adam Baxter

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<div dir=3D"ltr"><div><div><div><div><div>Hi all,<br></div>With the followi=
ng script and parted 3.2<br><br>#!/bin/bash<br>image=3Dblank.img<br>dd if=
=3D/dev/zero of=3D$image bs=3D1M count=3D32<br>sync<br>cat &lt;&lt;-EOF | p=
arted -s $image<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 mklabel msdos=
<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 mkpart primary ext2 0 100%<b=
r>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 set 1 boot on<br>EOF<br>sync<b=
r>file $image<br><br></div>I see different results if parted is invoked wit=
h -s or without.<br><br>*With* -s, the call to file results in &quot;blank.=
img: data&quot; and there&#39;s no partitions in the disk image.<br></div><=
/div>*Without* -s, <br><br>Welcome to GNU Parted! Type &#39;help&#39; to vi=
ew a list of commands.<br>(parted)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 mklabel msdos<br>(parted)=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 mkpart primary ext2 0 100%<br>Warning: The resulting partition is=
 not properly aligned for best performance.<br>(parted)=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 set 1 boot on<br>(parted) quit<br>blank.img:=
 DOS/MBR boot sector; partition 1 : ID=3D0x83, active, start-CHS (0x0,0,2),=
 end-CHS (0x1ff,3,32), startsector 1, 65535 sectors<br><br></div><div>Remov=
ing the quit command makes no difference.<br><br></div><div>The script with=
out -s will crash at least parted 2.3.<br><br><br></div><div>Thanks,<br></d=
iv><div>Adam Baxter<br></div></div>

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Adam Baxter <voltagex@HIDDEN>
Subject: bug#21151: Acknowledgement (Strange behaviour when using
 interactive vs non-interactive mode - is this a bug?)
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Date: Tue, 28 Jul 2015 15:22:02 +0000

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Message sent to bug-parted@HIDDEN:

Subject: bug#21151: Strange behaviour when using interactive vs non-interactive mode - is this a bug?
Resent-From: "Brian C. Lane" <bcl@HIDDEN>
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Date: Tue, 28 Jul 2015 15:40:32 -0700
From: "Brian C. Lane" <bcl@HIDDEN>
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On Tue, Jul 28, 2015 at 08:20:59AM -0700, Adam Baxter wrote:
> Hi all,
> With the following script and parted 3.2
> 
> #!/bin/bash
> image=blank.img
> dd if=/dev/zero of=$image bs=1M count=32
> sync
> cat <<-EOF | parted -s $image
>         mklabel msdos
>         mkpart primary ext2 0 100%
>         set 1 boot on
> EOF
> sync
> file $image
> 
> I see different results if parted is invoked with -s or without.
> 
> *With* -s, the call to file results in "blank.img: data" and there's no
> partitions in the disk image.
> *Without* -s,

Don't put the commands on separate lines when using -s:

parted -s $image mklabel msdos mkpart primary ext2 0 100% set 1 boot on

> 
> Welcome to GNU Parted! Type 'help' to view a list of commands.
> (parted)         mklabel msdos
> (parted)         mkpart primary ext2 0 100%
> Warning: The resulting partition is not properly aligned for best
> performance.
> (parted)         set 1 boot on
> (parted) quit
> blank.img: DOS/MBR boot sector; partition 1 : ID=0x83, active, start-CHS
> (0x0,0,2), end-CHS (0x1ff,3,32), startsector 1, 65535 sectors
> 
> Removing the quit command makes no difference.
> 
> The script without -s will crash at least parted 2.3.

That's likely fixed in newer versions.

-- 
Brian C. Lane | Anaconda Team | IRC: bcl #anaconda | Port Orchard, WA (PST8PDT)

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