GNU bug report logs - #79171
-s is ignored when using resizepart for shrinking a partition

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Casey Fitzpatrick <kcghost <at> gmail.com>
To: bug-parted <at> gnu.org
Subject: -s is ignored when using resizepart for shrinking a partition
Date: Mon, 4 Aug 2025 16:19:02 -0400

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When using resizepart with "-s" a warning prompt is still printed when
shrinking a partition. Then the command fails without actually prompting
for Yes/No.

Seen using parted version 3.6:
```
$ sudo parted -s /dev/loop0 unit B resizepart 1 420478975
Warning: Shrinking a partition can cause data loss, are you sure you want
to continue?
$ echo $?
1
```

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Message #8 received at 79171 <at> debbugs.gnu.org (full text, mbox):

From: "Brian C. Lane" <bcl <at> redhat.com>
To: Casey Fitzpatrick <kcghost <at> gmail.com>
Cc: 79171 <at> debbugs.gnu.org
Subject: Re: bug#79171: -s is ignored when using resizepart for shrinking a
 partition
Date: Mon, 4 Aug 2025 14:57:49 -0700

On Mon, Aug 04, 2025 at 04:19:02PM -0400, Casey Fitzpatrick wrote:
> When using resizepart with "-s" a warning prompt is still printed when
> shrinking a partition. Then the command fails without actually prompting
> for Yes/No.
> 
> Seen using parted version 3.6:
> ```
> $ sudo parted -s /dev/loop0 unit B resizepart 1 420478975
> Warning: Shrinking a partition can cause data loss, are you sure you want
> to continue?
> $ echo $?
> 1
> ```

parted defaults to not doing things that could lose data, so shrinking
is only supported in interactive mode. This comes up from time to time.
eg.

https://lists.gnu.org/archive/html/bug-parted/2024-06/msg00000.html

Brian

-- 
Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart

Message #11 received at 79171 <at> debbugs.gnu.org (full text, mbox):

From: Casey Fitzpatrick <kcghost <at> gmail.com>
To: "Brian C. Lane" <bcl <at> redhat.com>
Cc: 79171 <at> debbugs.gnu.org
Subject: Re: bug#79171: -s is ignored when using resizepart for shrinking a
 partition
Date: Mon, 4 Aug 2025 18:53:13 -0400

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Thanks! I missed that somehow searching around. I'm glad there is a
workaround at least.

On Mon, Aug 4, 2025, 5:57 PM Brian C. Lane <bcl <at> redhat.com> wrote:

> On Mon, Aug 04, 2025 at 04:19:02PM -0400, Casey Fitzpatrick wrote:
> > When using resizepart with "-s" a warning prompt is still printed when
> > shrinking a partition. Then the command fails without actually prompting
> > for Yes/No.
> >
> > Seen using parted version 3.6:
> > ```
> > $ sudo parted -s /dev/loop0 unit B resizepart 1 420478975
> > Warning: Shrinking a partition can cause data loss, are you sure you want
> > to continue?
> > $ echo $?
> > 1
> > ```
>
> parted defaults to not doing things that could lose data, so shrinking
> is only supported in interactive mode. This comes up from time to time.
> eg.
>
> https://lists.gnu.org/archive/html/bug-parted/2024-06/msg00000.html
>
> Brian
>
> --
> Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart
>
>

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