GNU bug report logs - #34353
GNU Parted 3.2 – A 'loop' as partition table is reported as result from an mkfs.ext4 function

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 34353 in the body.
You can then email your comments to 34353 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

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

From: Ricky Tigg <ricky.tigg <at> gmail.com>
To: bug-parted <at> gnu.org
Subject: GNU Parted 3.2 – A 'loop' as partition table is reported as result from an mkfs.ext4 function
Date: Wed, 6 Feb 2019 22:38:38 +0100

[Message part 1 (text/plain, inline)]

Hi. Initial situation:

(parted) print
Error: /dev/sdc: unrecognised disk label
Model: Kingston DataTraveler 102 (scsi)
Disk /dev/sdc: 8007MB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags:

Then on purpose I attempted to execute the following command without
creating previously to it a partition table. Its execution shouldn't have
been possible since a partition table is required before partitions can be
added to a device. Though it was executed.

# mkfs.ext4 -FL 'USB' '/dev/sdc'

As result *no partition table* is supposed to be created neither possible
to be created using above mentioned command. However as result of that
execution, *Parted* reports 'Partition Table: loop'. while expected result
would be *none.*

(parted) print
Model: Kingston DataTraveler 102 (scsi)
Disk /dev/sdc: 8007MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system  Flags
 1      0.00B  8007MB  8007MB  ext4

For comparison *Gparted* interpretation – Partition Table: none  with an
*ext4* file system created  – as illustrated in attachment. That is neither
practically possible. Regards.

[Message part 2 (text/html, inline)]

[Gparted_iPartition_table_interpretation.png (image/png, attachment)]

Message #8 received at 34353 <at> debbugs.gnu.org (full text, mbox):

From: Phillip Susi <phill <at> thesusis.net>
To: Ricky Tigg <ricky.tigg <at> gmail.com>
Cc: 34353 <at> debbugs.gnu.org
Subject: Re: bug#34353: GNU Parted 3.2 – A 'loop' as
 partition table is reported as result from an mkfs.ext4 function
Date: Tue, 23 Apr 2019 13:15:39 -0400

'loop' is an intentional pseudo disklabel that means there is no
partition table.

Ricky Tigg writes:

> Hi. Initial situation:
>
> (parted) print
> Error: /dev/sdc: unrecognised disk label
> Model: Kingston DataTraveler 102 (scsi)
> Disk /dev/sdc: 8007MB
> Sector size (logical/physical): 512B/512B
> Partition Table: unknown
> Disk Flags:
>
> Then on purpose I attempted to execute the following command without
> creating previously to it a partition table. Its execution shouldn't have
> been possible since a partition table is required before partitions can be
> added to a device. Though it was executed.
>
> # mkfs.ext4 -FL 'USB' '/dev/sdc'
>
> As result *no partition table* is supposed to be created neither possible
> to be created using above mentioned command. However as result of that
> execution, *Parted* reports 'Partition Table: loop'. while expected result
> would be *none.*
>
> (parted) print
> Model: Kingston DataTraveler 102 (scsi)
> Disk /dev/sdc: 8007MB
> Sector size (logical/physical): 512B/512B
> Partition Table: loop
> Disk Flags:
>
> Number  Start  End     Size    File system  Flags
>  1      0.00B  8007MB  8007MB  ext4
>
> For comparison *Gparted* interpretation – Partition Table: none  with an
> *ext4* file system created  – as illustrated in attachment. That is neither
> practically possible. Regards.

Message #13 received at 34353-done <at> debbugs.gnu.org (full text, mbox):

From: Phillip Susi <phill <at> thesusis.net>
To: 34353-done <at> debbugs.gnu.org
Subject: Re: bug#34353: GNU Parted 3.2 – A 'loop' as
 partition table is reported as result from an mkfs.ext4 function
Date: Tue, 23 Apr 2019 13:17:11 -0400

That was meant to be to -done.

Phillip Susi writes:

> 'loop' is an intentional pseudo disklabel that means there is no
> partition table.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.