bug#26464: Can not use mklabel filesystem specification feature

On 4/12/2017 6:43 AM, [email protected] wrote:
> I'm trying to use the possibility of mkpart to specify the file system type, with the non interactive interface (--script)
> 
> First point is pure documentary : 
> https://www.gnu.org/software/parted/manual/parted.html#mkpart indicates :
> mkpart [part-type fs-type name] start end
> 
> man mkpart indicates:
> mkpart [part-type name fs-type] start end
> 
> name and fstype have been switched between the two docs.
> All versions 3.2 !??
> Anyways, it seems that using the name always fail

The docs have been fixed for about a year now and will appear in the
next release.  The msdos partition table does not support names.

> Second point :
> I expect this line 
> #parted --script /dev/sda unit s  mkpart primary ext4   2048    208896
> 
> to create a partition with a file system set as ext4.
> 
> I don't expect it to be initialized, but just to have the display like :
> Number  Start  End      Size     Type     File system  Flags
>  1      2048s  208896s  206849s  primary  ext4         lba
> 
> Instead I get this :
> Number  Start   End    Size   Type     File system  Flags
>  1      1049kB  107MB  106MB  primary

That is because the partition in fact, contains no filesystem.  Parted
used to re-read the disk after every command, but in the next release,
will no longer do this and so will preserve the "ext4" filesystem
setting until you restart parted.

> Now using the commdand console interface everything is ok :
> # parted /dev/sda
> GNU Parted 3.2
> Using /dev/sda
> Welcome to GNU Parted! Type 'help' to view a list of commands.
> (parted) unit s  mkpart primary ext4   2048    208896                     
> (parted) p                                                                
> Model: ATA ST32000641AS (scsi)
> Disk /dev/sda: 3907029168s
> Sector size (logical/physical): 512B/512B
> Partition Table: msdos
> Disk Flags: 
> 
> Number  Start  End      Size     Type     File system  Flags
>  1      2048s  208896s  206849s  primary  ext4         lba
> 
> 
> This should be part of an automated workflow.
> 
> I've also tested things like
> echo "unit s  mkpart primary ext4   2048    208896 q" | parted --script /dev/sda
> and
> parted --script /dev/sda <<< "unit s  mkpart primary ext4   2048    208896 q"
> without success.
> 
> It also fails without --script.
> 
> What am I missing ?

parted --script /dev/sda unit s mkpart primary ext4 2048 208896 q