Unable to resize logical partition

[stikonas]

I was unable to resize logical partition with sfdisk (I actually first noticed this issue in KDE Partition Manager but then I checked and the error was coming from sfdisk)

# sfdisk --version
sfdisk from util-linux 2.33
# sfdisk --json /dev/sdc
{
   "partitiontable": {
      "label":"dos",
      "id":"0x545aa710",
      "device":"/dev/sdc",
      "unit":"sectors",
      "partitions": [
         {"node":"/dev/sdc1", "start":40960, "size":4194304, "type":"5"},
         {"node":"/dev/sdc5", "start":43008, "size":4192256, "type":"83"}
      ]
   }
}
# echo "start=43008 size=3192256" | sfdisk -N 5 --force /dev/sdc
Checking that no-one is using this disk right now ... OK

Disk /dev/sdc: 7,4 GiB, 7918845952 bytes, 15466496 sectors
Disk model:                 
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x545aa710

Old situation:

Device     Boot Start     End Sectors Size Id Type
/dev/sdc1       40960 4235263 4194304   2G  5 Extended
/dev/sdc5       43008 4235263 4192256   2G 83 Linux

/dev/sdc5: Failed to resize partition #5.
Leaving.

[karelzak]

Fixed. Thanks for you report!

It seems that possible workaround is to not specify start= (especially if you the not want to move it).