Hi Phillip,
Good news! This problem does not exist with Ubuntu 15.10.
I booted my computer using the ubuntu-15.10-desktop-i386.iso image,
and then successfully grew a 20 GiB ext4 partition to 40 GiB on my
Intel Software RAID (Fake RAID).
Following are the details of the successful test.
*** Boot ubuntu 15.10 i386 from Live CD (before running GParted)
ubuntu@ubuntu:~$ ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Nov 11 21:40 control
brw-rw---- 1 root disk 252, 1 Nov 11 21:39 isw_efjbbijhh_Vol0
lrwxrwxrwx 1 root root 7 Nov 11 21:40 isw_efjbbijhh_Vol0p1 -> ../dm-0
ubuntu@ubuntu:~$ ls -l /dev/dm*
brw-rw---- 1 root disk 252, 0 Nov 11 21:40 /dev/dm-0
brw-rw---- 1 root disk 252, 1 Nov 11 21:40 /dev/dm-1
ubuntu@ubuntu:~$
*** Use GParted to queue and apply operation to grow ext4 partition
from 20 GiB to 40 GiB
ubuntu@ubuntu:~$ sudo gparted
======================
libparted : 3.2
======================
ubuntu@ubuntu:~$
*** SUCCESS!
*** Device entries after successful resize.
ubuntu@ubuntu:~$ ls -l /dev/mapper
total 0
crw------- 1 root root 10, 236 Nov 11 21:40 control
brw-rw---- 1 root disk 252, 1 Nov 11 21:46 isw_efjbbijhh_Vol0
lrwxrwxrwx 1 root root 7 Nov 11 21:47 isw_efjbbijhh_Vol0p1 -> ../dm-0
ubuntu@ubuntu:~$ ls -l /dev/dm*
brw-rw---- 1 root disk 252, 0 Nov 11 21:47 /dev/dm-0
brw-rw---- 1 root disk 252, 1 Nov 11 21:40 /dev/dm-1
ubuntu@ubuntu:~$
Based on this test I suggest this problem be closed as resolved with
ubuntu 15.10. :-)
Curtis
** Attachment added: "gparted_details-ubuntu1510-dm-grow.htm"
https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/1332139/+attachment/4517232/+files/gparted_details-ubuntu1510-dm-grow.htm
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https://bugs.launchpad.net/bugs/1332139
Title:
Resizing dmraid partition removes device path entry
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