** Bug watch added: GNOME Bug Tracker #678379
   https://bugzilla.gnome.org/show_bug.cgi?id=678379

** Also affects: gparted via
   https://bugzilla.gnome.org/show_bug.cgi?id=678379
   Importance: Unknown
       Status: Unknown

** Changed in: gparted (Ubuntu)
   Importance: Undecided => Medium

** Changed in: gparted (Ubuntu)
       Status: Invalid => Triaged

** Summary changed:

- gparted raid wrong information
+ gparted identifying incorrect raid arrays

** Description changed:

- Hi,
- 
- I have noticed that information about raid (in my case raid0 arrays) are
- completely wrong.
- 
- Partition name is wrong - !!!  it is always adding 'p1' at the end of the 
device name (partition). 
- Label is wrong - is not detected at all.
- flags is empty
- Managed flags is empty.
- used and unused is empty.
- 
- The thing is that I am normally running on that OS instance without any
- problem. Fsck saying it is clean.
- 
- lsb_release -rd
- Description:  Ubuntu 12.10
- Release:      12.10
- 
- apt-cache policy gparted
- gparted:
-   Installed: 0.14.0-1~getdeb1
-   Candidate: 0.14.0-1~getdeb1
-   Version table:
-  *** 0.14.0-1~getdeb1 0
-         500 http://archive.getdeb.net/ubuntu/ quantal-getdeb/apps amd64 
Packages
-         100 /var/lib/dpkg/status
-      0.12.1-1 0
-         500 http://archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
- 
- apt-cache policy libparted0debian1
- libparted0debian1:
-   Installed: 2.3-10ubuntu2
-   Candidate: 2.3-10ubuntu2
-   Version table:
-  *** 2.3-10ubuntu2 0
-         500 http://archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
-         100 /var/lib/dpkg/status
- 
- This errors have apperead in the previous versions of gparted as well
- BUT not all of them. From the version 14 release it is all information
- wrong and it is not even possible to change them. It is only valid for
- raid0 arrays. I am not aware of if those errors appeared on other raid
- level configurations.
- 
- Let me know if you need more information.
- 
- 
- Regards,
- M.
+ On startup, gparted complains with several popups that it has an
+ internal parted bug trying to stat /dev/md/XXXX.  This appears to be
+ caused by its reliance on running mdadm --examine --scan to identify
+ raid arrays.  Recent versions of mdadm now report the existence of
+ "containers" that are not usable block devices, but gparted thinks they
+ are.  It also reports the preferred major number rather than the actual.
+ In other words, if the metadata says it is supposed to be /dev/md0, that
+ is what mdadm reports, however it may have been activated as /dev/md127
+ instead, causing gparted to try to use a device that does not exist.

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https://bugs.launchpad.net/bugs/1074606

Title:
  gparted identifying incorrect raid arrays

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