Public bug reported:
Binary package hint: gnome-disk-utility
1. Version of Ubuntu:
Description: Ubuntu 10.04 LTS
Release: 10.04
2. Version of package:
Installed: 2.30.1-1
Candidate: 2.30.1-1
Version table:
*** 2.30.1-1 0
500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages
100 /var/lib/dpkg/status
3. What do I expect to happen:
a. Create new RAID-1 array with 2 components using the gnome-disk-utility GUI.
Have the array build and report the array status as "Running".
b. Add a new component to the array using the Edit Components GUI and the
"Expand Array" option. Have the array report "degraded" and sync the new
component. After rebuilding the array, gnome-disk-utility reports the total
number of components in the array as "3" and the status of the array as
"Running".
c. Remove a component from the array using the Edit Components GUI. The
selected component is removed from the array. gnome-disk-utility reports total
number of components in the array as "2" and reports the array status as
"Running".
4. What happened instead:
a. Created new RAID-1 array with 2 components using the gnome-disk-utility GUI.
Had the array build and report as "Running".
b. Added a new component to the array using the Edit Components GUI and the
"Expand Array" option. Had the array report "degraded" and sync the new
component. After the array rebuilt, gnome-disk-utility reported the total
number of components in the array as "3" and the status of the array as
"Running". Everything is as expected so far.
c. Removed a component from the array using the Edit Components GUI. The
selected component is removed from the array. gnome-disk-utility continues to
report the total number of components in the array as "3" and reports the array
status as "degraded".
d. Attempts to stop and restart the array using the GUI did not resolve the
problem. The array continued to report its status as "degraded" and the number
of components as "3" even though there were only two components. While in this
state, any component added as a "spare" using the GUI was immediately brought
into service and the array rebuilds with 3 components.
Note: If, in step b., I select "Add Spare", select the new component,
then remove one of the old components, gnome-disk-utility reports the
array as degraded, rebuilds into the spare, and when done, reports the
status as "running" and the number of components in the array as "2".
This is desired behavior, but does not address my problem.
I wish to always maintain at least two healthy disks in my array. If I
need to replace a disk with a new one, I can, as mentioned in the note
above, mark the new disk as a spare and remove the old disk from the
array. While this will eventually rebuild the array, it leaves the array
in a degraded state until the new disk is fully synced, leaving data at
risk. Rather, I wish to be able to add a new disk to the existing array
of two disks, have it sync up, then remove one of the old disks, leaving
one old and one new disk in the array. In this situation, there are
always at least two disks in the array at all times. Unfortunately, this
does not result in the desired result, as gnome-disk-utility thinks that
I want to permanently change the number of disks in the array from 2 to
3. There is no way to tell gnome-disk-utility that I wish to decrease
the number of disks in the array from 3 to 2.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gnome-disk-utility 2.30.1-1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Fri May 7 00:45:27 2010
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: gnome-disk-utility
** Affects: gnome-disk-utility (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 lucid
--
Cannot reduce number of components in RAID array
https://bugs.launchpad.net/bugs/576866
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