Public bug reported:
I tested the beta alternate Maverick (10.10) from CD and tried to create
a RAID10 array with LVM. What happens is that the RAID10 array itself is
correctly created and it shows the correct size ((N/2)*S). However when
I try to create the LVM for this array it shows a size as if it were
calculated from RAID5 size ((N-1)*S). So what the LVM shows is a *lot*
bigger than the actual usable size for RAID10.
I also tried to use this incorrect size and create the LVM. It caused a
serious lockup of the partitioner for all subsequent install attempts.
So I was forced to take the Live CD and repartition with Disk Utility
(also GParted crashed with Live CD).
I also tested RAID5. It worked correctly with correct sizes shown
((N-1)*S). Does the installer mix the RAID10 with RAID5?
** Affects: ubuntu
Importance: Undecided
Status: New
** Description changed:
- I tested the beta alternate Maverick (10.10) from CD and tried to create a
RAID10 array with LVM.
- What happens is that the RAID10 array itself is correctly created and it
shows the correct size ((N/2)*S).
- However when I try to create the LVM for this array it shows a size as if it
were calculated from RAID5 size ((N-1)*S).
- So what the LVM shows is a *lot* bigger than the actual usable size for
RAID10.
+ I tested the beta alternate Maverick (10.10) from CD and tried to create
+ a RAID10 array with LVM. What happens is that the RAID10 array itself is
+ correctly created and it shows the correct size ((N/2)*S). However when
+ I try to create the LVM for this array it shows a size as if it were
+ calculated from RAID5 size ((N-1)*S). So what the LVM shows is a *lot*
+ bigger than the actual usable size for RAID10.
I also tried to use this incorrect size and create the LVM. It caused a
serious lockup of the partitioner for all subsequent install attempts.
So I was forced to take the Live CD and repartition with Disk Utility
(also GParted crashed with Live CD).
I also tested RAID5. It worked correctly with correct sizes shown
((N-1)*S). Does the installer mix the RAID10 with RAID5?
--
RAID10 install with LVM doesn't work
https://bugs.launchpad.net/bugs/636205
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