Ubuntu
dmraid package

  1. Bug #1361842
  2. Comment #7

Comment 7 for bug 1361842

Revision history for this message
Phillip Susi (psusi) wrote : Re: [Bug 1361842] Re: dmraid does not start on boot for single disk RAID0

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On 10/28/2014 09:55 PM, Jason Gunthorpe wrote:
> Fundamentally, if /dev/sda has a valid RAID label then it *MUST* be setup
> and accessed through the dmraid device and *NEVER* via /dev/sda.
>
> Otherwise the installer will see a disc that is too big and it will destroy
> the RAID label at the end of the disc, then the system will not boot.

For MBR partitioned disks this isn't really a problem because they never really use the last bit of the disk anyhow, but for GPT, yes... that would be a problem.

> FWIW, RHEL gets this right and sets up dmraid on this disc.

Interesting.. they must have a patch that hasn't been upstreamed.

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