[CentOS] C7 + UEFI + GPT + RAID1

[Alessandro Baggi]

Hi there,
after installing C7, on fist boot I get this messages:

failure reading sector 0xfc from 'hd2'
failure reading sector 0xe0 from 'hd2'
failure reading sector 0x0  from 'hd2'

Press any key to continue

Entering in grub menu, and typing ls, I get info for hd0 hd1 but not hd2.
hd2 in my case is dvd-rom. Once disconnected there are no errors.

How I can solve this problem with cd-rom?

THanks in advance




Il 13/03/2016 09:23, Alessandro Baggi ha scritto:
> Hi messmer,
> seems that anaconda supports partitioned RAID devices. Disk selection
> see one mdraid device and permits to create partition on it.
>
> Il 13/03/2016 01:04, Gordon Messmer ha scritto:
>> On 03/12/2016 08:22 AM, Alessandro Baggi wrote:
>>> From several how-to concerning raid1 installation, I must put each
>>> partition on a different md devices.
>>
>> Not necessarily.  You could put LVM on top of the RAID device, and
>> create logical volumes.
>>
>>> I've asked times ago if it's more correct create the md device,
>>> partitioning it and create fs on each partition created on md device:
>>
>> Partitionable RAID devices are supported by Linux, but not by the
>> Anaconda installer.  You're better off not using them.
>>
>>> I'm installing C7 1511 on a skylake machine with UEFI and I'm confused.
>>> After googling, for my installation I must create gpt table, 1
>>> partition with fat32 type of 512M, and 2 partition for swap and /
>>> (I've excluded /home), clone gpt partition table on second disk with
>>> sgdisk, create md device for swap and /.
>>
>> Don't clone the partitions.  If you do that, then you also need to
>> randomize the UUIDs on the destination drive.  It's probably easier to
>> just create the partitions on each disk:
>>
>> parted -s /dev/sda mklabel gpt \
>>      mkpart primary ext4 1M 200M \
>>      mkpart primary ext4 200M 1224M \
>>      mkpart primary ext4 1224M 100%
>> parted -s /dev/sdb mklabel gpt \
>>      mkpart primary ext4 1M 200M \
>>      mkpart primary ext4 200M 1224M \
>>      mkpart primary ext4 1224M 100%
>>
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>