On 11/16/2020 03:36 PM, John Pierce wrote:
the main advantage I know of for bios fake-raid is that the bios can boot off either of the two mirrored boot devices. usually if the sata0 device has failed, the BIOS isn't smart enough to boot from sata1
the only other reason is if you're running MS Windows desktop which can't do mirroring on its own
On Mon, Nov 16, 2020 at 10:23 AM Jonathan Billings billings@negate.org wrote:
On Sun, Nov 15, 2020 at 07:49:09PM -0500, H wrote:
I have been having some problems with hardware RAID 1 on the motherboard that I am running CentOS 7 on. After a BIOS upgrade of the system, I lost the RAID 1 setup and was no longer able to boot the system.
The Intel RST RAID (aka Intel Matrix RAID) is also known as a fakeraid. It isn't a hardware RAID, but instead a software RAID that has a fancy BIOS interface. I believe that the mdadm tool can examine the RAID settings, and you can look at /proc/mdstat to see its status, although from what I remember from previous posts, it's better to just let the BIOS think it's a JBOD and use the linux software RAID tools directly.
-- Jonathan Billings billings@negate.org _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Thank you. As I mentioned, I am running from one disk but and the two disks have identical disk UUIDs, identical partition UUIDs, both of which I assume is an effect of the BIOS fake RAID.
If I were to go with Linux mdadm and a RAID 1 configuration, am I correct in assuming that I would:
- decide which one is the "master" disk
- configure mdadm to sync to the other disk
Would I need to change disk UUIDs, partition UUIDs on the second disk prior to this or mdadm would synchronize as needed?
Thanks.