Setting up my 2nd set of Raid drives - HPE Gen10 Plus

[Robert Moskowitz]

On 6/23/25 11:48 PM, Robert Moskowitz via ubuntu-users wrote:
> With google's AI I have come up with the following:
>
> sgdisk -Z /dev/md2
> sgdisk -n 1:0:0 -t 1:8300 -c 1:"RAID_Storage2" /dev/md2

I needed a reboot here...

> mkfs.ext4 /dev/md2p1
> mkdir /Storage2
> mount /dev/md2p1 /Storage2
> blkid /dev/md2p1
> UUID=<your_raid_uuid> /Storage2 ext4 defaults 0 2

/Storage2 is available

Good enough.

crontab shutdown at 4:10am worked last night.

Next since the system will only be on from ~1am - 4am, I need to change 
the time for auto apt updating.  Found info on that.



>
> I LOOKS right, but some extra eyes, please,,,,
>
> Thanks
>
> On 6/23/25 7:28 PM, Robert Moskowitz via ubuntu-users wrote:
>> This is for my HPE Gen10 Plus.
>>
>> In the Ubuntu 24 install, I put the boot drive on the Internal USB 
>> stick, as you will see below.
>>
>> I set up two Raid groups, messed up and restarted Install.  Only this 
>> time just creating one Raid group (md0) and setting it up as one big 
>> ext4 partition.
>>
>> Now I want to setup the remaining 2 drives as an ext4 partition as 
>> directory /storage2
>>
>> The only guide I have so far is:
>>
>> https://askubuntu.com/questions/1299978/install-ubuntu-20-04-desktop-with-raid-1-and-lvm-on-machine-with-uefi-bios 
>>
>>
>> df -h shows:
>>
>> Filesystem      Size  Used Avail Use% Mounted on
>> tmpfs           780M  1.3M  778M   1% /run
>> efivarfs        494K  125K  365K  26% /sys/firmware/efi/efivars
>> /dev/md0        3.6T  393G  3.1T  12% /
>> tmpfs           3.9G     0  3.9G   0% /dev/shm
>> tmpfs           5.0M     0  5.0M   0% /run/lock
>> /dev/sdf1       688M  6.2M  682M   1% /boot/efi
>> tmpfs           780M   12K  780M   1% /run/user/1000
>>
>> So definitely md0.  But I run cat /proc/mdstat:
>>
>> Personalities : [raid1] [raid0] [raid6] [raid5] [raid4] [raid10]
>> md2 : active raid1 sdc[1] sda[0]
>>       3906886464 blocks super 1.2 [2/2] [UU]
>>       bitmap: 0/30 pages [0KB], 65536KB chunk
>>
>> md0 : active raid1 sdb[0] sdd[1]
>>       3906886464 blocks super 1.2 [2/2] [UU]
>>       bitmap: 0/30 pages [0KB], 65536KB chunk
>>
>> And somehow, my aborted effort to make that 2nd Raid group stayed in 
>> the install.  Or so it seems.
>>
>> But to further confuse me:
>>
>> # lsblk
>> NAME          MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINTS
>> sda             8:0    0  3.6T  0 disk
>> └─md2           9:2    0  3.6T  0 raid1
>>   └─vg0-lv--0 252:0    0  3.6T  0 lvm
>> sdb             8:16   0  3.6T  0 disk
>> └─md0           9:0    0  3.6T  0 raid1 /
>> sdc             8:32   0  3.6T  0 disk
>> └─md2           9:2    0  3.6T  0 raid1
>>   └─vg0-lv--0 252:0    0  3.6T  0 lvm
>> sdd             8:48   0  3.6T  0 disk
>> └─md0           9:0    0  3.6T  0 raid1 /
>> sde             8:64   0  2.7T  0 disk
>> └─sde1          8:65   0  2.7T  0 part
>> sdf             8:80   1 14.5G  0 disk
>> └─sdf1          8:81   1  689M  0 part  /boot/efi
>>
>> I did choose lvm in that aborted install for the 2nd Raid group, and 
>> it seems like that is still there?
>>
>> I don't think I need lvm, I am open to why I might.  But can someone 
>> point me to a guide that will get md2 usable as /storage2?
>>
>> My googling for such a guide has come up empty...
>>
>> Thanks!
>>
>> Oh, and I will need to figure out which physical drives are which sd_ 
>> so if I need to, I will know which to fix.
>>
>> And I have rsyncd up on this box ready to start receiving backups. 
>> But no poweron hardware timer, it seems, in the Gen10+, so I will 
>> need a powerstrip with a timer to turn it on at 1am and a cron job to 
>> shutdown at 4am...
>>
>>
>>
>>
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