Changing My RAID Array, Removing And Partitioning Block Device

I'm attempting to shape my RAID to an all 2TB 3-block device array. My
current array is as follows:

/dev/sda1    3TB    active    clean     ==>>
/dev/sda1          796GB

/dev/sda2              2TB
/dev/sdc1    2TB    active    clean
/dev/sdd1    2TB    active    clean
/dev/sde    1TB    active    clean     ==>>   --fail
then --remove

My goal is to end up with a 4TB RAID array with 3 devices. Then use the
"free" partitions /dev/sde and /dev/sda1 to create another RAID array later.

$mdadm /dev/md127 --fail /dev/sda1             ##to set the block device
as fail

$mdadm /dev/md127 --remove /dev/sda1            ##to remove the block
device from the array

$mdadm --detail /dev/md127              ##to check the array status,
note the status of each of the component devices

You should see that one block device is removed now. I can start
partitioning /dev/sda1 with fdisk.

$fdisk /dev/sda                  ##to load the device

If you have not used fdisk before, it is command line only but
everything is easy to get.

$ sudo fdisk /dev/sda                        ##to load the device, give
your root password
[sudo] password for donato:

Welcome to fdisk (util-linux 2.31).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

Command (m for help): m <return>
Help:

Generic
   d   delete a partition
   F   list free unpartitioned space
   l   list known partition types
   n   add a new partition
   p   print the partition table
   t   change a partition type
   v   verify the partition table
   i   print information about a partition

Misc
   m   print this menu
   x   extra functionality (experts only)

Script
   I   load disk layout from sfdisk script file
   O   dump disk layout to sfdisk script file

Save & Exit
   w   write table to disk and exit
   q   quit without saving changes

Create a new label
   g   create a new empty GPT partition table
   G   create a new empty SGI (IRIX) partition table
   o   create a new empty DOS partition table
   s   create a new empty Sun partition table

Create a new empty GPT partition table. This will set up deletion of
all partitions and data on the device. Only when you type w is
everything written to disk. So think before typing w.
I want to add a new partition. Type n to create a partition. I want to
have a 2TB partition and the rest to another partition.
When asked for the type, type 29. I'm going to use these partitions in
an array.

Command (m for help): p
Disk /dev/sda: 2.7 TiB, 3000592982016 bytes, 5860533168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: C8877BCC-89D4-F84A-A427-46A4D2886055

Device          Start        End    Sectors   Size Type
/dev/sda1 4294969344 5860533134 1565563791 746.5G Linux RAID
/dev/sda2        2048 4294969343 4294967296     2T Linux RAID

Partition table entries are not in disk order.

The partition seemed fine to me. So I made it permanent by typing w then
q to exit fdisk.

Password Issues On Ubuntu Login

I found myself unable to enter my login credentials when prompted to do so in Ubuntu. I think I might have changed it then forget about it. I've been running the current session for more days than I should have. I forget. So what's the solution to my problem. How do I get in to my system now? It involved getting into the grub menu somehow. I am uncertain as to how to do that exactly in your system. So there's a couple of ways to do it (finger's crossed). When booting at system start, use the esc key or the shift key. The first one worked for me. The timing is key. Wait until the bios banner shows then hit the esc key once. I am using Ubuntu 22.04.4 here. I have a current version of grub. The grub menu will give you options and the one you want is: root. Yes you want root privileges to set the root password. It should give you a terminal access where you can issue commands. Type: #mount -rw -o -s remount / ==> this command mounts the filesyste...

New ZFS Pool And the New 4TB Hard Drive

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2024 So Far

I have a feeling of moving earth or walking off my itchiness. The growing fat in my belly tells me I am failing on many occasions to give in to this urge. My eyes are blurred by morning glory. I remember my father having the same ritual in the morning. After his weak stroke, he couldn't speak much, just a grunt but he would demonstrate with hand how he liked to wash his face. The weather wasn't helping. It's been raining cats and dogs the past week. The province of Rizal was soaked and spilled volumes of water into the bay and Laguna lake. Our Caimito tree was cut to no more than 4 feet from the ground. It was towering above the corrugated sheet metal of our roof. Now it lay horizontal on the yard. I calculated it could be made into a whole table and chairs set by a talented carpenter artist. I showed Lino the two big pieces of trunk that could only be moved if cut by a power saw in place. The road widening project in San Mateo was in the middle stage. One side of the road ...

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