Thanks, very much, to all!
To answer the questions:
> From: Peter Boy <pboy@xxxxxxxxxxxxx>
> Date: Thu, 30 Mar 2023 08:03:25 +0200
>
> > I have three additional drives, two of which are hardware (for historical reasons) RAIDed, and have /home
>
> As it looks, sda and sdc are software raid. If you had a hardware raid, all disks attached to the hardware raid controller show up as one drive. But doesn’t matter as long as it works.
>
I see, thanks! I assumed HW RAID since it was set up through the BIOS ages ago.
> > But, my problem is that /dev/sdb does not appear to have a UUID number. Indeed, I get nothing back when I try:
>
> At first you have to create a partition and a file system on the new drive, which seems to be /dev/sdb. (After that you should see UUIDs).
>
> What says
>
> cfdisk /dev/sdb ?
So, I get a new screen come up, and "select label type" from "gpt", "dos", "sgi" and "sun". I guess this should be "gpt", so I tried that.
The process forward seemed straightforward, and I got a filesystem created with "Label" gpt, "identifier "some long alphanumeric name" and "Partition UUID" and of "Partition type: Linux file system", both the last with two other long alphanumeric names.
I went into "Type" but there is no option for "ext4" ("or xfs", for that matter) and so left it as "Linux file system" and then "Write" (wrote) to disk ("yes") and "Quit" to move on.
>
> If you can, create a partition and afterwards a filesystem. Then try e.g.
> mount -t xfs|ext4 /dev/sdb1 /mnt
Here, however, I get:
$ sudo mount -t ext4 /dev/sdb1 /mnt
mount: /mnt/backup: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error.
dmesg(1) may have more information after failed mount system call.
dmesg says lots of selinux-related things, as always, but perhaps the one seems more useful:
[64087.184258] EXT4-fs (sdb1): VFS: Can't find ext4 filesystem
and
$ lsblk -f
now has the additional entry:
sdb
└─sdb1
But that is it. Nothing more
I suspect that somewhere above, I should have been able to say that it was an ext4, but I can not figure out which of the "TYPE"s would have given me that.
To answer the earlier questions:
> From: Samuel Sieb <samuel@xxxxxxxx>
> Date: Wed, 29 Mar 2023 22:07:15 -0700
Now,
$ sudo blkid /dev/sdb1
/dev/sdb1: PARTUUID="some long alphanumeric number"
(earlier, it gave nothing at all).
$ fdisk -l /dev/sdb
Disk /dev/sdb: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: WDC WD2005FBYZ-0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: massive alphanumeric number
Device Start End Sectors Size Type
/dev/sdb1 2048 3907028991 3907026944 1.8T Linux filesystem
> From: Joe Zeff <joe@xxxxxxx>
> Date: Thu, 30 Mar 2023 00:06:04 -0600
> So use gparted to partition and format it, and give it a label because
> it's easier to type a label into fstab than a UUID.
So, I have parted, and that is probably good enough (I am currently remote on the machine).
So, I do:
$ sudo parted /dev/sdb
GNU Parted 3.5
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) TYPE-UUID
align-check TYPE N check partition N for TYPE(min|opt)
alignment
help [COMMAND] print general help, or help on
COMMAND
mklabel,mktable LABEL-TYPE create a new disklabel (partition
table)
mkpart PART-TYPE [FS-TYPE] START END make a partition
name NUMBER NAME name partition NUMBER as NAME
print [devices|free|list,all] display the partition table, or
available devices, or free space, or all found partitions
quit exit program
rescue START END rescue a lost partition near START
and END
resizepart NUMBER END resize partition NUMBER
rm NUMBER delete partition NUMBER
select DEVICE choose the device to edit
disk_set FLAG STATE change the FLAG on selected device
disk_toggle [FLAG] toggle the state of FLAG on selected
device
set NUMBER FLAG STATE change the FLAG on partition NUMBER
toggle [NUMBER [FLAG]] toggle the state of FLAG on partition
NUMBER
type NUMBER TYPE-ID or TYPE-UUID type set TYPE-ID or TYPE-UUID of
partition NUMBER
unit UNIT set the default unit to UNIT
version display the version number and copyright information of GNU Parted
I guess I can move mklabel, and then name it (can this be anything?). But where does it get the filesystem type from?
I did try type NUMBER UUID and the UUID number given above, but got:
Error: Partition doesn't exist.
Thanks again!
Best wishes,
Ranjan
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