On 3/29/23 21:45, Ranjan Maitra wrote:
I am trying to modify my /etc/fstab to mount a drive (where I want to place a backup). From looking at the current setup created by anaconda, it looks like I have to setup using UUID or LABEL (however these seem to be blank, see below).
First, my setup.
I have one SSD that has / and all the partitions associated with it.
I have three additional drives, two of which are hardware (for historical reasons) RAIDed, and have /home in them, and a third new drive that is a "free agent" (sorry for not knowing the correct term, but I hope that I can convey the meaning).
I want this to be mounted at boot as /mnt/whatever (I have verified that this mount-point has been created and exists).
So, I look at my /dev/disk/by-disk-seq and see:
~$ ls
1@ 2@ 4@ 5@ 6@
~$ ll *
lrwxrwxrwx. 1 root root 9 Mar 29 14:01 1 -> ../../sda
lrwxrwxrwx. 1 root root 9 Mar 29 14:01 2 -> ../../sdb
lrwxrwxrwx. 1 root root 9 Mar 29 14:01 4 -> ../../sdc
lrwxrwxrwx. 1 root root 9 Mar 29 14:01 5 -> ../../sr0
OK, there is an a, b and c. The d is the first drive that has the /, the sr0 is the swap, and the a, b and c are the three drives.
zram0 is the swap. sr0 is an optical disk drive of some sort.
It appears to me that the sda and sdc are the ones raided (they have the same UUID and also lsblk indicates so (I have made up the part numbers here, for security). I have to say that I expected sda and sdb to be the RAIDed drives, I thought that sdc would be the new one that has been put in. But perhaps I am wrong in my understanding.
The UUID has no security ramifications. It only matters if someone has
physical access to your computer and if so, they would be able to read
them anyway. The disk numbering depends on which port they're plugged
into and which order those ports are scanned.
$ lsblk -f
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS
sda isw_raid_member 1.3.00
sda1 ext4 1.0 xxxxx
md126
md126p1 ext4 1.0 xxxxx 116.3G 8% /home
md127
sdb
sdc isw_raid_member 1.3.00
sdc1 ext4 1.0 xxxxx
md126
md126p1 ext4 1.0 xxxxx 116.3G 8% /home
md127
sdd
sdd1 vfat FAT32 E56F-E0D8
sdd2 ext4 1.0 yyyyy 595.9M 8% /boot
sdd3 vfat FAT32 1616-D18F 933.7M 2% /boot/efi
sdd4 ext4 1.0 uuuuu 43.2G 0% /tmp
sdd5 ext4 1.0 vvvvv 43.2G 0% /usr/local
sdd6 swap 1 wwwww [SWAP]
sdd7 ext4 1.0 zzzzz 76.3G 14% /
sr0
zram0 [SWAP]
But, my problem is that /dev/sdb does not appear to have a UUID number. Indeed, I get nothing back when I try:
$ sudo blkid /dev/sdb1
Does that give nothing or an error? That listing indicates that the
drive isn't partitioned at all. What does "fdisk -l /dev/sdb" show? Or
run the "Disks" application (if you have Gnome) to see what's there and
create a partition.
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