Re: The "uniqueness" of UUIDs
> Sent: Tuesday, November 26, 2024 at 2:51 AM
> From: "Roger Price" <debian@rogerprice.org>
> To: "debian-user Mailing List" <debian-user@lists.debian.org>
> Subject: The "uniqueness" of UUIDs
>
> On Tue, 26 Nov 2024, George at Clug wrote:
>
> > "$ lsblk -f" output is very nice ! Thanks.
>
> I tried this and noticed UUID duplication in the output. Here is part of what I
> saw:
>
> NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINT
> ...
> sdg
> ...
> ├─sdg6 linux_raid_member 1.0 10.218.0.100:3 f5e37a29-357a-e3f2-c731-e29eddce5e91
> │ └─md3 ext4 1.0 39c24711-ab43-497c-bf3e-12b4032575ac 758.4G 7% /mnt/home
> ...
> sdh
> ...
> ├─sdh6 linux_raid_member 1.0 10.218.0.100:3 f5e37a29-357a-e3f2-c731-e29eddce5e91
> │ └─md3 ext4 1.0 39c24711-ab43-497c-bf3e-12b4032575ac 758.4G 7% /mnt/home
>
> UUID sdg6 = UUID sdh6 ! If I wanted to retire /dev/sdg6 from the Raid array, I
> would not be able to use the UUID, only the unique SDxn.
>
> Aren't UUIDs supposed to be unique? Roger
>
/dev/sdb1: UUID="502aa1c4-77ec-04f2-5f9d-4f5db95ba570" UUID_SUB="7d10136a-cecd-603f-8f27-1fbb39adba5a" LABEL="alarm:Storage" TYPE="linux_raid_member" PARTUUID="11c13521-01"
/dev/sdc1: UUID="502aa1c4-77ec-04f2-5f9d-4f5db95ba570" UUID_SUB="e54cd488-9660-86af-a947-b13d645d1d4d" LABEL="alarm:Storage" TYPE="linux_raid_member"
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