Roger Price composed on 2024-11-26 03:57 (UTC-0500):

> Felix Miata wrote:

>> Members of a raid filesystem have to be seen as an integral part of one 
>> filesystem,
>> a special case. It's another reason I stick to use of LABELs.

>> # lsblk -f | egrep -A1 'raid|NAME'
>> NAME         FSTYPE            FSVER LABEL          UUID FSAVAIL FSUSE% 
>> MOUNTPOINTS
>> --
>> ├─sda5       linux_raid_member 1.0   msi85:0tmp     6cb3…
>> │ └─md0      ext4              1.0   hr18md0tmp     8aea…
>> --
>> ├─sdb5       linux_raid_member 1.0   msi85:0tmp     6cb3…
>> │ └─md0      ext4              1.0   hr18md0tmp     8aea…

> It makes sense to me that md0 should be reported twice with the same UUID, 
> but 
> surely the underlying hardware should be getting a unique UUID?

Answered well upthread by others.

> The use of LABELs is attractive, but I notice you have the same label for 
> sda5 
> and sdb5.  This means you cannot intervene on "msi85:0tmp".  You have to 
> specify 
> sda5 or sdb5.

Not at all. hr18md0tmp is an ext4 filesystem LABEL. I wouldn't want to disturb 
its
two underlying partitions separately except via mdadm.
-- 
Evolution as taught in public schools is, like religion,
        based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata

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