On Tue, Nov 26, 2024 at 03:53:28PM +0100, Roger Price wrote: > On Tue, 26 Nov 2024, Felix Miata wrote: > > > > 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. > > "except via mdadm" : exactly the point I would like to make. mdadm needs to > be able to address the individual underlying devices. Only /dev/sdxn style > addressing can do this, not duplicate UUIDs, or duplicate LABELs.
If those we are talking about are file system UUIDs/LABELs (and all evidence supports that), they *are not* duplicate. They are *the same*. Change "one" and *poof* the "other" will change along. Because they are on the file system, which is sitting astride your MD devices. Cheers -- t
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