Re: [gentoo-user] Re: swaps mounted randomly [not out of the woods yet]

[Michael]

On Thursday, 19 March 2020 18:32:12 GMT n952162 wrote:
> On 2020-03-19 19:04, Michael wrote:
> > On Thursday, 19 March 2020 17:03:15 GMT Ian Zimmerman wrote:
> >> On 2020-03-19 10:59, n952162 wrote:
> >>> I changed the UUID of all the partitions of the second drive and now
> >>> all my devices are linked to in /dev/disk/by-uuid. I still have
> >>> no/dev/disk/by-label, though. Also, my swap file on a mounted drive
> >>> wasn't mounted, which was my original problem ;-(
> >>
> >> Do they in fact have labels?  Just checking.
> >>
> >> Also, you're not not clear if your _partition_ still isn't getting
> >> mounted, or just the swap file not getting activated.
> >>
> >> For a problem like this, there _has_ to be something in the log.
> >
> > We're using the term 'partition' here, but to avoid confusion, we have GPT
> > partition table UUIDs (PARTUUID) and we have filesystem UUIDs (UUID).
> >
> > Similarly, we also have filesystem labels and GPT partition labels.
> >
> > Therefore it helps if there is consistency in the IDs being used to mount
> > partitions.
>
> I used   the UUID column of blkid(8) on the fstab entry, with UUID=.  If
> that is the partition UUID, where, how, and wherefore are filesystem UUIDs?

lsblk -o +PARTUUID,UUID

will show both, but blkid also print filesystem UUID and partition table 
PARTUUID.