On 2/3/20 2:56 PM, Patrick O'Callaghan wrote:
On Mon, 2020-02-03 at 12:17 -0800, Mike Wright wrote:
> Some quick notes about lvm. The essence of LVM is the volume group
> (VG). Volume groups contain logical volumes (LV). Volume groups are
> defined by specifying the raw devices, the physical volumes (PV), that
> provide the storage. In order to attach a PV to a VG the raw device
> /dev/sdX must be tagged as a PV. Until that is done (pvcreate) a raw
> device cannot be part of a VG. Once within a VG the raw device isn't
> really mountable because the filesystem on it is created at the LV
> level, not the raw device level.
Yes, I already understand that much in theory.
> Now as to sd5: try the command "pvs". It will show the tagged (defined)
> PVs AND it will show which, if any, VGs that they belong to.
$ sudo pvs
PV VG Fmt Attr PSize PFree
/dev/sda3 fedora_localhost-live lvm2 a-- <128.00g <17.80g
/dev/sda4 fedora_localhost-live lvm2 a-- <16.00g <16.00g
$
> If sda5 is NOT listed by "pvs" then your mount environment is mixed
> raw/LVM.
That appears to be the case.
> Any way you look at it, you may mount both the raw device and
> the LV at the same point but only the most recent will be visible. I
> also have a hunch that mounting a raw device that is part of a VG is an
> invitation to disaster.
It wouldn't surprise me. How can I unravel this (short of a complete
reinstallation)? I'm not enamoured of LVM and would be quite happy to
revert to basic partitioning, but if that isn't feasible I'm willing to
move forward to LVM-only if that's what it takes.
I just went through the beginning of this thread. The issue was that
attempting to mount /dev/fedora_localhost-live/home required a password.
Are you sure there's a problem?
Your mount output shows root, swap, home. / and swap are on LVs and
/home is /dev/sda5. As far as the system is concerned
/dev/fedora_localhost-live/home is just another partition that, as any
other, requires root privilege to mount.
Unless I'm really missing something here...
:m
PD: Ten paciencia chapulín. LVM podría ser tu amigo.