инструменты LVM2 (LVM2 tools)
UNIQUE NAMES
VG names should be unique. vgcreate will produce an error if the
specified VG name matches an existing VG name. However, there
are cases where different VGs with the same name can appear to
LVM, e.g. after moving disks or changing filters.
When VGs with the same name exist, commands operating on all VGs
will include all of the VGs with the same name. If the ambiguous
VG name is specified on the command line, the command will
produce an error. The error states that multiple VGs exist with
the specified name. To process one of the VGs specifically, the
--select option should be used with the UUID of the intended VG:
--select vg_uuid=<uuid>
An exception is if all but one of the VGs with the shared name is
foreign (see lvmsystemid(7)). In this case, the one VG that is
not foreign is assumed to be the intended VG and is processed.
LV names are unique within a VG. The name of an historical LV
cannot be reused until the historical LV has itself been removed
or renamed.
