Tim Woodall <debianu...@woodall.me.uk> writes: > On Mon, 16 Sep 2024, Steve Keller wrote: > > > I don't see how this can be done in the current Debian 12.
> Not sure because I've previously battled the opposite problem but I'd > start here in lvm.conf > > # Configuration option devices/scan_lvs. > # Scan LVM LVs for layered PVs, allowing LVs to be used as PVs. > # When 1, LVM will detect PVs layered on LVs, and caution must > # be > # taken to avoid a host accessing a layered VG that may not > # belong > # to it, e.g. from a guest image. This generally requires > # excluding > # the LVs with device filters. Also, when this setting is > # enabled, > # every LVM command will scan every active LV on the system > # (unless > # filtered), which can cause performance problems on systems > # with > # many active LVs. When this setting is 0, LVM will not detect > # or > # use PVs that exist on LVs, and will not allow a PV to be > # created on > # an LV. The LVs are ignored using a built in device filter that > # identifies and excludes LVs. > scan_lvs = 0 Thanks, that's exactly what I was looking for. I've set scan_lvs = 1 and called vgscan, and now I see the embedded PV and can activate it. In older Debian releases this was default and changed sometime after Debian 9. Steve
