pvmove thin volume doesn't move

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Hi.

I've added a new (faster) disk to a VG and now want to move a thinly
provisioned LV to the new PV.=A0 When I try it doesn't find any data to
move though:

# pvmove -n /dev/rootvol_tmp/var /dev/sda7 /dev/sdc
=A0 No data to move for rootvol_tmp.

both disks are in the VG though:

# pvs
=A0 PV=A0=A0=A0=A0=A0=A0=A0=A0 VG=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Fmt=A0 A=
ttr PSize=A0=A0=A0 PFree=A0=A0=20
=A0 /dev/sda7=A0 rootvol_tmp=A0=A0 lvm2 a--=A0=A0 170.89g=A0=A0=A0 3.62g
=A0 /dev/sdc=A0=A0 rootvol_tmp=A0=A0 lvm2 a--=A0 <279.46g <151.46g

# lvdisplay --maps /dev/rootvol_tmp/var=20
=A0 --- Logical volume ---
=A0 LV Path=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 /dev/rootvol_tmp/v=
ar
=A0 LV Name=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 var
=A0 VG Name=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 rootvol_tmp
=A0 LV UUID=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 jurBnO-APSJ-fbp1-D=
hWZ-8475-vrDh-heccun
=A0 LV Write Access=A0=A0=A0=A0=A0=A0=A0 read/write
=A0 LV Creation host, time localhost, 2019-11-10 11:11:17 -0500
=A0 LV Pool name=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 pool00
=A0 LV Status=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 available
=A0 # open=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 1
=A0 LV Size=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 55.27 GiB
=A0 Mapped size=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 96.94%
=A0 Current LE=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 14150
=A0 Segments=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 1
=A0 Allocation=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 inherit
=A0 Read ahead sectors=A0=A0=A0=A0 auto
=A0 - currently set to=A0=A0=A0=A0 8192
=A0 Block device=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 253:17
=A0=A0=20
=A0 --- Segments ---
=A0 Virtual extents 0 to 14149:
=A0=A0=A0 Type=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 thin
=A0=A0=A0 Device ID=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 3

The LV is a thinly provisioned LV:

# lvs
  LV              VG            Attr       LSize    Pool   Origin Data%  Me=
ta%  Move Log Cpy%Sync Convert
  pool00          rootvol_tmp   twi-aotz-- <138.88g               80.32  40=
.28                          =20
  var             rootvol_tmp   Vwi-aotz--   55.27g pool00        96.94

Any ideas?

Cheers,
b.

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