HELP ! ESRI-Coverages don't work !

[Christian Schigl]

Dear List,

I try to access ESRI-Coverages (on a mounted nfs-Volume) under umn-mapserv
4.2.5.

I can access them via the ogr-tool "ogrinfo":

ogrinfo /data/gisdat/grenze/bez
Had to open data source read-only.
INFO: Open of `/data/gisdat/grenze/bez'
using driver `AVCBin' successful.
1: ARC (Line String)
2: CNT (Point)
3: LAB (Point)
4: PAL (Polygon)

But Mapserver keeps telling me that " msOGRFileOpen(): OGR error. Open
failed for OGR connection `/data/gisdat/grenze/bez'. File not found or
unsupported format. "


My map-File looks like:

  LAYER
    NAME BezCov
    TYPE POLYGON
    CONNECTIONTYPE OGR
    CONNECTION "/data/gisdat/grenze/bez, 3"
    STATUS default
    MINSCALE 100
    MAXSCALE 1000000

    CLASS
     #COLOR 255 255 255
     OUTLINECOLOR 200 150 100
     SYMBOL 'circle'
     SIZE 3
    END
   END #Layer Bezirk


Can anybody tell me what goes wrong ?

TIA,

Christian