image_filter on error_page location

[Reinis Rozitis]

Hello,
I can't figure how to solve such issue - nginx seems not to apply image_filter in case the picture comes from upstream via internal 
error_page.


I have something like (if picture is prefixed with sm_ a dynamic thumbnail is made and the original saved locally):

location ~ /sm_ {
        rewrite (.*)/sm_(.*) $1/$2 break;
        image_filter   crop  100 100;
        error_page      404 = @store;
}

location @store {
        internal;
        proxy_pass           http://backend/$uri;
        proxy_store          on;

}


If the file doesn't exist on the server client gets the original/full sized image, on the second request when the file is stored on 
the nginx box the image/response gets resized.


Also requesting directly from the upstream within the location block:

location ~ /sm_ {
        rewrite (.*)/sm_(.*) $1/$2 break;
        image_filter   crop  100 100;
        proxy_pass           http://backend/$uri;
}

works as expected but in this case obviously no local copy (which is necessary) is made.

Any suggestions?


wbr
rr