loop device for file on nfs?

Alexander V. Lukyanov (lav@video.yars.free.net)
Tue, 4 Mar 1997 21:31:27 +0300 (MSK)

I tried to setup loop device for file on nfs filesystem, but this
does not work (for local file it worked). When cat'ing the device
/dev/loop0, it says IO error and this is written to log:

Mar 4 21:05:51 npc10 kernel: loop: block 0 not present
Mar 4 21:05:51 npc10 kernel: end_request: I/O error, dev 07:00, sector 0
Mar 4 21:05:51 npc10 kernel: loop: block 1 not present
Mar 4 21:05:51 npc10 kernel: end_request: I/O error, dev 07:00, sector 2
Mar 4 21:05:51 npc10 kernel: loop: block 2 not present
Mar 4 21:05:51 npc10 kernel: end_request: I/O error, dev 07:00, sector 4
Mar 4 21:05:51 npc10 kernel: loop: block 3 not present
Mar 4 21:05:51 npc10 kernel: end_request: I/O error, dev 07:00, sector 6

This is with kernel 2.0.27. Is it possible to loop-mount files from nfs?
If it is not supported, is it hard to add?