[ENBD] nbd 2.4.20 successful but with some problems...

[Kai Chen]

Dear Peter,

Thank you for your quick reply.  Yes, I was indeed using nbd-2.2.29.

I just switched to nbd-2.4.20 (BTW, your nbd-2.4.21.tgz or nbd-current.tgz 
has problems and cannot be unzipped correctly...  Could you please check?), 
and it worked.  However, I did encounter other problems.

On the server side, when serving large partitions (e.g., 5 GB or more), the 
system failed (during client-side's mkfs) with:

file: Can not seek locally to offset 2149299200!
nbd-client-server: writenet exits FAIL
file: Can not seek locally to offset 2149298176!
nbd-client-server: writenet exits FAIL
file: Can not seek locally to offset 2149300224!

And then:

nbd-server: Read returned 0 after select predicted read!
nbd-server: Read returned 0 after select predicted read!

On the client side, the system just spit out some error messages then froze 
up completely.  The only way to fix it was to restart/reboot the machine 
using the reset button.

When the server is serving small partitions (e.g., less than 3GB), it seemed 
to survive during mkfs.  After making the file system, however, the client 
side again froze up completely during a cp operation (I tried to copy the 
entire /usr tree onto /mnt on which /dev/nda was mounted).

And the server side gave:

nbd-server: Read returned 0 after select predicted read!
nbd-server: Read returned 0 after select predicted read!

Please advise.  Thanks.

Kai
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