Re: [Nbd] Negotiating... stalls

[Christian Müller <udu8@...4...>]

Hi ,

i had the same problem but you get much more output if you compile with debug 
on, and the daemon does not go in the background.

i went back for nfs at the moment but it is soooooooooo 
slow :---(((((((((((( *snief*

chris


On Wednesday 02 June 2004 03:44, Yaroslav Halchenko wrote:
> Dear Developers,
>
> I've got a minute and decided again to try to setup nbd on our cluster.
>
> We're running unstable debian so I have 2.7-2 version installed.
> All nodes are running 2.6.7-rc1-bk3
> and nbd-server is started up on all the nodes via command like:
> /bin/nbd-server 1026 /dev/hda10
>
> now when I'm trying to connect client to any of the nodes - nothing
> really happens:
>
> /sbin/nbd-client node3 1026 /dev/nb1
> Negotiation:
>
> and it sits like that for long time
>
> on node3
> node3:~# lsof -i tcp:1026
> COMMAND     PID USER   FD   TYPE  DEVICE SIZE NODE NAME
> nbd-serve 15185 root    3u  IPv4 9393088       TCP *:1026 (LISTEN)
> nbd-serve 15185 root    4u  IPv4 9393089       TCP
> node3.rutgers.edu:1026->node2.rutgers.edu:33888 (ESTABLISHED)
>
> so there is something going on but nothing really happenning...
>
> Probably nbd-server was compiled for debian without logging facility
> because in syslog I see nothing besides
> nbd0: NBD_DISCONNECT
> nbd1: NBD_DISCONNECT
> nbd2: NBD_DISCONNECT
>
> aha now after long waiting I've got on the node which is client and
> server alltogether in syslog:
>
> nbd0: Request when not-ready
> end_request: I/O error, dev nbd0, sector 0
> Buffer I/O error on device nbd0, logical block 0
> Buffer I/O error on device nbd0, logical block 1
> Buffer I/O error on device nbd0, logical block 2
> Buffer I/O error on device nbd0, logical block 3
> Buffer I/O error on device nbd0, logical block 4
> Buffer I/O error on device nbd0, logical block 5
> Buffer I/O error on device nbd0, logical block 6
> Buffer I/O error on device nbd0, logical block 7
> Buffer I/O error on device nbd0, logical block 8
> Buffer I/O error on device nbd0, logical block 9
> Buffer I/O error on device nbd0, logical block 10
> Buffer I/O error on device nbd0, logical block 11
> Buffer I/O error on device nbd0, logical block 12
> Buffer I/O error on device nbd0, logical block 13
> Buffer I/O error on device nbd0, logical block 14
> Buffer I/O error on device nbd0, logical block 15
> nbd0: Request when not-ready
> end_request: I/O error, dev nbd0, sector 0
> Buffer I/O error on device nbd0, logical block 0
>
>
> So how can I debug this situation?