swejis wrote:
> I increased the I/O on the initiator yesterday by placing the LUN
> holding our mySQL database on this server. Everything looks 'quite'
> well part from the error I got this morning. All nop time out set to
> zero.
> 
> Jul  1 07:15:23 manjula syslog-ng[17906]: STATS: dropped 0
> Jul  1 07:20:38 manjula kernel: Pid: 0, comm: swapper Tainted:
> G        N 2.6.25.5-1.1-default #1
> Jul  1 07:20:38 manjula kernel:
> Jul  1 07:20:38 manjula kernel: Call Trace:
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020d686>] dump_trace
> +0xc4/0x576
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020db78>] show_trace
> +0x40/0x57
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8044f865>] _etext+0x72/0x7b
> Jul  1 07:20:38 manjula kernel:
> [<ffffffff8841c47a>] :libiscsi:iscsi_conn_failure+0x1a/0x90
> Jul  1 07:20:38 manjula kernel:
> [<ffffffff8842960b>] :iscsi_tcp:iscsi_tcp_state_change+0x41/0x5e
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803ff632>] tcp_done
> +0x61/0x70
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8040339f>] tcp_reset
> +0x55/0x59
> Jul  1 07:20:38 manjula kernel:  [<ffffffff80409add>]
> tcp_rcv_established+0x981/0xd30
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8040fc7d>] tcp_v4_do_rcv
> +0x31/0x1d3
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8041035f>] tcp_v4_rcv
> +0x540/0x7c0
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803f5bd6>]
> ip_local_deliver_finish+0x124/0x1f9
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803f5d1d>] ip_local_deliver
> +0x72/0x7a
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803f57e6>] ip_rcv_finish
> +0x306/0x32d
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803f5a7c>] ip_rcv+0x26f/
> 0x2a5
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803d478a>] netif_receive_skb
> +0x408/0x42d
> Jul  1 07:20:38 manjula kernel:  [<ffffffff882350f8>] :tg3:tg3_poll
> +0x7d8/0xae1
> Jul  1 07:20:38 manjula kernel:  [<ffffffff803d2e55>] net_rx_action
> +0xba/0x1fc
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8023ca52>] __do_softirq
> +0x6d/0xe1
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020d3fc>] call_softirq
> +0x1c/0x28
> Jul  1 07:20:38 manjula kernel: DWARF2 unwinder stuck at call_softirq
> +0x1c/0x28
> Jul  1 07:20:38 manjula kernel:
> Jul  1 07:20:38 manjula kernel: Leftover inexact backtrace:
> Jul  1 07:20:38 manjula kernel:
> Jul  1 07:20:38 manjula kernel:  <IRQ>  [<ffffffff8020e94c>] ?
> do_softirq+0x44/0x8b
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8023c823>] ? irq_exit+0x3f/
> 0x80
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020ec03>] ? do_IRQ+0xba/
> 0xd8
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020b0d2>] ? default_idle
> +0x0/0x78
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020c59d>] ? ret_from_intr
> +0x0/0x19
> Jul  1 07:20:38 manjula kernel:  <EOI>  [<ffffffff8024eee7>] ?
> getnstimeofday+0x31/0x88
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020b133>] ? default_idle
> +0x61/0x78
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020b12e>] ? default_idle
> +0x5c/0x78
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020b0d2>] ? default_idle
> +0x0/0x78
> Jul  1 07:20:38 manjula kernel:  [<ffffffff8020b08a>] ? cpu_idle
> +0x92/0xda
> Jul  1 07:20:38 manjula kernel:  [<ffffffff804447fc>] ? start_secondary
> +0x408/0x417
> Jul  1 07:20:38 manjula kernel:
> Jul  1 07:20:38 manjula kernel:  connection3:0: detected conn error
> (1011)
> Jul  1 07:20:39 manjula iscsid: Target dropping connection 0,
> reconnect min 0 max 0
> Jul  1 07:20:39 manjula iscsid: Kernel reported iSCSI connection 3:0
> error (1011) state (3)
> Jul  1 07:20:40 manjula iscsid: connection3:0 is operational after
> recovery (1 attempts)
> 
> Looks like a tcp-reset was received ? Would it help if I start the
> initiator by hand and increased debug-level ?

No. It looks like the target dropped the connection on us. Did you see 
anything on the target logs?

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