I've figured it out. It turned out that the iscsi disk was offline. I
managed to turn if online from within Windows but how would turn it
online/offline from with Linux ?

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Mike Christie
Sent: 20 April 2010 06:14
To: [email protected]
Cc: dom2319
Subject: Re: kernel call trace after successfully logging into our portal

On 04/19/2010 06:14 AM, dom2319 wrote:
> DebianTemp:~# [   58.284344] register_blkdev: cannot get major 8 for
> sd

I think this error is related to the one below. I think you just need to 
update your kernel.

 > Also with fdisk I get:
 >
 > DebianTemp:~# fdisk /dev/sda
 >
 > Unable to open /dev/sda
 > DebianTemp:~#
 >


This one I have not seen before. Do you know what module isgetting 
loaded? It might be due to the other block dev error above.

If you are trying to read the module from a iscsi disk, then the problem 
is probably that there was a bug in the scsi layer above and you cannot 
access the disk due to it, so you get the error below.

If the module was on some local disk, then I am not sure.


> I get the following call traces:
>
> [ 3699.105931] INFO: task modprobe:1342 blocked for more than 120
> seconds.
> [ 3699.105945] "echo 0>  /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 3699.105949] modprobe      D ffff8800815bd000     0  1342      1
> [ 3699.105955]  ffff880006881838 0000000000000286 ffff880007ded818
> ffff880006143800
> [ 3699.105961]  ffff8800014eca40 ffff8800014bf640 ffff8800014eccc0
> 000000008020e810
> [ 3699.105967]  0000000000000000 ffff8800067e2368 00000000000024b2
> ffff8800815bd000
> [ 3699.105972] Call Trace:
> [ 3699.105986]  [<ffffffff8020e911>] xen_clocksource_read+0xd/0x9c
> [ 3699.105992]  [<ffffffff80264711>] sync_page+0x0/0x41
> [ 3699.105996]  [<ffffffff80243f1e>] getnstimeofday+0x39/0x98
> [ 3699.106001]  [<ffffffff80264711>] sync_page+0x0/0x41
> [ 3699.106006]  [<ffffffff802b12eb>] blkdev_readpage+0x0/0xf
> [ 3699.106011]  [<ffffffff80434297>] io_schedule+0x5c/0x9e
> [ 3699.106016]  [<ffffffff8026474d>] sync_page+0x3c/0x41
> [ 3699.106020]  [<ffffffff8043440a>] __wait_on_bit_lock+0x36/0x66
> [ 3699.106028]  [<ffffffff802646fe>] __lock_page+0x5e/0x64
> [ 3699.106034]  [<ffffffff8023f6b7>] wake_bit_function+0x0/0x23
> [ 3699.106038]  [<ffffffff80264cf3>] read_cache_page_async+0xc3/0x121
> [ 3699.106044]  [<ffffffff80266464>] read_cache_page+0x6/0x3b
> [ 3699.106049]  [<ffffffff802cfd57>] read_dev_sector+0x2a/0x88
> [ 3699.106056]  [<ffffffff802d0520>] adfspart_check_ICS+0x0/0x164
> [ 3699.106060]  [<ffffffff802d0547>] adfspart_check_ICS+0x27/0x164
> [ 3699.106065]  [<ffffffff802d0520>] adfspart_check_ICS+0x0/0x164
> [ 3699.106070]  [<ffffffff802d040c>] rescan_partitions+0x123/0x237
> [ 3699.106075]  [<ffffffff802b0f7b>] do_open+0x234/0x2e8
> [ 3699.106079]  [<ffffffff802d522c>] sysfs_ilookup_test+0x0/0xf
> [ 3699.106084]  [<ffffffff802b109f>] __blkdev_get+0x70/0x82
> [ 3699.106097]  [<ffffffff802d0293>] register_disk+0xe7/0x13d
> [ 3699.106103]  [<ffffffff80305963>] add_disk+0x3a/0x87
> [ 3699.106110]  [<ffffffffa01401e5>] :sd_mod:sd_probe+0x317/0x3d8
> [ 3699.106117]  [<ffffffff80378cac>] driver_probe_device+0xd0/0x14d
> [ 3699.106121]  [<ffffffff80378d6f>] __driver_attach+0x46/0x6d
> [ 3699.106125]  [<ffffffff80378d29>] __driver_attach+0x0/0x6d
> [ 3699.106129]  [<ffffffff80378480>] bus_for_each_dev+0x44/0x6f
> [ 3699.106134]  [<ffffffff8037889e>] bus_add_driver+0xae/0x1e4
> [ 3699.106139]  [<ffffffff80378ff6>] driver_register+0x84/0xe7
> [ 3699.106144]  [<ffffffffa014608b>] :sd_mod:init_sd+0x8b/0xee
> [ 3699.106150]  [<ffffffff8024c5a2>] sys_init_module+0x191b/0x1ab1
> [ 3699.106170]  [<ffffffffa00aab89>] :scsi_mod:scsi_set_medium_removal
> +0x0/0x70
> [ 3699.106179]  [<ffffffff8020b528>] system_call+0x68/0x6d
> [ 3699.106183]  [<ffffffff8020b4c0>] system_call+0x0/0x6d
> [ 3699.106187]
>
> Also with fdisk I get:
>
> DebianTemp:~# fdisk /dev/sda
>
> Unable to open /dev/sda
> DebianTemp:~#
>
>
> Would anybody be able to tell me what's happening?
>

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