Help: Driver not found Problem

[Eric Lee]

Hi,

I encountered such errors when login the target. The target was
implemented by using iET.

#iscsiadm -m node -l
Logging in to [iface: default, target:
iqn.2009-10.master:storage.disk1.sys1.xyz, portal:
192.168.140.136,3260]
iscsiadm: Could not login to [iface: default, target:
iqn.2009-10.master:storage.disk1.sys1.xyz, portal:
192.168.140.136,3260]:
iscsiadm: initiator reported error (12 - iSCSI driver not found.
Please make sure it is loaded, and retry the operation)

Then I notice that the system does not load iscsi_tcp module. So I'm
trying to load this module.
#modprobe iscsi_tcp
iscsi_tcp: Unknown symbol iscsi_tcp_segment_done
iscsi_tcp: Unknown symbol iscsi_segment_seek_sg
iscsi_tcp: Unknown symbol iscsi_tcp_segment_unmap
iscsi_tcp: Unknown symbol iscsi_tcp_hdr_recv_prep
iscsi_tcp: Unknown symbol iscsi_tcp_cleanup_task
iscsi_tcp: Unknown symbol iscsi_tcp_conn_setup
iscsi_tcp: Unknown symbol iscsi_tcp_r2tpool_alloc
iscsi_tcp: Unknown symbol iscsi_tcp_r2tpool_free
iscsi_tcp: Unknown symbol iscsi_tcp_task_xmit
iscsi_tcp: Unknown symbol iscsi_tcp_recv_skb
iscsi_tcp: Unknown symbol iscsi_segment_init_linear
iscsi_tcp: Unknown symbol iscsi_tcp_conn_get_stats
iscsi_tcp: Unknown symbol iscsi_tcp_task_init
iscsi_tcp: Unknown symbol iscsi_tcp_dgst_header
iscsi_tcp: Unknown symbol iscsi_tcp_conn_teardown
FATAL: Error inserting iscsi_tcp
(/lib/modules/2.6.18-128.el5/kernel/drivers/scsi/iscsi_tcp.ko):
Unknown symbol in module, or unknown parameter (see dmesg)

So obviously I cannot load the module properly. So I don't know how to
fix that.

My OS is Cent OS 5.3 32bits. The kernel source codes are provided by
distributor.

Could anyone tell me how to fix that problem?

Thank you very much.

Regards,

Eric Lee

[Mike Christie]

You are missing libiscsi_tcp. Are you running the kernel modules from
the open-iscsi.org tarball or from a kernel you built?

[Lee Amy]

Mike,

I downloaded the tarball from open-iscsi.org then build from source
and install. It runs well when build.

Thanks.

Eric

[Lee Amy]

Hi,

It builds well but when I want to load the module it always shows the
error messages I pasted.

Could you tell me how to deal with it?

Thanks.

Eric

[Mike Christie]

Lee Amy wrote:
>
> It builds well but when I want to load the module it always shows the
> error messages I pasted.
>
> Could you tell me how to deal with it?
>

I am still trying to figure that out :)

If after you do make install if you do a

depmod -a

then try modprobe iscsi_tcp does that load all the modules
iscsi_tcp
libiscsi_tcp
libiscsi
scsi_transport_iscsi

?

[bjornnoss]

Hi, I had the exact same problem as Eric and I tried to do: depmod -a;
modprobe iscsi_tcp and it seems to work:
lsmod | grep iscsi_tcp
iscsi_tcp 17036 0
libiscsi_tcp 22148 1 iscsi_tcp
libiscsi 45712 2 iscsi_tcp,libiscsi_tcp
scsi_transport_iscsi 36512 3 iscsi_tcp,libiscsi
scsi_mod 161016 10
iscsi_tcp,libiscsi,scsi_transport_iscsi,sg,sr_mod,usb_storage,ses,sd_mod,libata,megaraid_sas

So thank you...

Why did it not work the first time, and do have have to issue the
depmod -a command after every reboot of the system before modprobe
iscsi_tcp witch is done in the open-iscsi startup script? Any other
things a have to be awere of befause of this?

Enviroment: Debian Lenny x64
iSCSI: Dell PowerVault MD3000i

-bjornoss

[Mike Christie]

bjornnoss wrote:
> Why did it not work the first time, and do have have to issue the
> depmod -a command after every reboot of the system before modprobe
> iscsi_tcp witch is done in the open-iscsi startup script? Any other
> things a have to be awere of befause of this?
>

Not sure yet. I cannot replicate it here and no one follows up :)

In fedora at least, when I run make install I get this:
make[2]: Entering directory `/usr/src/kernels/2.6.27.25-78.2.56.fc9.i686'
INSTALL
/home/mnc/kernel/iscsi/open-iscsi/git/open-iscsi/open-iscsi-2.0-871.1/kernel/iscsi_tcp.ko
INSTALL
/home/mnc/kernel/iscsi/open-iscsi/git/open-iscsi/open-iscsi-2.0-871.1/kernel/libiscsi.ko
INSTALL
/home/mnc/kernel/iscsi/open-iscsi/git/open-iscsi/open-iscsi-2.0-871.1/kernel/libiscsi_tcp.ko
INSTALL
/home/mnc/kernel/iscsi/open-iscsi/git/open-iscsi/open-iscsi-2.0-871.1/kernel/scsi_transport_iscsi.ko
DEPMOD 2.6.27.25-78.2.56.fc9.i686

and the depmod step above will edit
/lib/modules/$kernel_version/modules.dep
So when I do modprobe iscsi_tcp (or when the init script does it) it
loads fine.

Maybe it is due to a diff in fedora and debian.

Could you tell me when you run make install or depmod -a does a file in
/lib/modules/$your_kernel/modules.dep get updated or created? In that
file do you see some info for libiscsi_tcp? When you reboot your system
is the file still there?

[bjornnoss]

On 11 Nov, 17:24, Mike Christie <micha...@cs.wisc.edu> wrote:
> Could you tell me when you run make install or depmod -a does a file in
> /lib/modules/$your_kernel/modules.dep get updated or created? In that
> file do you see some info for libiscsi_tcp? When you reboot your system
> is the file still there?

It works fine after reboot, so any changes the first depmod -a did is
still there.
And if a now (when its working) run depmod -a again, all the
timestamps on the files i the /lib/modules/$your_kernel/ dir is
updated, but the filesizes is the same.
Output of cat modules.dep | grep -B 2 -A 2 iscsi_tcp :
/lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/qla1280.ko: /
lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/scsi_mod.ko
/lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/ips.ko: /lib/
modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/scsi_mod.ko
/lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/iscsi_tcp.ko: /
lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/libiscsi.ko /lib/
modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/
scsi_transport_iscsi.ko /lib/modules/2.6.26-2-openvz-amd64/kernel/
drivers/scsi/scsi_mod.ko
/lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/mvsas.ko: /lib/
modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/libsas/libsas.ko /
lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/ata/libata.ko /lib/
modules/2.6.26-2-openvz-amd64/kernel/drivers/acpi/dock.ko /lib/modules/
2.6.26-2-openvz-amd64/kernel/drivers/base/firmware_class.ko /lib/
modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/
scsi_transport_sas.ko /lib/modules/2.6.26-2-openvz-amd64/kernel/
drivers/scsi/scsi_mod.ko
/lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/BusLogic.ko: /
lib/modules/2.6.26-2-openvz-amd64/kernel/drivers/scsi/scsi_mod.ko

does this help?