Lustre discuss - Aug 2009 - CRC32C not usable for ISCSI in IB RPM

I am trying to update to the latest Lustre packages.  We have an iSCSI
backend and when I install kernel-ib and try to log into my devices I get an
error about CRC32C being unavailable.  

 

I have this in the boot messages: 

alg: No test for crc32c (crc32c-generic)

 

Then, when I try to log into an iscsi device I get this:

connection1:0: Could not create connection due to crc32c loading error. Make
sure the crc32c module is built as a module or into the kernel

 

Has anyone else had this problem or know how to get crc32c working?  

 

Thanks,

  Dan Kulinski

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I have successfully used Lustre with iSCSI, however never by using together with
IB.


jab



________________________________
From: lustre-discuss-bounces at lists.lustre.org [mailto:lustre-discuss-bounces
at lists.lustre.org] On Behalf Of Daniel Kulinski
Sent: Monday, August 31, 2009 10:57 AM
To: lustre-discuss at lists.lustre.org
Subject: [Lustre-discuss] CRC32C not usable for ISCSI in IB RPM

I am trying to update to the latest Lustre packages.  We have an iSCSI backend
and when I install kernel-ib and try to log into my devices I get an error about
CRC32C being unavailable.

I have this in the boot messages:
alg: No test for crc32c (crc32c-generic)

Then, when I try to log into an iscsi device I get this:
connection1:0: Could not create connection due to crc32c loading error. Make
sure the crc32c module is built as a module or into the kernel

Has anyone else had this problem or know how to get crc32c working?

Thanks,
  Dan Kulinski
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On Mon, 2009-08-31 at 11:56 -0600, Daniel Kulinski
wrote:
> I am trying to update to the latest Lustre packages.  We have an iSCSI
> backend and when I install kernel-ib and try to log into my devices I
> get an error about CRC32C being unavailable.  
Well, to be completely honest, iSCSI is not really one of our target
(NPI) storage technologies and as such, it doesn''t get tested.

But this is not the first report of this crc32c problem.

On last report I checked our .config and we do have it enabled in the
kernel.  Can you check if the Lustre kernel you installed has a
crc32c.ko module?  If so, if you do
"insmod /lib/modules/$kernver/.../crc32c.ko, does it load?  If you get
an error, please paste check dmesg and see if any errors were reported
as a result of trying to load it.  If so, please paste them here.  Or
better yet, open a bug about all of this.

b.


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