[lustre-discuss] MDS Config Help: Are the lustre modules loaded?

Wed Jun 22 12:58:29 PDT 2016

Ah, now that I look more closely - that warning may not be fatal. Did 
you get a failure, or just the warning?

(The guide looks good)
On 06/22/2016 02:52 PM, Sangeetha Banavathi Srinivasa wrote:
> Patrick,
>
> I am following the steps on 
> http://lustre.ornl.gov/lustre101-courses/content/C1/L3/LustreBasicInstall.pdf
> Except that I am installing 2.8 instead of 2.7.
> Could you recommend any other article/blog that I can follow in order 
> to successfully install lustre.
>
>> On Jun 22, 2016, at 3:43 PM, Patrick Farrell <paf at cray.com 
>> <mailto:paf at cray.com>> wrote:
>>
>> Hm.  It sounds like your RPMs are not installed correctly, but I 
>> vaguely recall something about a packaging issue with the Lustre 2.8 
>> release RPMs.
>>
>> Perhaps someone else on the list can help further.
>> - Patrick
>>
>> On 06/22/2016 02:40 PM, Sangeetha Banavathi Srinivasa wrote:
>>> I have done that already and re-booted my system.
>>> But I still get the error.
>>>
>>> When I did run that command, I got the below error:
>>> WARNING: Can't read module 
>>> /lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/weak-updates/kernel/fs/lustre/llog_test.ko: 
>>> No such file or directory
>>> egrep: 
>>> /lib/modules/2.6.32-573.12.1.el6_lustre.x86_64//weak-updates/kernel/fs/lustre/llog_test.ko: 
>>> No such file or directory
>>>
>>>
>>>> On Jun 22, 2016, at 3:38 PM, Patrick Farrell <paf at cray.com 
>>>> <mailto:paf at cray.com>> wrote:
>>>>
>>>> Well, that's not patching the kernel.  It's making the initrd and 
>>>> and updating the boot stuff so your system will boot that kernel.
>>>>
>>>> But, yes, that should be what you need to do.
>>>>
>>>> - Patrick
>>>> On 06/22/2016 02:36 PM, Sangeetha Banavathi Srinivasa wrote:
>>>>> When you say install the associated kernel do you mean patching 
>>>>> the kernel like below
>>>>> sudo /sbin/new-kernel-pkg --package kernel --mkinitrd  --dracut 
>>>>> --depmod --install 2.6.32-573.12.1.el6_lustre.x86_64
>>>>>
>>>>> I have already done rpm -ivh 
>>>>> kernel-2.6.32-573.12.1.el6_lustre.x86_64.rpm
>>>>>
>>>>>
>>>>>> On Jun 22, 2016, at 2:51 PM, Patrick Farrell <paf at cray.com 
>>>>>> <mailto:paf at cray.com>> wrote:
>>>>>>
>>>>>> The kernel version is found with uname -r or cat /proc/version.
>>>>>>
>>>>>> That needs to match the kernel version in the Lustre RPMs. (The 
>>>>>> version string is the 2.6.32-573.12.1.el6_lustre) part.
>>>>>>
>>>>>> In fact, it looks like you've got Lustre server RPMs, given the 
>>>>>> _lustre in the name of the kernel.  That means you need to 
>>>>>> install the associated kernel.
>>>>>>
>>>>>> - Patrick
>>>>>>
>>>>>> On 06/22/2016 01:43 PM, Sangeetha Banavathi Srinivasa wrote:
>>>>>>> Patrick,
>>>>>>>
>>>>>>> The CentOS version on the machines is 6.8
>>>>>>>
>>>>>>> [lustre at hulk2 ~]$ cat /etc/redhat-release
>>>>>>> CentOS release 6.8 (Final)
>>>>>>>
>>>>>>>
>>>>>>> The kernel version that I have installed is what I found along 
>>>>>>> with the lustre RPMs
>>>>>>> [lustre at amaranth3 ~]$ uname -r
>>>>>>> 2.6.32-573.12.1.el6_lustre.x86_64
>>>>>>>
>>>>>>>
>>>>>>> And I am trying to install lustre 2.8.
>>>>>>>
>>>>>>> Should the CentOS release version be 2.7??
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> On Jun 22, 2016, at 2:17 PM, Patrick Farrell <paf at cray.com 
>>>>>>>> <mailto:paf at cray.com>> wrote:
>>>>>>>>
>>>>>>>> Well, it says to check dmesg...  Though that will just list the 
>>>>>>>> symbols. In general, this usually means you've got a mismatch 
>>>>>>>> between the version of the kernel (or OFED) Lustre is built 
>>>>>>>> against and your version of either the kernel or OFED.  Given 
>>>>>>>> the number and locations of the mismatches, I'm guessing it's 
>>>>>>>> the kernel.
>>>>>>>>
>>>>>>>> So, compare your kernel version and your Lustre RPMs.
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> - Patrick
>>>>>>>> On 06/22/2016 12:47 PM, Sangeetha Banavathi Srinivasa wrote:
>>>>>>>>> When I try modprobe lustre, I see the below errors:
>>>>>>>>> [*05:44:03*] *root at hulk2**lustre #*modprobe lustre
>>>>>>>>> WARNING: Error inserting obdclass 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/obdclass.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> WARNING: Error inserting ptlrpc 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/ptlrpc.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> WARNING: Error inserting fld 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/fld.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> WARNING: Error inserting lmv 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/lmv.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> WARNING: Error inserting fid 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/fid.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> WARNING: Error inserting mdc 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/mdc.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> WARNING: Error inserting lov 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/lov.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>> FATAL: Error inserting lustre 
>>>>>>>>> (/lib/modules/2.6.32-573.12.1.el6_lustre.x86_64/extra/kernel/fs/lustre/lustre.ko): 
>>>>>>>>> Unknown symbol in module, or unknown parameter (see dmesg)
>>>>>>>>>
>>>>>>>>>> On Jun 22, 2016, at 1:44 PM, Sangeetha Banavathi Srinivasa 
>>>>>>>>>> <bsangee at vt.edu <mailto:bsangee at vt.edu>> wrote:
>>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> Below are the steps I executed in configuring MDS.
>>>>>>>>>>
>>>>>>>>>> 1. mkfs.lustre --fsname lustre --mdt --mgs /dev/vg00/mdt
>>>>>>>>>>
>>>>>>>>>> 2. mkdir /mdt
>>>>>>>>>>
>>>>>>>>>> 3. mount -t lustre /dev/vg00/mdt /mdt
>>>>>>>>>>
>>>>>>>>>> I see the below error after step 3:
>>>>>>>>>>
>>>>>>>>>> mount.lustre: mount /dev/mapper/vg00-mdt1 at /mdt failed: No 
>>>>>>>>>> such device
>>>>>>>>>> Are the lustre modules loaded?
>>>>>>>>>> Check /etc/modprobe.conf and /proc/filesystems
>>>>>>>>>> [root at amaranth3 lustre]#
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> I tried modprobe lustre and retried mounting but it resulted 
>>>>>>>>>> in the same error.  Any help will be appreciated.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> For your info, the lustre modules that I have installed are:
>>>>>>>>>> [root at amaranth3 lustre]# rpm -qa |grep lustre
>>>>>>>>>> lustre-osd-ldiskfs-mount-2.8.0-2.6.32_573.12.1.el6_lustre.x86_64.x86_64
>>>>>>>>>> lustre-tests-2.8.0-2.6.32_573.12.1.el6_lustre.x86_64.x86_64
>>>>>>>>>> lustre-modules-2.8.0-2.6.32_573.12.1.el6_lustre.x86_64.x86_64
>>>>>>>>>> lustre-osd-ldiskfs-2.8.0-2.6.32_573.12.1.el6_lustre.x86_64.x86_64
>>>>>>>>>> lustre-iokit-2.8.0-2.6.32_573.12.1.el6_lustre.x86_64.x86_64
>>>>>>>>>> kernel-2.6.32-573.12.1.el6_lustre.x86_64
>>>>>>>>>> lustre-2.8.0-2.6.32_573.12.1.el6_lustre.x86_64.x86_64
>>>>>>>>>>
>>>>>>>>>> [root at amaranth3 lustre]# rpm -qa |grep e2fs
>>>>>>>>>> e2fsprogs-libs-1.42.13.wc5-7.el6.x86_64
>>>>>>>>>> e2fsprogs-1.42.13.wc5-7.el6.x86_64
>>>>>>>>>>
>>>>>>>>>> [root at amaranth3 lustre]# rpm -qa |grep libss
>>>>>>>>>> libss-1.42.13.wc5-7.el6.x86_64
>>>>>>>>>>
>>>>>>>>>> root at amaranth3 lustre]# rpm -qa |grep libcom
>>>>>>>>>> libcom_err-1.42.13.wc5-7.el6.x86_64
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> [root at amaranth3 lustre]# uname -a
>>>>>>>>>> Linux amaranth3 2.6.32-573.12.1.el6_lustre.x86_64 #1 SMP Tue 
>>>>>>>>>> Feb 23 22:41:09 PST 2016 x86_64 x86_64 x86_64 GNU/Linux
>>>>>>>>>> [root at amaranth3 lustre]#
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Thanks,
>>>>>>>>>> Sangeetha
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> lustre-discuss mailing list
>>>>>>>>> lustre-discuss at lists.lustre.org
>>>>>>>>> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> lustre-discuss mailing list
>>>>>>>> lustre-discuss at lists.lustre.org 
>>>>>>>> <mailto:lustre-discuss at lists.lustre.org>
>>>>>>>> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>

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