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

Wed Jun 22 12:43:03 PDT 2016

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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