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

Patrick Farrell paf at cray.com
Wed Jun 22 11:17:15 PDT 2016


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
>
>
>
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