[lustre-discuss] Client 2.12.5 on 4.18.0-193.6.3.el8_2.x86_64 does not load

[Andreas Dilger]

On Jun 22, 2020, at 6:02 AM, Torsten Harenberg <harenberg at physik.uni-wuppertal.de> wrote:
> 
> Dear all,
> 
> due to the attacks to HPC centers, we were advised to update the kernels
> to the newest version available.
> 
> It seems that the Lustre 2.12.5 client does not load on the very recent
> CentOS 8 kernel anymore:
> 
> [root at arc6 yum.repos.d]# rpm -qa | grep lustre
> lustre-client-2.12.5-1.el8.x86_64
> lustre-client-dkms-2.12.5-1.el8.noarch
> 
> [root at arc6 yum.repos.d]# uname -a
> Linux arc6.pleiades.uni-wuppertal.de 4.18.0-193.6.3.el8_2.x86_64 #1 SMP
> Wed Jun 10 11:09:32 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
> 
> [root at arc6 yum.repos.d]# modprobe -a lustre
> modprobe: ERROR: could not insert 'lustre': Invalid argument
> 
> [root at arc6 yum.repos.d]# dmesg | tail
> [ 1157.583204] obdclass: disagrees about version of symbol
> cfs_crypto_hash_init
> [ 1157.585079] obdclass: Unknown symbol cfs_crypto_hash_init (err -22)

This doesn't seem like a problem with the RHEL8 kernel, but rather a
mismatch between your kernel modules (libcfs and obdclass).  Maybe
you didn't remove the old modules before trying to install the new ones?
The "lustre_rmmod" command should do this for you.

Cheers, Andreas

> [ 1157.586776] obdclass: disagrees about version of symbol
> cfs_crypto_hash_update_page
> [ 1157.588807] obdclass: Unknown symbol cfs_crypto_hash_update_page (err
> -22)
> [ 1456.283749] obdclass: disagrees about version of symbol
> cfs_crypto_hash_final
> [ 1456.287874] obdclass: Unknown symbol cfs_crypto_hash_final (err -22)
> [ 1456.290118] obdclass: disagrees about version of symbol
> cfs_crypto_hash_init
> [ 1456.292143] obdclass: Unknown symbol cfs_crypto_hash_init (err -22)
> [ 1456.294009] obdclass: disagrees about version of symbol
> cfs_crypto_hash_update_page
> [ 1456.296121] obdclass: Unknown symbol cfs_crypto_hash_update_page (err
> -22)
> 
> 
> Complete de- and re-install does not help.
> 
> Is that known? Any advice other than downgrading the kernel again?
> 
> Thanks and kind regards
> 
>  Torsten
> 
> 
> --
> Dr. Torsten Harenberg     harenberg at physik.uni-wuppertal.de
> Bergische Universitaet
> Fakultät 4 - Physik       Tel.: +49 (0)202 439-3521
> Gaussstr. 20              Fax : +49 (0)202 439-2811
> 42097 Wuppertal
> 
> _______________________________________________
> lustre-discuss mailing list
> lustre-discuss at lists.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org


Cheers, Andreas





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