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Thanks ,
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            Found the problem.   My kernel was auto-updated though yum.
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Thanks and regards,
<br/>Vaibhav 
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On June 29, 2018 at 11:31 AM Andreas Dilger <adilger@whamcloud.com> wrote:
<br/>> On Jun 28, 2018, at 22:44, vaibhav pol <vaibhavp@cdac.in> wrote:
<br/>> >
<br/>> > Hi,
<br/>> >
<br/>> > I am using the precompiled rpms from site (https://downloads.whamcloud.com/public/lustre/lustre-2.11.0/el7.4.1708/).
<br/>> > Modprobe is not able to find the lnet module . Tried to insert using insmod.
<br/>> > Following is the error message.
<br/>> >
<br/>> >
<br/>> >
<br/>> > cfs_array_alloc (err 0)
<br/>> > cfs_get_random_bytes (err 0)
<br/>> > cfs_expr_list_free_list (err 0)
<br/>> > libcfs_register_ioctl (err 0)
<br/>> > :
<br/>> > :
<br/>>
<br/>> This means that the libcfs module is not loaded. This should be loaded
<br/>> on demand as needed. That implies that "modprobe -ae" is not being run after
<br/>> module installation, or that the modules are being installed in a directory
<br/>> that does not match your kernel version.
<br/>>
<br/>> If you run "rpm -qi kmod-lustre" (or "rpm -qi kmod-lustre-client" if on
<br/>> the client) it will report which kernel the modules were built for. This
<br/>> is also stored in every module, and can be seen with "modinfo lnet" and
<br/>> "modinfo libcfs" in the "verinfo" field. This should match the currently
<br/>> running kernel version reported by "uname -r".
<br/>>
<br/>> Cheers, Andreas
<br/>>
<br/>> > On June 29, 2018 at 9:36 AM Andreas Dilger <adilger@whamcloud.com> wrote:
<br/>> > > It would be useful to include the actual error messages, in particular
<br/>> > > which module symbols it is complaining about.
<br/>> > >
<br/>> > > Cheers, Andreas
<br/>> > >
<br/>> > > On Jun 28, 2018, at 22:01, vaibhav pol <vaibhavp@cdac.in> wrote:
<br/>> > > >
<br/>> > > > Hi,
<br/>> > > > I have installed the Lustre client RPMS (Version 2.11.0) on CentOS 7.4
<br/>> > > > Whenever I tried to insert lnet module it give the unknown symbol
<br/>> > > > message and not able to load modules. Tried to insert forcefully but
<br/>> > > > that is also not working.
<br/>>
<br/>> Cheers, Andreas
<br/>> ---
<br/>> Andreas Dilger
<br/>> Principal Lustre Architect
<br/>> Whamcloud
<br/>>
<br/>>
<br/>>
<br/>>
<br/>>
<br/>>
<br/>>
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