11:22 p.m.
Hi,
is there any chance I can compile Lustre client 2.4.3 on Ubuntu 14.04
Trusty or am I fighting with the wind?
Thanks.
--
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Specialiste sénior en systèmes d'exploitation | Senior OS specialist
Environnement Canada | Environment Canada
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12:12 a.m.
On Fri, Aug 22, 2014 at 8:00 PM, Simmons, James A. <simmonsja(a)ornl.gov>
wrote:
>is there any chance I can compile Lustre client 2.4.3 on Ubuntu
14.04
>Trusty or am I fighting with the wind?
If the kernel is newer than 3.10 then no. You will need a 2.6 client in
that case.
Are you sure?
We are using a 2.4.3 client on kernel 3.14 (self built kernel) and looking
to use kernel 3.16.x + lustre 2.5.x
All of this is on Debian _clients_ for servers we are using CentOS 6.x with
lustre rpms
HTH,
Eli
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7:06 a.m.
On Fri, Aug 22, 2014 at 8:00 PM, Simmons, James A.
<simmonsja@ornl.gov<mailto:simmonsja@ornl.gov>> wrote:
>is there any chance I can compile Lustre client 2.4.3 on Ubuntu 14.04
>Trusty or am I fighting with the wind?
If the kernel is newer than 3.10 then no. You will need a 2.6 client in that case.
Are you sure?
We are using a 2.4.3 client on kernel 3.14 (self built kernel) and looking to use kernel
3.16.x + lustre 2.5.x
Yes I’m sure. In the linux kernel at version 3.10 they changed it so that all proc file
system entries use seq_files.
I did all the porting so we could build lustre with 3.10+ kernels but that work did not
get merged until 2.6. Once you
Go to 3.16 you will see lots of problems in the llite layer which I haven’t address yet.
Now you might be avoiding all
This by using the lustre client that is upstream.
8:59 p.m.
> On Fri, Aug 22, 2014 at 8:00 PM, Simmons, James A.
<simmonsja@ornl.gov<mailto:simmonsja@ornl.gov>> wrote:
>> is there any chance I can compile Lustre client 2.4.3 on Ubuntu 14.04
>> Trusty or am I fighting with the wind?
> If the kernel is newer than 3.10 then no. You will need a 2.6 client in that case.
...or you backport the patches for the support of the latest kernels.
Trusty comes with a 3.13 based kernel, and depending on how much the
Ubuntu maintainers already have backported, you might have to look at
the support for 3.14 as well.
A good starting point would be to look at LU-3675, LU-3974, LU-4416,
LU-4993, and the related issues cross-linked there.
If your aim is to build the client only, you will be able to reduce the
patch set to a subset of code which is needed by the client, but
admittedly, given the number of cross-linked issues this looks like
really a lot of work.
Using the 2.6 client would probably much easier. However,
https://wiki.hpdd.intel.com/display/PUB/Lustre+2.6+Scope+Statement
guarantees interoperability only with the latest 2.5.x release. On the
other hand, it has often been said that other combinations may work but
simply haven't been tested systematically.
But wait, doesn't the linux kernel ship with a lustre client since 3.11?
Does anyone have experiences with that one?
3:57 a.m.
On Tue, Aug 26, 2014 at 1:59 PM, Martin Hecht <hecht(a)hlrs.de> wrote:
>> On Fri, Aug 22, 2014 at 8:00 PM, Simmons, James A. <simmonsja(a)ornl.gov
<mailto:simmonsja@ornl.gov>> wrote:
>>> is there any chance I can compile Lustre client 2.4.3 on Ubuntu 14.04
>>> Trusty or am I fighting with the wind?
>> If the kernel is newer than 3.10 then no. You will need a 2.6 client in
that case.
>
...or you backport the patches for the support of the latest kernels.
Trusty comes with a 3.13 based kernel, and depending on how much the
Ubuntu maintainers already have backported, you might have to look at
the support for 3.14 as well.
A good starting point would be to look at LU-3675, LU-3974, LU-4416,
LU-4993, and the related issues cross-linked there.
If your aim is to build the client only, you will be able to reduce the
patch set to a subset of code which is needed by the client, but
admittedly, given the number of cross-linked issues this looks like
really a lot of work.
Using the 2.6 client would probably much easier. However,
https://wiki.hpdd.intel.com/display/PUB/Lustre+2.6+Scope+Statement
guarantees interoperability only with the latest 2.5.x release. On the
other hand, it has often been said that other combinations may work but
simply haven't been tested systematically.
But wait, doesn't the linux kernel ship with a lustre client since 3.11?
Does anyone have experiences with that one?
As said above we use the linux kernel staging lustre fs support, compile
the binaries etc. (Currently lustre 2.4.3 binaries + linux 3.14.3, today
3.16 was compiled and we may start trying that on test nodes tomorrow)
Now we haven't done anything to seriously tax lustre so far just some
simple read/write traffic from multiple clients so maybe that is why no
real issues have started popping up yet.
However if I understand James correctly our setup should not work? Or is
that only if we were to try to compile kernel modules based on the code in
lustre 2.5.x?
Thanks,
Eli
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participants (4)
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E.S. Rosenberg -
Martin Hecht -
Patrice Hamelin -
Simmons, James A.