5:08 a.m.
A short answer is that we have *client* support for very recent upstream
kernels, but server support is limited to those kernels for which you
observed patch series, primarily RHEL/CentOS 6 & 7 and some SLES
versions. Supported versions are listed in the
lustre/kernel/which_patch file (and vary slightly by Lustre version),
but the newest supported anywhere is 3.10 as it exists in RHEL 7.
Trying to build the server for any other platform would be pretty tough
(since you'd have to port the patch series for the kernel itself &
ldiskfs), and it's not tested/supported, so there might be unknown issue
as well. I'd strongly caution against it for a production environment.
On 06/02/2015 01:51 PM, Sean Caron wrote:
Hi all,
I'm a little new to Lustre; my site manages a fair bit of data ...
around 10 PB ... mostly now in NFS and we'd like to investigate using
Lustre in our environment as a longer-term strategy for improved
performance, availability and so on.
However, our cluster runs entirely on Ubuntu Linux as a standard ...
we're using 12.04 LTS right now in production with a house-build
3.4.61 kernel, however, I'm doing my Lustre experiments on Ubuntu 14
with the stock 3.13 kernel, source from Ubuntu's archives, just trying
to follow the directions in Section 30 of the Lustre manual.
Now, it's just not clear to me ... it looks like most of the packages
and directions out there ... are for Red Hat ... I've been looking
through the bug tracker and I see people discussing building Lustre on
Debian or Ubuntu ... I don't know if this is just the client they are
trying to build; I see a few tickets i.e. LU-5189 ... that imply that
Lustre will run on Debian and derived platforms like Ubuntu ... but I
don't have a good source anywhere that really walks through the build
process ...
However if I go and look
at /home/build/lustre-release/lustre/kernel_patches or any of the
files there under i.e. the "series" subdirectory ... I see nothing for
Ubuntu, or Debian ... and a lot of what is there is for old 2.6.x RHEL
and SLES kernels, or much lower revisions on the 3.x kernel train for
same...
So I suppose my questions are ...
1. Is it possible to build the server-side components of Lustre on
Ubuntu 14?
b. If so, does anyone have a source on any snippets of documentation,
or a patch set, or information on how I can generate one of these
patch series for the 3.13 kernel in Ubuntu 14 LTS?
2. I assume it's at least possible to run Ubuntu 14 LTS as a Lustre
client?
b. If so, is there any source for any direction on same?
I suppose I would be willing to build the Lustre MGS/MDS and OSS
machines with Fedora if I had to but it's pretty critical to have
client support at least for Ubuntu machines ...that's possible, right?
I see some cursory description of a Debian style Lustre build process
in ticket LU-1706 but I don't see how it relates to the kernel ...
should I just ... I haven't tried to just blindly follow that process;
is that basically what I'm looking to do? There's support enough for
3.13 that ./configure will figure it out, so long as all the proper
development packages are installed?
So far I've got my Ubuntu kernel source in place; I've grabbed Lustre
from Git; I ran autogen.sh per the documentation; now I'm at the stage
where I need to patch and build the kernel and it's just not clear to
me from the Lustre documentation or anything on the Ubuntu site, or
just cursorily Googling around, what the next step is here to get the
patches in and the build done...
I have a
"/lib/modules/3.13.0-53-generic/kernel/drivers/staging/lustre/lustre/llite/lustre.ko
module sitting around on my basically stock Ubuntu 14 machine but
searching for Lustre in apt doesn't give me much back ... it looks
like there might be some nominal Lustre support in Ubuntu 14 but
unclear what version or to what degree ... hopefully someone here can
help me make sense of it all?
TIA,
Sean
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