similar to: Lustre buffer cache causes large system overhead.

Since in Linux we are mostly a debian shop we''d like to stick with debian for our calculation nodes if possible. So I wanted to ask the lustre 2.2 instructions for Debian are they more or less relevant to lustre 2.4/2.5 or am I going headlong into a tall brick wall. Also are newer clients backwards compatible with older server software? I am currently just setting up a demo environment

Hi, We run four-node Lustre 2.3, and I needed to both change hardware under MGS/MDS and reassign an OSS ip. Just the same, I added a brand new 10GE network to the system, which was the reason for MDS hardware change. I ran tunefs.lustre --writeconf as per chapter 14.4 in Lustre Manual, and everything mounts fine. Log regeneration apparently works, since it seems to do something, but

Intel??????????Whamcloud??????????Lustre???????????????Whamcloud???Lustre???????????? ????? 2012?10?30? ? 11?2? ???????? ??? ????????2? ??????A?8? ?????????????http://www.whamcloud.com/events/lustre-installation-and-administration-beijing-china/ ???????????????? The 1st Lustre Administration and Installation training in Great China area after Intel Corporation acquired Whamcloud will soon be

Whamcloud and EMC are jointly investigating how to be able to contribute the Lustre client code into the upstream Linux kernel. As a prerequisite to this, EMC is working to clean up the Lustre client code to better match the kernel coding style, and one of the anticipated major obstacles to upstream kernel submission is the heavy use of code abstraction via libcfs for portability to other

Whamcloud and EMC are jointly investigating how to be able to contribute the Lustre client code into the upstream Linux kernel. As a prerequisite to this, EMC is working to clean up the Lustre client code to better match the kernel coding style, and one of the anticipated major obstacles to upstream kernel submission is the heavy use of code abstraction via libcfs for portability to other

Hello guys, does anyone of you have problems with chown and chmod operations taking extremely long time to complete. For example chown on 200 MB folder is taking minutes. The MDS is not loaded at all. All other operations (file read and write) seem to be doing fine. Any help is greatly appreciated. _______________________________________________ Lustre-discuss mailing list

Hello, I am having trouble installing the server modules for lustre 2.1.4 and use mellanox''s OFED distribution so we may use infiniband. Would you folks look at my procedure and results below and let me know what you think? Thanks very much! The mellanox ofed installation builds and installs some kernel modules too, so I used this method to ensure OFED compiled against the correct

In hopes of improving the quality, coverage, and currency of the Lustre User Manual, I''m putting out a call to the Lustre community for contributors to this important resource. The user manual is especially important for new users to Lustre, but has fallen into some disrepair now that there is no longer a dedicated documentation writer for it. As well, there are many sections of the

In hopes of improving the quality, coverage, and currency of the Lustre User Manual, I''m putting out a call to the Lustre community for contributors to this important resource. The user manual is especially important for new users to Lustre, but has fallen into some disrepair now that there is no longer a dedicated documentation writer for it. As well, there are many sections of the

I built and installed Lustre from source. When I installed built luster-modules- RPM, I got libcfs.ko from the kernel-2.6.18-prep has no modversions (the message is posted below), so it cannot be reused for kernel. Is there any procedure I need to do during the build? There is include/config/modversion.h under patched kernel, but the file does not have any contens and its size is 0. Thanks for

Configure fails at testing for openib - anyone an idea? Thanks Michaell configure:10034: checking whether to enable OpenIB gen2 support configure:10138: cp conftest.c build && make -d modules CC=gcc -f /home/mhebenst/lustre-2.3.0/build/Makefile LUSTRE_LINUX_CONFIG=/adm in/extra/linux-2.6.32-358.2.1.el6.x86_64.crt1/.config LINUXINCLUDE= -I/usr/local/ofed/3.5/src/compat-rdma-3.5/include

Hi all, I am a grad student at Carnegie Mellon University. I had my course work in advanced storage systems in previous semester, and I am interested to work on Lustre. I prefer to take up a project that could be completed in a duration of a month or two. Since I am a novice w.r.t. my familiarity with Lustre code base, I seek your opinion to choose a project from the list:

Hi all, I used the method described below to build client rpms with the source kit lustre-1.8.5.tar.gz. There was only one error reported during the make rpms, relating to lustre-iolit-1.2-root, but the rpms were built under /usr/src/packages/RPMS/x86_64. The rpms lustre-modules, lustre and lustre-tests were then installed smoothly without any complaints. But the subsequent "modprobe

Hello, in preparation for CentOS 6.5 I was trying to build Lustre 1.8 client on CentOS 6.4 updated with 2.6.32-431 kernel. Seems like recent changes in fs.h (/usr/src/kernels/2.6.32-431.el6.x86_64/include/linux/fs.h) is causing problems. make[5]: Entering directory `/usr/src/kernels/2.6.32-431.el6.x86_64'' cc1: warnings being treated as errors

Hi, I have a query regarding Lustre Throughput Numbers with mdtest benchmark.I am running mdtest benhmark with following options :- /home/meshram/mpich2-new/mpich2-1.4/mpich2-install/bin/mpirun -np 256 -hostfile ./hostfile ./mdtest -z 3 -b 10 -I 5 -v -d /tmp/l66 where , mdtest - is the standard benchmark to test metadata operations. [ https://computing.llnl.gov/?set=code&page=sio_downloads

Hi, I have a query regarding Lustre Throughput Numbers with mdtest benchmark.I am running mdtest benhmark with following options :- /home/meshram/mpich2-new/mpich2-1.4/mpich2-install/bin/mpirun -np 256 -hostfile ./hostfile ./mdtest -z 3 -b 10 -I 5 -v -d /tmp/l66 where , mdtest - is the standard benchmark to test metadata operations. [ https://computing.llnl.gov/?set=code&page=sio_downloads

Hello, I have a production script that do read operations to a lot of small files. I read that one can gain performance boost with small files by using a loop device on top of Lustre. So a created 500 GB file striped across all of my OSTs(which are 8). I formatted the file with ext2 fs, and mounted it on a client. Just for the sake of testing a simple bash script finds all files with a given file

Hello All, I have installed and configured Lustre 1.8.4 on SuSe 11.0 and everything works fine if i run modprobe lustre and when the lustre module is getting loaded. But when the server reboots it is not getting loaded. Kindly help. Lnet is configured in /etc/modprobe.conf.local as below. options lnet networks=tcp0(eth0) accept=all For loading lustre module i tried including lustre module in

Hello Lustre Experts I am trying to solve a problem with very slow "ls" and other big amount of file operations but good overall read/write rates. We are running a small cluster of 3 OSSs with 9 OSTs, 1MDS (with SSD MDT) and currently two clients. All server nodes are centos 5.2 with lustre 1.8.1 while the clients are centos 5.4 with lustre 1.8.3. All components are networked with DDR

Hi all, Here is the situation: I have 2 nodes MDS1 , MDS2 (10.0.0.22 , 10.0.0.23) I wish to use as failover MGS, active/active MDT with zfs. I have a jbod shelf with 12 disks, seen by both nodes as das (the shelf has 2 sas ports, connected to a sas hba on each node), and I am using lustre 2.4 on centos 6.4 x64 I have created 3 zfs pools: 1. mgs: # zpool