On Fri, 4 Dec 2015 18:08:50 -0500 Chris Hunter <[email protected]> wrote:
> Hi Ray, > > I'll throw my 0.02 into the ring: > > There are known issues with the Truescale kernel driver in > redhat/centos/scilinux 6.6. You should try kernel 2.6.32-504.23.4 or > newer. Some details of the bug are in LU-6698 and RHSA-2015-1081. Good summary of the problems except that IB was generally broken not just for Truescale (multicast stuff in ipoib -> islands of connectivity). This was however a different bug compared to the ib_qib driver bug... /Peter K > Further, lustre 2.7+ now applies performance tuning parameters when > installed with the ko2iblnd kernel driver (LU-6735). The tuning > parameters are likely incompatible with older infiniband HCA > adapters. Our experience is they don't work for Truescale IB adapters. > > If you are running lustre 2.5 servers and lustre 2.7+ clients these > tuning parameters likely will prevent your clients from mounting. > > Fortunately you can disable the tuning parameters by modifying the > ko2iblnd modprobe config file. On our RHEL6 clients, we removed the > line "install ko2iblnd /usr/sbin/ko2iblnd-probe" from file > /etc/modprobe.d/ko2iblnd.conf > > If you are running 2.7+ servers and 2.7+ clients then I believe this > is not an issue (LU-3322). > > regards, > chris hunter > [email protected] > > > > > > Le 03-12-2015 16:13, Ray Muno a ?crit : > >> I am trying to set up a test deployment of Lustre 2.7. > >> > >> I pulled RPMS from > >> https://urldefense.proofpoint.com/v2/url?u=http-3A__lustre.org_download_&d=AwICAg&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=d_G2h_sZYG4xtHMeKo8QgjDmOcMVdQvYgM-5Dri1AOY&m=rDHVyPCaAhbdHPi5Gl5kTqo8s7e7Z84-RWqvgtBRrWI&s=3CPtgQCox02zqp-KhoiiSt5NJV0SoIiSLCIqRQHONdk&e= > >> and installed them on a set of server running Scientific Linux 6.6 > >> which seems to be a proper OS for deployment. Everything installs > >> and I can format the filesystems on the MDS (1) and OSS (2) > >> servers. When I try and mount the OST files systems, I get > >> communication errors. I can "lctl ping" the servers from each > >> other, but cannot establish communication between the MDS and OSS. > >> > >> The installation is on servers connected over Infiniband (Qlogic > >> DDR 4X). > > _______________________________________________ > lustre-discuss mailing list > [email protected] > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
