DevTech101

DevTech101

oel-6

How To Turn Off rx/tx Chksums in Xsigo / Linux Driver

Modifying rx/tx Chksums in Linux Driver Using the Xsigo Driver To modify chksum offload to off on Linux To turn off on the fly – but wont stay after a reboot Firs, remove the module by running run rmmod xve Next, add back the module by running modprobe xve xs_seq_file=1 xve_no_tx_checksum_offload=1 modinfo xve For permanent …

How To Turn Off rx/tx Chksums in Xsigo / Linux Driver Read More »

Allow 32bit applications on 64bit RedHat/OEL

If you don't install 32bit OS librrey's you might get errors like this. perl  perl: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped To fix this issue you will need to install at miniumem the system 32bit libryrys yum install glibc.i686

Linux – Using systool To Easily Get HBA Info

Getting HBA detail information in Linux by using systool Lets get into the details with a few worked examples. First of, a command to show basic Fiber Channel info (actually quite useful when you’re getting the hang of what’s on a system). systool -c fc_host -v which, on my test system (unconnected to a SAN …

Linux – Using systool To Easily Get HBA Info Read More »

Xsigo OEL linux driver installtion

First check if the PCI card is visble to the system lspci |grep Mellanox 06:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3] 09:00.0 InfiniBand: Mellanox Technologies MT26428 [ConnectX VPI PCIe 2.0 5GT/s – IB QDR / 10GigE] (rev b0) Then install the Xsigo burn utiltiy rpm ivh xsigo-hca-firmware-4.0.3.r177.XGBOOT-1.i386.rpm Then make sure to burin the Xsigo …

Xsigo OEL linux driver installtion Read More »

Configuring LACP bonding on RedHat, CentOS

Setting up LACP on Redhat linux Modify /etc/modprobe.conf (Not needed as of RHEL and OEL 6+) cat /etc/modprobe.conf alias eth0 igb alias eth1 igb alias bond0 bonding options bond0 mode=4 miimon=100 lacp_rate=1 xmit_hash_policy=layer3+4 alias scsi_hostadapter aacraid alias scsi_hostadapter1 ahci In order for the kernel bonding module to come up when the machine boots, create a …

Configuring LACP bonding on RedHat, CentOS Read More »