Editing UfoClusterStorage

= Fast Storage Server = * Forwards fast raw devices using iSER protocol * Read-ahead of the raid should be adjusted for the optimum performance {{{ blockdev --setra 65536 /dev/sd# }}} * Package tgt * No iSER support in OpenSuSE RPMS * Recompile adding ''ISCSI_RDMA=1'' parameter to make command * /etc/tgt/targets.conf {{{ default-driver iser <target iqn.ipepdvcompute1.fast> <direct-store /dev/disk/by-partlabel/fast> bs-type aio MaxRecvDataSegmentLength 2097152 MaxXmitDataSegmentLength 2097152 FirstBurstLength 8388608 MaxBurstLength 8388608 block-size 512 write-cache off </direct-strore> </target> }}} = Camera Computer = * openiscsi package, ''iscsid'' should be started on boot * Server node configuration {{{ iscsi_discovery 192.168.11.1 -t iser -f iscsi_discovery 192.168.11.3 -t iser -f }}} * It will populate 2 extra ''/dev/sd?'' nodes * Create softraid 0 for optimal performance {{{ mdadm --create /dev/md3 -n 2 -l 0 /dev/disk/by-path/pci-0000\:06\:00.0-ip-192.168.11.1\:3260-iscsi-iqn.ipepdvcompute1.fast-lun-1 /dev/disk/by-path/pci-0000\:06\:00.0-ip-192.168.11.3\:3260-iscsi-iqn.ipekatrinadei.fast-lun-1 }}} * Format it with XFS {{{ mkfs -t xfs /dev/md3 }}} * fstab entry {{{ /dev/md3 /mnt/server xfs noauto,noatime,allocsize=1GiB,largeio,swalloc,delaylog,nobarrier 0 0 }}}