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FirstBurstLength = 65536
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DefaultTime2Retain = 0
MaxOutstandingR2T = 32
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www.odbms.org/download/vmw-vfabric-gemFire-best-practices-guide.pdf
www.vmware.com/files/pdf/techpaper/VMW-Tuning-Latency-Sensitive-Workloads.pdf
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[root@nas ~]$ cat /etc/sysctl.d/ixgbe.conf net.ipv4.tcp_sack = 0 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_rmem = 10000000 10000000 10000000 net.ipv4.tcp_wmem = 10000000 10000000 10000000 net.ipv4.tcp_mem = 10000000 10000000 10000000 net.core.rmem_max = 524287 net.core.wmem_max = 524287 net.core.rmem_default = 524287 net.core.wmem_default = 524287 net.core.optmem_max = 524287 net.core.netdev_max_backlog = 300000
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fedoraproject.org/wiki/Building_a_custom_kernel/en
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[mockbuild@nas ~]$ su -c 'yum install yum-utils rpmdevtools' [mockbuild@nas ~]$ rpmdev-setuptree [mockbuild@nas ~]$ yumdownloader --source kernel [mockbuild@nas ~]$ su -c 'yum-builddep kernel-3.10.10-200.fc19.src.rpm' [mockbuild@nas ~]$ rpm -Uvh kernel-3.10.10-200.fc19.src.rpm [mockbuild@nas ~]$ cd ~/rpmbuild/SPECS [mockbuild@nas ~]$ rpmbuild -bp --target=`uname -m` kernel.spec
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[mockbuild@nas ~]$ svn co https://scst.svn.sourceforge.net/svnroot/scst/trunk scst-svn
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[mockbuild@nas ~]$ cp scst-svn/iscsi-scst/kernel/patches/put_page_callback-3.10.patch ~/rpmbuild/SOURCES/ [mockbuild@nas ~]$ cp scst-svn/scst/kernel/scst_exec_req_fifo-3.10.patch ~/rpmbuild/SOURCES/
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[mockbuild@nas ~]$ vim ~/rpmbuild/SOURCES/config-generic ... CONFIG_TCP_ZERO_COPY_TRANSFER_COMPLETION_NOTIFICATION=y ...
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[mockbuild@nas ~]$ cd ~/rpmbuild/SPECS [mockbuild@nas ~]$ vim kernel.spec
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%define buildid .scst
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Patch25091: put_page_callback-3.10.patch Patch25092: scst_exec_req_fifo-3.10.patch
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ApplyPatch put_page_callback-3.10.patch ApplyPatch scst_exec_req_fifo-3.10.patch
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[mockbuild@nas ~]$ rpmbuild -bb --with baseonly --with firmware --without debuginfo --target=`uname -m` kernel.spec
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[mockbuild@nas ~]$ cd ~/rpmbuild/RPMS/x86_64/ [mockbuild@nas ~]$ su -c 'rpm -ivh kernel-firmware-3.10.10-200.scst.fc19.x86_64.rpm kernel-3.10.10-200.scst.fc19.x86_64.rpm kernel-devel-3.10.10-200.scst.fc19.x86_64.rpm kernel-headers-3.10.10-200.scst.fc19.x86_64.rpm'
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[root@nas ~]$ make scst scst_install iscsi iscsi_install scstadm scstadm_install
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[root@nas ~]$ systemctl enable "scst.service"
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[root@nas ~]$ cat /etc/scst.conf HANDLER vdisk_fileio { DEVICE mail { filename /dev/mapper/mail nv_cache 1 } DEVICE cloud { filename /dev/sdb3 nv_cache 1 } DEVICE vmstore { filename /dev/sdb4 nv_cache 1 } } TARGET_DRIVER iscsi { enabled 1 TARGET iqn.2013-09.local.nas:raid10-ssdcache { LUN 0 mail LUN 1 cloud LUN 2 vmstore enabled 1 } }
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[root@nas ~]$ cat /etc/initiators.allow ALL 10.0.0.0/24 [root@nas ~]$ cat /etc/initiators.deny ALL ALL
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[root@nas ~]$ /etc/init.d/scst start
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