LINUX Clouds

rcnfsserver restart more info :  http://doc.opensuse.org/products/draft/SLES/SLES-admin_sd_draft/cha.nfs.html

virsh create rhel.xml sometime rhel.xml file not showing in  virsh list --all so go to directory where xml file is available & run the above command. 

Steps to create Bonding: /etc/init.d/NetworkManager stop chkconfig NetworkManager off cat /etc/modprobe.d/bonding.conf alias bond0 bonding options bond0 mode=1 miimon=1000 cat /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE=bond0 IPADDR=10.0.250.11 NETMASK=255.255.0.0 USERCTL=no BOOTPROTO=none ONBOOT=yes BONDING_OPTS=mode=0 miimon=1000 cat /etc/sysconfig/network-scripts/ifcfg-eth2 DEVICE=eth2 HWADDR=E4:1F:13:40:E6:D0 TYPE=Ethernet #UUID=3c7adca2-c92e-4020-80d6-3e1fbc565c12 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none MASTER=bond0 SLAVE=yes USERCTL=no cat /etc/sysconfig/network-scripts/ifcfg-eth3 DEVICE=eth3 HWADDR=E4:1F:13:40:E6:D2 TYPE=Ethernet #UUID=dbe13f39-8928-401e-acb9-1323d5cfd677 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none MASTER=bond0 SLAVE=yes USERCTL=no cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) Bonding Mode: load balancing (round-rob...

RHEL bonding supports 7 possible “modes” for bonded interfaces. These modes determine the way in which traffic sent out of the bonded interface is actually dispersed over the real interfaces. Modes 0, 1, and 2 are by far the most commonly used among them. Mode 0 (balance-rr) This mode transmits packets in a sequential order from the first available slave through the last. If two real interfaces are slaves in the bond and two packets arrive destined out of the bonded interface the first will be transmitted on the first slave and the second frame will be transmitted on the second slave. The third packet will be sent on the first and so on. This provides load balancing and fault tolerance. Mode 1 (active-backup) This mode places one of the interfaces into a backup state and will only make it active if the link is lost by the active interface. Only one slave in the bond is active at an instance of time. A different slave becomes active only when the active slave fails. This mode pro...

awk '{ print tolower($0) }' yum_update.bkp >yum_update.bkp_lower

virsh list --all  Id Name                 State ----------------------------------   6 vxyz-APO8K2-1342A-1019-0006Z_nawer_10.0.251.171 paused #virsh resume vxyz-APO8K2-1342A-1019-0006Z_nawer_10.0.251.171

http://hal.archives-ouvertes.fr/docs/00/78/90/86/PDF/a_survey_of_dfs.pdf Analysis of Six Distributed File Systems Benjamin Depardon benjamin.depardon@sysfera.com SysFera Cyril S eguin cyril.seguin@u-picardie.fr Laboratoire MIS, Universit e de Picardie Jules Verne Gael Le Mahec gael.le.mahec@u-picardie.fr Laboratoire MIS, Universit e de Picardie Jules Verne February 15, 2013 hal-00789086, version 1 - 15 Feb 2013 Contents 1 De nitions and related work 2 1.1 Distributed le system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Scalable architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Transparency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3.1 Naming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3.2 Data access Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3.3 Caching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3.4 Fault d...