iscsi multipath

virtual disk, such as Mpatha, the client mounts the Mpatha, as long as the underlying not two paths all fail, Mpatha has been available. Principle reference HSRP.Second, configure multi-path1. Add 192.168.2.0/24 network between VH01 and vh032, on the vh03 through the 192.168.2.0 network also found a share[Email protected] ~]# iscsiadm--mode discoverydb--type sendtargets--portal 192.168.2.1--discover[[email protected] ~]# systemctl restart iSCSI[Email

complete.Next you need to go to iSCSI Manger, where you set iSCSI target and LUNsThe interface is set up as shown belowIt is worth mentioning that in the advanced settings of target, be sure to check the Allow multiple sessions from one or more ISCSI initiators, this is to configure MPIO multipath access later, or onl

installation operating systemConfigure exactly the same two servers and install the same version of the Linux operating system. The system CD or image file is retained.I'm OEL7.5 here. The system directory size is the same. The system image file corresponding to the OEL7.5 is placed on the server for subsequent configuration of local yum.1.2 Oracle installation media Oracle 18.3 version 2 ZIP package (total size 9g+, note space):Linux. X64_180000_grid_home.zip md5:cd42d137fd2a2eeb4e911e8029cc82

volume. Multipath devices (mpath) At the moment, multipathing support is limited to assigning existing devices to the guests. Volume creation or processing ing multipathing fromlibvirtIs not supported. Network Exported Directory (netfs) Specify a network directory to be used in the same way as a File System Directory Pool (a directory for hosting image files ). The only difference to using a file system directory is the fact thatli

mappings in a virtual environment can be used to create a direct connection to a virtual machine. With the VMware RDM feature, applications with high I/O performance overhead can achieve significant performance gains because RDM can invoke commands directly from existing SAN environments. This allows the user to load an existing LUN. If you are using Exchange Server and it is already running on a SAN, when you virtualize the Exchange server, you run a VMware converter, a Microsoft converter, or

-permissions.rulesenv{dm_name}== "DG ", owner:=" grid ", group:=" Asmadmin ", mode:=" 0660 ", symlink+=" iscsi/oraasm-$env {DM_NAME} " env{dm_name}== "OCR", owner:= "grid", group:= "Asmadmin", mode:= "0660", symlink+= "iscsi/ oraasm-$env {Dm_name} "Reprint a post: About RHEL6 Install RAC permissions binding issue Red Hat Enterprise Linux 6.0 begins to discard the mode, UID, and GID parameters in the/etc/mul

purchase the appropriate vsphere license.Third, server planningIn the experimental environment, three PowerEdge R720 servers and two Dell PowerEdge R420 were used, the first of which were used as ESXi hosts, and the latter for data backup (VDP, also ESXi host) and iSCSI soft Storage (CentOS iSCSI virtual hard disk) host.The 3 R720 (ESXI-MGT, esxi01, esxi02) configurations for the Exsi compute node host are

-lv_home/home ext4 defaults 1 2 /Dev/mapper/vg_sspdb1-lv_swap swap defaults 0 0 Tmpfs/dev/shm tmpfs defaults 0 0 Devpts/dev/pts devpts gid = 5, mode = 620 0 0 Sysfs/sys sysfs defaults 0 0 Proc/proc defaults 0 0 /Dev/mapper/ssp-data/opt/sspdata ext4 _ netdev 0 0 From the above analysis, we found that the ssp-data type is _ netdev, And the name is network-related. We are continuing to query. Check the iscsi storage, indicating that storage is enabled d

:3600a098038303742695d4933306e7a51# # Sdcb:3600a098038303742695d4933306e7a51# # Sdcc:3600a098038303742695d4933306e7a51By looking at it, we find that the last one is the latest addition. --Edit multipathing[Email protected] scsi_host]# vi/etc/multipath.conf ......................... multipath {Wwid 3600a098038303742665d49316b783278Alias Ocrdisk1}multipath {Wwid 3600a098038303742665d49316b783279Alias Ocrdisk2

The storage design leveraged by the host server architecture has a significant impact on host and guest performance. Storage performance is a complex mix of drives, interfaces, controllers, caches, protocols, Sans, HBAs, drivers, and operating system considerations. Typically, the overall performance of a storage architecture is measured by maximum throughput, maximum IO operations per second (IOPS), and latency or response time. Although these three factors are important, IOPS and latency are m

/Dev/mapper/vg_sspdb1-lv_home/home ext4 defaults 1 2 /Dev/mapper/vg_sspdb1-lv_swap swap defaults 0 0 Tmpfs/dev/shm tmpfs defaults 0 0 Devpts/dev/pts devpts gid = 5, mode = 620 0 0 Sysfs/sys sysfs defaults 0 0 Proc/proc defaults 0 0 /Dev/mapper/ssp-data/opt/sspdata ext4 _ netdev 0 0 From the above analysis, we found that the ssp-data type is _ netdev, And the name is network-related. We are continuing to query. Check the iscsi storage, indicating tha

features: Similar to/dev/zero, but he is a block device, can not write things, generally used for testing, to create a large file system for testing. For example, to test the creation of 10T size devices with ext3 to format #export hugesize=$[100 * (2**40)/512] 100T sector number 2**40 2 40 #echo "0 $HUGESIZE Zero" | Dmsetup Create Zerodev generates files in/dev/mapper/zerodev ext3 each partition with a maximum support of 2TB 10. Multipath Features:

, Cn=users,dc=open-cloud,dc=com "650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6D/30/wKiom1Vdv0mzA_y-AACbZF_vkdM112.jpg "/> Connecting iSCSI shares You need to connect iSCSI shared storage on two database servers, SQL01,SQL02, respectively. Installing Multipath I/O1. Log in to the SQL01 database server using Open-cloud\sqladmin

IntroductionOpenfiler is powered by Rpath Linux, a free, browser-based, Web Storage Management utility that provides file-based network-attached storage (NAS) and block-based storage area networks (Sans) in a single framework. Openfiler supports CIFS, NFS, Http/dav, and FTP.Openfiler can transform a standard X86/64 architecture system into a powerful NAS, SAN storage, and IP storage gateway, providing administrators with a powerful management platform and the ability to meet future storage requi

viii. in database services attached storage (MPIO) Connecting iSCSI shared StorageEnter Iscsicpl in the run, 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/6D/2B/wKioL1VdwVaR_hHeAACC-eXScSY045.jpg "/>Enter the iSCSI server IP address: 192.168.2.38, select Quick Connect,650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/6D/2B/wKioL1VdwVaAzvF_AAIy2RIMcRI703.jpg "/>In the Q

=650; "height=" 448 "title=" image "style=" margin:0px;border:0px;padding-top:0px;padding-right:0px; Padding-left:0px;background-image:none; "alt=" image "src=" http://s3.51cto.com/wyfs02/M00/58/45/ Wkiol1sttu3hpmidaagnlijps7a547.jpg "border=" 0 "/>11. Return to the Starwind Management console to view the created HA device650) this.width=650; "height=" 398 "title=" image "style=" margin:0px;border:0px;padding-top:0px;padding-right:0px; Padding-left:0px;background-image:none; "alt=" image "src="

protected] ~]# iscsiadm--mode discoverydb--type sendtargets--portal 192.168.4.3--discover[Email protected] ~]# iscsiadm--mode discoverydb--type sendtargets--portal 192.168.2.3--discover[[Email protected] ~]# service iSCSI Restart[[email protected] ~]# lsblk (view block HDD)SDB 8:16 0 20G 0 diskSDA 8:0 0 20G 0 disk[Email protected] ~]# chkconfig iscsid on[[email protected] ~]# yum-y install Device-mapper-multipath