Red Hat ENTERPRISE LINUX 5.1 DM MULTIPATH Bedienungsanleitung PDF herunterladen (Seite 1)

White Paper

Implement iSCSI

multipath in RHEL5

Tim Chung

Version 1.3 (DEC, 2008)

QSAN Technology, Inc.

http://www.qsan.com.tw

White Paper# QWP200801-P150C

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White Paper Implement iSCSI multipath in RHEL5 Tim Chung Version 1.3 (DEC, 2008) QSAN Technology, Inc. http://www.qsan.com.tw Whit

White Paper lntroduction In this document, it describes how to connect an iSCSI target in RHEL via software iSCSI initiator and use the device-mapper

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White Paper Installation All the necessary rpm packages can be found in the RHEL5 DVD, install them as follows: # rpm –ivh iscsi-initiator-utils-6.2

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White Paper # iscsiadm --mode discovery --type sendtargets --portal target_ip Also can be express as # iscsiadm –m discovery –t st –p target_ip Exa

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White Paper # iscsiadm –m session –r session_id –u # iscsiadm –m session –r 0 –u Logging out of session [sid: 1, target: iqn.2004-08…(omission)…p15

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White Paper 3. Next, the alias of iSCSI device will be created. The alias name will help iSCSI device to be identified easily. Find the UUID of iSCSI

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White Paper 1 print the multipath names only 2 print all info 3 print debug information -p policy force all maps to specified path_grouping_policy

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White Paper \_ 3:0:0:0 sdc 8:32 [active][ready] Now, the abstract device /dev/mapper/Qsandisk which groups /dev/sdb and /dev/sdc are ready to be use

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Red Hat ENTERPRISE LINUX 5.1 DM MULTIPATH Bedienungsanleitung Seite 1