wikiISCSI Multipathing under Linux
Device Mapper Multipath I/O DM-MPIO can be used for iSCSI Multipathing under Linux.
General information
Detailed information (also about node.session.timeo.replacement_timeout parameter) can be found on the following pages:
- Novell Communities: Implementing MPIO over iSCSI: Considerations, Common Issues and Clustering Concerns
- EMC iSCSI server setup guide for Linux (see table 3 on pages 14 and 15: recommended settings of the Open-iscsi driver)
- Linux Open-iSCSI README (see 8.1.2 replacement_timeout)
Red Hat
Red Hat offers the following instructions for RHEL5:
- RHEL5 Online Storage Reconfiguration Guide (Here, the subchapter 16.2. iSCSI Settings With dm-multipath in chapter 16. Modifying Link Loss Behavior is particularly relevant)
Here are the instructions instructions for RHEL4 / CentOS 4:
SUSE
- SLES10: Storage Administration Guide (chapter Managing Multipath I/O for Devices)
Notifications
iSCSI Multipathing can be generally achieved with MC/S (Multiple Connections per session). MC/S is not supported by the Linux iSCSI Software-Initiator Open-iSCSI (view MC/S compatibility information on LIO Linux iSCSI Targets).
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Author: Werner Fischer Werner Fischer, working in the Knowledge Transfer team at Thomas-Krenn, completed his studies of Computer and Media Security at FH Hagenberg in Austria. He is a regular speaker at many conferences like LinuxTag, OSMC, OSDC, LinuxCon, and author for various IT magazines. In his spare time he enjoys playing the piano and training for a good result at the annual Linz marathon relay.
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Translator: Alina Ranzinger Alina has been working at Thomas-Krenn.AG since 2024. After her training as multilingual business assistant, she got her job as assistant of the Product Management and is responsible for the translation of texts and for the organisation of the department.
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