Hi, first, I hope that I have found the correct list for this question, as it is not really a devel but a multipath user question. I want to build a ha-cluster for kvm-virtualisation. I have some blades and each blade has two network interfaces. The storage for the virtualmachines is provides by two iSCSIs systems which are connected with two interfaces each.
My plan was that the iSCSI-traffic should use the second interface by default, and only use the first interface, if the second path is down, as the first network interface is used by the other network traffic. Consulting the manpage and the net i found that setting path_grouping_policy to group_by_prio and setting the priority for the default path higher than the other path should do the trick. I could set the priority with prio weightedpath, but the Host part of the HBTL is different on some blades as are the device names. I would like to use the same multipath config on all blades and i am certain that both the HBTL and the device name may change on reboot. Before version 0.4.9 there was the option to configure prio_callout and use a script to set the priority but that's not possible any more. Is there a way to use /dev/disk/by-path in weightedpath? Is it possible to write my own priority routine and still to use themultipath package from the distribution? If so is there any documentation/examples how to do this?
Regards Michael Menge -------------------------------------------------------------------------------- M.Menge Tel.: (49) 7071/29-70316 Universität Tübingen Fax.: (49) 7071/29-5912Zentrum für Datenverarbeitung mail: michael.menge@xxxxxxxxxxxxxxxxxxxx
Wächterstraße 76 72074 Tübingen
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