Two node storage failover with lvm and ISCSI

[Denny Schierz <linuxmail@4lin.net>]

hi,

we have two nodes connected to one big SAS storage (LSI 630j Jbod) with
SAS HBAs and they can see all disks at same time.
Now we want build a failover construct for lvm with ISCSI:

LSI Jbod -> node* | raid | lvm | ISCSI -> Global IP ->> Client

If the primary node fails, start raid on node two, activate lvm, export
them via ISCSI, take over the IP address.

There are many layers, that can fails, like raid, lvm, timing .... 

any suggestions?

cu denny

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