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drbd-user: Re: [DRBD-user] drbd pacemaker scst/srp 2 node active

Re: [DRBD-user] drbd pacemaker scst/srp 2 node active/passive question

From: Lionel Sausin <ls_at_nospam>
Date: Fri Mar 01 2013 - 08:39:00 GMT
To: drbd-user@lists.linbit.com

Le 01/03/2013 03:49, Jason Thomas a écrit :
> (...)
> What I see as the potential problem is lvm and scst are only active on the primary node thus the secondary node is un-discoverable by ESXi host until it fails over. I am not sure what the answer is but my thought process is I am trying to figure out if it is possible to have:
> 1. on the node1 (primary node) drbd(primary), lvm, scst with the target in read/write mode
> 2. on the node2 (secondary node) drbd(secondary), lvm, scst with the target in read mode
On Node2, the target's block device won't exist until it's primary. You
need to either promote both nodes to "primary" at the DRBD level, or
start your target without attaching a block device to it (no idea if
this is possible in scst).
Lionel Sausin
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