On 06/03/20 13:22 +0200, Strahil Nikolov wrote:
On March 6, 2020 11:06:13 AM GMT+02:00, Oyvind Albrigtsen
wrote:
Hi Strahil,
It seems like it tries to set one based on the resource name, and from
a quick check it seems like it also did on RHEL 7.5.
https://github.com/ClusterLabs/resource-agents/blob/master/heartbeat/iSCSILogicalUnit.in#L57
Oyvind
On 05/03/20 23:15 +0200, Strahil Nikolov wrote:
Hey Community,
I finaly got some time to report an issue with iSCSILogicalUnit and
scsi_id ( https://github.com/ClusterLabs/resource-agents/issues/1463
).
The issue was observed a while ago on RHEL 7.5 and SLES 12 SP4.
Do you know if any change was made to:
A) Either make 'scsi_id' a mandatory option
B) When 'scsi_id' is not provided by the admin, a random one is
picked (permanently)
If not, then the github issue is relevant.
Sadly, my exam (EX436) is on monday and I can't test it before that.
Best Rregards,
Strahil Nikolov
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Thanks for the reply, Oyvind
In an environment with naming convention that allows globally non-unique
resource names - this could cause the behaviour I have described in github (2
clusters, 2 separate luns, client's multipath aggregates them in 1 lun with 4
paths).
Do you think that a better approach will be to mark 'scsi_id' as mandatory
option (of course we can bypass with 'pcs --force') or we should randomly
set one on resource creation if the value is not defined ?
Of course , the algorithm can get a little modification - a random seed for
example.
The second & third options will be harder to implement as we got both pcs &
crmsh actively used among distributions, but will add some 'dummy proofness'. For me
the first option is easiest to implement.
Adding info about it in metadata might be the best way to go.
Making it mandatory might annoy users who use Ansible or other
solutions to setup having to change their Playbooks to set it.
Best Regards,
Strahil Nikolov
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