[PVE-User] prox storage replication <> iscsi multipath problem

[Tonči Stipičević]

Hi Wolfgang

Thank you for your response .

Everything is VLAN-separated ... all three multipath links have its own 
subnets and the link between zfs local storages uses its own 
VLAN-separated link (actually vmbr1 -> intranet link )

Any ideas  ? :)
-- 

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Tonči Stipičević, dipl. ing. Elektr.
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On 07/07/2017 12:00, pve-user-request at pve.proxmox.com wrote:
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> Today's Topics:
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>     1. prox storage replication <> iscsi multipath problem
>        (Tonči Stipičević)
>     2. Re: prox storage replication <> iscsi multipath problem
>        (Wolfgang Link)
>     3. corosync unicast : does somebody use it in production with
>        10-16 nodes ? (Alexandre DERUMIER)
>     4. Re: [pve-devel] corosync unicast : does somebody use it in
>        production with 10-16 nodes ? (Alexandre DERUMIER)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 7 Jul 2017 07:35:42 +0200
> From: Tonči Stipičević <tonci at suma-informatika.hr>
> To: pve-user at pve.proxmox.com
> Subject: [PVE-User] prox storage replication <> iscsi multipath
> 	problem
> Message-ID: <71c6acd8-8250-0b37-20c3-37f177ab4e8f at suma-informatika.hr>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hi to all,
>
>       I'm testing pvesr and it works correct so far and is big step ahead
> regarding migration/replication w/o shared storage. Actually that is
> something I was really waiting for , because it is easier to find
> neighborhood with two (only) server than two servers with shared
> storage. This is the way that one host can really back the other one up
> (since sync frequency is fine-tunable)
>
>       But I do have problem with some kind of collisions. My test lab has
> 3 hosts and one freenas shared storage. The connection in between is
> iscsi-target-multipath , so each node (incl freenas as shared storage ->
> lvm) has 3 nics . In order to test and play with pvesr I created zfspool
> on each host using local hard drive (1 drive -> one zfs volume ... no
> redundancy etc) and storage replication was working fine . But after a
> while iscsi-multipath connections are still on but  my shared lvm iscsi
> freenas storage disappears .  The only way I was able to got it back was
> deleting all pvesr jobs and  destroying zfs pools on each node.
>
> I repeated this scenario more time times but the result was the same
>
>
> I'm aware that this scenario ( shared storage and storage replication )
> is not kind a usual (but it should be possible) but I'm still wondering
> why this pvesr killed my  freenas-iscsi target ?
>
>
> Thank you in advance
>
> Best regards
> Tonci