Shani,
Can you help here with iSCSI bonding?
Thanks
On Mon, Jan 21, 2019 at 7:51 AM Uwe Laverenz <
uwe@laverenz.de> wrote:
Hi John,
Am 20.01.19 um 18:32 schrieb John Florian:
As for how to get there, whatever exactly that might look like, I'm also
having troubles figuring that out. I figured I would transform the
setup described below into one where each host has:
* 2 NICs bonded with LACP for my ovirtmgmt and "main" net
* 1 NIC for my 1st storage net
* 1 NIC for my 2nd storage net
This is exactly the setup I use. I have run this successfully with
CentOS/LIO and FreeNAS iSCSI targets with good performance.
In short:
- 2 separate, isolated networks for iSCSI with dedicated adapters
on hosts and iSCSI target
- jumbo frames enabled
- no VLANs config needed on hosts, untagged VLANs on switch
- do _not_ use LACP, let multipathd handle failovers
Same experience as Vinicius: what did _not_ work for me is the
iSCSI-Bonding in OVirt. It seems to require that all storage IPs are
reachable from all other IPs, which is not the case in every setup.
To get multipathing to work I use multipath directly:
https://www.mail-archive.com/users@ovirt.org/msg42735.html
I will post a bonnie++ result later. If you need more details please let
me know.
cu,
Uwe
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