[ovirt-users] iSCSI Multipathing -> host inactive

[Nicolas Ecarnot]

Le 25/08/2016 à 13:37, InterNetX - Juergen Gotteswinter a écrit :
>
>> Am 24.08.2016 um 17:15 schrieb InterNetX - Juergen Gotteswinter:
>>> iSCSI & Ovirt is an awful combination, no matter if multipathed or
>>> bonded. its always gambling how long it will work, and when it fails why
>>> did it fail.

We are using oVirt + iSCSI, but using bonding mode 1 (active/passive) 
and no multipathing.

It is running OK. So far.

>>>
>>> its supersensitive to latency, and superfast with setting an host to
>>> inactive because the engine thinks something is wrong with it. in most
>>> cases there was no real reason for.

You are not wrong...

>>>
>>> we had this in several different hardware combinations, self built
>>> filers up on FreeBSD/Illumos & ZFS, Equallogic SAN, Nexenta Filer
>>>
>>> Been there, done that, wont do again.
>>
>> Thank you, I take this as a warning. :)
>>
>> For my testbed I chose to ignore the iSCSI-bond feature and change the
>> multipath default to round robin instead.
>>
>> What kind of storage do you use in production? Fibre channel, gluster,
>> ceph, ...?
>
>>>
>>> we had this in several different hardware combinations, self built
>>> filers up on FreeBSD/Illumos & ZFS, Equallogic SAN, Nexenta Filer
>
> currently, iscsi multipathed with solaris based filer as backend. but
> this is already in progress of getting migrated to a different, less
> fragile, plattform. ovirt is nice, but too bleeding edge and way to much


> acting like a _girly_

Man, you killed me! :) :) :)

-- 
Nicolas ECARNOT, crying laughing :) :) :)