On February 27, 2020 8:49:16 PM GMT+02:00, Christopher Cox <ccox(a)endlessnow.com>
wrote:
This might help.
https://www.dell.com/community/EqualLogic/Linux-multipath-conf-Multipathd...
What the first poster said about Dell's recommendations are accurate
(I'm a long time Equallogic user)
On 2/27/20 12:34 PM, eevans(a)digitaldatatechs.com wrote:
> I worked with Equalogic in the past. Doesn't it have the ability to
replicate to a partner Equalogic?
> If so, replicate, once complete do a failover to the new one.
> That may be a simplistic approach and not sure if it's Dell best
practices to do so.
> Just a thought.
>
> Eric Evans
> Digital Data Services LLC.
> 304.660.9080
>
>
> -----Original Message-----
> From: Chris Adams <cma(a)cmadams.net>
> Sent: Thursday, February 27, 2020 12:55 PM
> To: users(a)ovirt.org
> Subject: [ovirt-users] Re: EqualLogic SAN controller switchover
>
> Once upon a time, Strahil Nikolov <hunter86_bg(a)yahoo.com> said:
>> Do you have an idea how long will it take ?
>
> No, it has been years and years since I had to do a switchover on an
EqualLogic (they mostly just run). I know I've read of others using
EqualLogic's for oVirt, so I'm hoping for someone who's experienced a
switchover...
>
>> Keep in mind that in case the domain is declared unavailable
(reached a threshold , which I doesn't know) , all VMs using it
will be paused and oVirt will try to recover them once the storage is
back available.
>
> Right - with the hosted engine on the SAN, I am also curious how that
is impacted (how will the engine HA tooling handle a pause).
> --
> Chris Adams <cma(a)cmadams.net>
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I don't think that it will work.
oVirt 's internal mechanisms do not rely multipath to provide an error up in the stack
, instead if it cannot write/read in the defined threshold - it will still asume that the
storage domain is down.
At least that was discussed on the mail list some time ago and I could be wrong.
Best Regards,
Strahil Nikolov