[ovirt-users] Re: EqualLogic SAN controller switchover
On February 27, 2020 6:59:57 PM GMT+02:00, Chris Adams <cma(a)cmadams.net> wrote:
How well does oVirt handle an EqualLogic SAN controller switchover
event? IIRC that can result in a short iSCSI "pause" (can't remember
how long it takes) - I'm not sure what oVirt's threshold before VMs
(including the hosted engine) get paused for storage timeouts.
I've got a small setup where the active SAN controller's battery has
gone bad, so I need to switch to the other controller, and I'm trying
to
figure out the impact - do I need to shut all VMs (including the
engine)
down first, will they just briefly pause and then continue, etc.
Hi Chris,
Do you have an idea how long will it take ?
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.
For HA VMs , the behaviour could be different (yet I lack experience to give yoiu more
details).
Best Regards,
Strahil Nikolov