So I found solution by myself.

I turned off corrupted host, then on pool master I forgot corrupted host (xe host-forget uuid=aaaaaaaaa-bbbb-cccc-ddddddddddd).

Perform a clean install of corrupted host, setup everything as it was, then patch host with XOA.

As last step I connect it back to the pool, now everything is working fine again.

To be honest, I do not know what happened, but everything is working now.

So I found solution by myself.

I turned off corrupted host, then on pool master I forgot corrupted host (xe host-forget uuid=aaaaaaaaa-bbbb-cccc-ddddddddddd).

Perform a clean install of corrupted host, setup everything as it was, then patch host with XOA.

As last step I connect it back to the pool, now everything is working fine again.

To be honest, I do not know what happened, but everything is working now.

@Gheppy There nothing changed with iSCSI it can ping without any problem. And master is connecting sucesfully.

Hello, today I install latest patches and after reboot host is locked in maintenance mode and as I see it seems toolstack is still restarting. The host is in pool and master is working correctly without any trouble. When I use command 'xe task-list' it says The host toolstack is still intialising. Please wait.

All SRs are connected.

What can I do please?

Thank you for your help.

Hello, from witch url are xcp-ng patches being download? Thank you.