Re: [Xen-users] Instable domU on debian stretch

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Sun, Sep 10, 2017 at 11:34:36AM +0200, jaap@xxxxxxxxxxx wrote:
> I experience instability of my xen domUs.
> The following error is raised:
> 
> [190190.556098] INFO: task jbd2/xvda7-8:409 blocked for more than 120
> seconds.

On the Dom0, can you try setting the following parameters:

# echo 2 > /sys/module/xen_blkback/parameters/max_queues
# echo 300 > /sys/module/xen_blkback/parameters/max_persistent_grants

And reboot your DomU?

Roger.

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