Re: [Xen-devel] 4.9.52: INFO: task XXX blocked for more than 300 seconds.

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

On Wed, Oct 04, 2017 at 06:26:27PM +0000, Philipp Hahn wrote:
> > INFO: task btrfs-transacti:522 blocked for more than 300 seconds.
[...] 
> And another one:
> > INFO: task smbd:20101 blocked for more than 300 seconds.
[...] 
> This does not look normal to me or did I miss something?

So I see that both of the stuck processes listed above (smbd and
btrfs-*) are disk related processes. Might I ask how many disk/nics
(PV) do you have attached to this DomU, and how many queues does each
have?

Thanks, Roger.

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