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From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
To: Bharat Kunwar <bharat@stackhpc.com>
Cc: virtio-fs@redhat.com
Subject: Re: [Virtio-fs] Issues running fio tests against a network mount routed from the host
Date: Wed, 19 Jun 2019 20:10:31 +0100	[thread overview]
Message-ID: <20190619191030.GI2844@work-vm> (raw)
In-Reply-To: <2D50E1B6-E051-42F1-8962-71B7436E4CF9@stackhpc.com>

* Bharat Kunwar (bharat@stackhpc.com) wrote:
> Hello

Hi,

> I am here to describe a problem that I’ve run into when trying to run `fio` against a network mount routed from the host using virtiofs. My wider context is that I am doing this in a kata-containerised Kubernetes environment using the new `kata-qemu` introduced in version 1.7. I have previously run the same tests with `kata-qemu` runtime with 9p filesystem and the same tests have run to completion.
> 
> Just to clarify, I can run the same fio tests to a local filesystem on the host and things run happily to completion. I have attached perf flame graphs corresponding to the failure cases, BeeGFS and CephFS and the successful case with host filesystem. The Fhgfs* process are related to BeeGFS.
> 
> I enabled debug on the kata side the the resulting systemd journal entries are captured in debug.log attached. Let me know if I can provide any more diagnostic info. I am currently attempting to build an image to boot up with symbols enabled so that I can capture some backtraces but that is all taking longer than expected (having never built a kernel tarball before). If there is a prebuilt image that I can use to boot up to use with virtiofs, let me know as that’d save me a ton of time.

For some reason the SVGs don't seem to want to open for me; but they're
probably the wrong thing anyway; and I don't see the log you say you
attacked - those sound potentially useful.

Which fio test fails exactly, and with what error?

Dave

> Best
> 
> Bharat
> 
> 
> 
> 
> 




> _______________________________________________
> Virtio-fs mailing list
> Virtio-fs@redhat.com
> https://www.redhat.com/mailman/listinfo/virtio-fs

--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK


      parent reply	other threads:[~2019-06-19 19:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-14 20:45 [Virtio-fs] Issues running fio tests against a network mount routed from the host Bharat Kunwar
2019-06-18  1:29 ` Eric Ren
2019-06-19 19:10 ` Dr. David Alan Gilbert [this message]

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