From: Xiao Guangrong <guangrong.xiao-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Yumei Huang <yuhuang-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
KVM <kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org"
<linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org"
<qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org>,
Linux ACPI <linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Stefan Hajnoczi
<stefanha-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: DAX can not work on virtual nvdimm device
Date: Wed, 31 Aug 2016 16:44:47 +0800 [thread overview]
Message-ID: <25098f37-53f7-6d5d-0b1a-8469bab51a9f@linux.intel.com> (raw)
In-Reply-To: <CAPcyv4hrFSxNcmmVLVZT4fK3+hspPCDKW0rVBj1=3GkJRgZ29Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On 08/31/2016 01:09 AM, Dan Williams wrote:
>
> Can you post your exact reproduction steps? This test is not failing for me.
>
Sure.
1. make the guest kernel based on your tree, the top commit is
10d7902fa0e82b (dax: unmap/truncate on device shutdown) and
the config file can be found in this thread.
2. add guest kernel command line: memmap=6G!10G
3: start the guest:
x86_64-softmmu/qemu-system-x86_64 -machine pc,nvdimm --enable-kvm \
-smp 16 -m 32G,maxmem=100G,slots=100 /other/VMs/centos6.img -monitor stdio
4: in guest:
mkfs.ext4 /dev/pmem0
mount -o dax /dev/pmem0 /mnt/pmem/
echo > /mnt/pmem/xxx
./mmap /mnt/pmem/xxx
./read /mnt/pmem/xxx
The source code of mmap and read has been attached in this mail.
Hopefully, you can detect the error triggered by read test.
Thanks!
next prev parent reply other threads:[~2016-08-31 8:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-19 11:19 DAX can not work on virtual nvdimm device Xiao Guangrong
2016-08-19 14:59 ` Dan Williams
[not found] ` <CAPcyv4hVgi6Hw8Beg=Nt78+U0QNJN9mBGWEp3V6bg86NaM3Q6Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-08-19 18:30 ` Ross Zwisler
[not found] ` <20160819183047.GA7216-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-08-21 9:55 ` Boaz Harrosh
2016-08-29 7:54 ` Xiao Guangrong
[not found] ` <600ac51c-0f61-6e53-9bfa-669c85494d1f-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-08-29 19:30 ` Ross Zwisler
[not found] ` <20160829193014.GB16738-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-08-30 6:53 ` Xiao Guangrong
2016-08-30 17:09 ` Dan Williams
[not found] ` <CAPcyv4hrFSxNcmmVLVZT4fK3+hspPCDKW0rVBj1=3GkJRgZ29Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-08-31 8:44 ` Xiao Guangrong [this message]
[not found] ` <25098f37-53f7-6d5d-0b1a-8469bab51a9f-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-08-31 16:46 ` Ross Zwisler
2016-09-02 2:57 ` Ross Zwisler
[not found] ` <20160902025738.GA26108-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-09-06 15:06 ` Jan Kara
[not found] ` <20160906150620.GJ28922-4I4JzKEfoa/jFM9bn6wA6Q@public.gmane.org>
2016-09-08 20:47 ` Ross Zwisler
[not found] ` <20160908204708.GA15167-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-09-09 9:19 ` Jan Kara
[not found] ` <20160909091925.GF22777-4I4JzKEfoa/jFM9bn6wA6Q@public.gmane.org>
2016-09-09 14:03 ` Theodore Ts'o
[not found] ` <20160909140327.r2j64s5xdaxnnxhx-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2016-09-09 16:34 ` Ross Zwisler
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