From: Xiao Guangrong <guangrong.xiao@linux.intel.com>
To: "Richard W.M. Jones" <rjones@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Question about vNVDIMM file format
Date: Tue, 17 May 2016 01:39:32 +0800 [thread overview]
Message-ID: <573A05D4.9050906@linux.intel.com> (raw)
In-Reply-To: <20160516150401.GC28935@redhat.com>
On 05/16/2016 11:04 PM, Richard W.M. Jones wrote:
> I'm playing with ext4 and DAX.
Thanks for your try, Rich! :)
>
> I'm using:
>
> -object memory-backend-file,id=mem1,share,mem-path=/var/tmp/pmem,size=4G \
> -device nvdimm,memdev=mem1,id=nv1
>
> where /var/tmp/pmem is a 4 GB ext4 filesystem image (no partition
> table). I can mount this in the guest using:
>
> mount -o dax /dev/pmem0 /mnt
>
> and everything appears to work.
>
> I read in the mailing list that the pmem file has some internal
> structure for storing config data, stored in the last 128 KB of the
> file. Is that still the case?
The patchset supporting label data has not been merged yet so currently there
is no label data for vNVDIMM device.
prev parent reply other threads:[~2016-05-16 17:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-16 15:04 [Qemu-devel] Question about vNVDIMM file format Richard W.M. Jones
2016-05-16 16:53 ` Stefan Hajnoczi
2016-05-16 18:25 ` Richard W.M. Jones
2016-05-18 7:04 ` Xiao Guangrong
2016-05-18 8:11 ` Zhang, Haozhong
2016-05-18 10:50 ` Richard W.M. Jones
2016-05-18 17:36 ` Richard W.M. Jones
2016-05-16 17:39 ` Xiao Guangrong [this message]
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