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Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support.
From: |
jvrao |
Subject: |
Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support. |
Date: |
Tue, 20 Apr 2010 23:33:25 -0700 |
User-agent: |
Thunderbird 2.0.0.24 (Windows/20100228) |
Mohammed Gamal wrote:
> On Tue, Apr 20, 2010 at 8:36 PM, jvrao <address@hidden> wrote:
>
> ... <snip> ...
>
>>> This'd be something interesting to do. I wonder if that would fit in
>>> the GSoC timeframe, or whether it'd be a little too short. So how long
>>> you'd estimate something like that would take?
>> I think it would take ~3PM for someone with decent VFS/NFS knowledge.
>> They key is fh-to-dentry mapping. In the loose cache mode client caches
>> this information .. but even in this mode we can't assume that it will be
>> cached
>> forever. Need protocol amendments, client/server side changes to implement
>> this in the no-cache mode which can be used even in the loose cache mode when
>> we get a cache-miss.
>>
>> Thanks,
>> JV
>
> I think I'd be glad to go for virtio-9p in GSoC. The roadmap is a
> little bit hazy for me at the moment but I think we can set the goals.
> I'd appreciate some pointers as to where to get more info on what to
> do and if there is any relevant documentation on that matter.
You can wet your feet by starting with the patch set
"[Qemu-devel] [PATCH -V5 00/21] virtio-9p: paravirtual file system passthrough"
on the mailing list.
Start QEMU on any latest distro like Fedora 12; choose mainline kernel for
guest.
You can start QEMU with something like "-virtfs
local,path=/tmp/,mount_tag=v_tmp"
and mount it on the guest. ex: mount -t 9p -o trans=virtio -o debug=0xFFFF
v_tmp /mnt.
http://plan9.bell-labs.com/wiki/plan9/9p2010/index.html gives basic information
on .L protocol.
You can start to play around.. by exporting NFS on top of VirtFS..
Thanks,
JV
>
> Regards,
> Mohammed
>
>
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., (continued)
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., Alexander Graf, 2010/04/12
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., Jamie Lokier, 2010/04/12
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., Alexander Graf, 2010/04/12
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., jvrao, 2010/04/12
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., jvrao, 2010/04/13
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., Mohammed Gamal, 2010/04/13
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., jvrao, 2010/04/19
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., Mohammed Gamal, 2010/04/20
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., jvrao, 2010/04/20
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., Mohammed Gamal, 2010/04/21
- Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support.,
jvrao <=
Re: [Qemu-devel] [GSoC 2010] Pass-through filesystem support., jvrao, 2010/04/12