Re: [Qemu-devel] 9pfs troubles (was Re: [PATCH 1/4] hw/9pfs: fix error handing in local_ioc_getversion())

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

"Michael S. Tsirkin" <mst@redhat.com> writes:

> Haven't used 9pfs in a while.
> I thought these patches are a good time to play with it some more.
> I have encountered two issues.
>
> What I'm doing:
> host: qemu a75143eda2ddf581b51e96c000974bcdfe2cbd10.
>
> /scm/qemu/x86_64-softmmu/qemu-system-x86_64 -enable-kvm -m 1g -cpu kvm64
> -smp 2  f20-x64.qcow2  -netdev user,id=foo -redir tcp:8022::22 -device
> virtio-net,netdev=foo  -serial stdio -fsdev
> local,security_model=none,id=fsdev0,path=/lib/modules/ -device
> virtio-9p-pci,id=fs0,fsdev=fsdev0,mount_tag=libmodulesshare -fsdev
> local,security_model=none,id=fsdev1,path=/boot -device
> virtio-9p-pci,id=fs1,fsdev=fsdev0,mount_tag=bootshare -no-reboot
> -snapshot
>
> guest: Fedora 20
>
> added this in /etc/fstab:
>
> bootshare       /share/boot     9p      trans=virtio,version=9p2000.L 0 0
> libmodulesshare /share/lib/modules      9p trans=virtio,version=9p2000.L 0 0
>
>
> I have encountered two issues:
>
> 1. mount failure on boot
> If I try to mount on boot through fstab, I get:
> [    2.270157] 9pnet: Could not find request transport: virtio
> [    2.270158] 9pnet: Could not find request transport: virtio


Missing 9pnet_virtio.ko module ? 

>
> If I then re-try mount, it succeeds immediately!
>
> Some kind of dependency issue?
>
> 2. files immediately in the mounted directory aren't visible on the
> guest under /share/boot.
> For example, files under /boot on host are not visible
> on guest, files under child directories seem visible.


can you share more details on this ? /boot permissions. ls -al output on
host etc.

-aneesh