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

["Michael S. Tsirkin" <mst@redhat.com>]

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

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.

Strange.

-- 
MST