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Add multidevs option to fsdev

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multidevs specifies how to deal with multiple devices being shared with a 9p
export. `multidevs=remap` fixes the following warning:

```
9p: Multiple devices detected in same VirtFS export, which might lead to file
ID collisions and severe misbehaviours on guest!
You should either use a separate export for each device shared from host or
use virtfs option 'multidevs=remap'!
```

Signed-off-by: Julio Montes <julio.montes@intel.com>
This commit is contained in:
Julio Montes
2020-07-22 11:36:14 -05:00
parent 7cc469641b
commit abca6f3ce9
4 changed files with 28 additions and 2 deletions
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2
qemu/qemu_s390x_test.go
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@@ -23,7 +23,7 @@ import "testing"
// -pci devices don't play well with Z hence replace them with corresponding -ccw devices
// See https://wiki.qemu.org/Documentation/Platforms/S390X
var (
deviceFSString = "-device virtio-9p-ccw,fsdev=workload9p,mount_tag=rootfs,devno=" + DevNo + " -fsdev local,id=workload9p,path=/var/lib/docker/devicemapper/mnt/e31ebda2,security_model=none"
deviceFSString = "-device virtio-9p-ccw,fsdev=workload9p,mount_tag=rootfs,devno=" + DevNo + " -fsdev local,id=workload9p,path=/var/lib/docker/devicemapper/mnt/e31ebda2,security_model=none,multidevs=remap"
deviceNetworkString = "-netdev tap,id=tap0,vhost=on,ifname=ceth0,downscript=no,script=no -device driver=virtio-net-ccw,netdev=tap0,mac=01:02:de:ad:be:ef,devno=" + DevNo
deviceNetworkStringMq = "-netdev tap,id=tap0,vhost=on,fds=3:4 -device driver=virtio-net-ccw,netdev=tap0,mac=01:02:de:ad:be:ef,mq=on,devno=" + DevNo
deviceSerialString = "-device virtio-serial-ccw,id=serial0,devno=" + DevNo