func (ZpoolTests) TestOrphanedZpoolFileAdoption(c *C) {
dataset := "testpool-bananagram"
backingFilePath := fmt.Sprintf("/tmp/zfs-%s", random.String(12))
defer os.Remove(backingFilePath)
provider, err := NewProvider(&ProviderConfig{
DatasetName: dataset,
Make: &MakeDev{
BackingFilename: backingFilePath,
Size: one_gig,
},
})
defer func() {
pool, _ := gzfs.GetZpool(dataset)
if pool != nil {
pool.Destroy()
}
}()
c.Assert(err, IsNil)
c.Assert(provider, NotNil)
// add a dataset to this zpool, so we can check for it on the flip side
markerDatasetName := path.Join(dataset, "testfs")
_, err = gzfs.CreateFilesystem(markerDatasetName, nil)
c.Assert(err, IsNil)
// do a 'zpool export'
// this roughly approximates what we see after a host reboot
// (though host reboots may leave it in an even more unclean state than this)
err = exec.Command("zpool", "export", "-f", dataset).Run()
c.Assert(err, IsNil)
// sanity check that our test is doing the right thing: zpool forgot about these
_, err = gzfs.GetDataset(dataset)
c.Assert(err, NotNil)
_, err = gzfs.GetDataset(markerDatasetName)
c.Assert(err, NotNil)
// if we create another provider with the same file vdev path, it should
// pick up that file again without wrecking the dataset
provider, err = NewProvider(&ProviderConfig{
DatasetName: dataset,
Make: &MakeDev{
BackingFilename: backingFilePath,
Size: one_gig,
},
})
c.Assert(err, IsNil)
c.Assert(provider, NotNil)
_, err = gzfs.GetDataset(markerDatasetName)
c.Assert(err, IsNil)
}
func (b *Provider) NewVolume() (volume.Volume, error) {
id := random.UUID()
v := &zfsVolume{
info: &volume.Info{ID: id},
provider: b,
basemount: b.mountPath(id),
}
var err error
v.dataset, err = zfs.CreateFilesystem(path.Join(v.provider.dataset.Name, id), map[string]string{
"mountpoint": v.basemount,
})
if err != nil {
return nil, err
}
b.volumes[id] = v
return v, nil
}