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Add ecryptfs check for overlay2 

We added docs about ecryptfs check but not in code side.
Also refactor code to make it clean.

Signed-off-by: Kai Qiang Wu(Kennan) <wkqwu@cn.ibm.com>
(cherry picked from commit 136323b043)
This commit is contained in:
Kai Qiang Wu(Kennan) 2016-06-14 14:01:41 +00:00 committed by Tibor Vass
parent c73e56fd7f
commit 82453c84ba
1 changed files with 2 additions and 11 deletions
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13
daemon/graphdriver/overlay2/overlay.go
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@ -116,17 +116,8 @@ func Init(home string, options []string, uidMaps, gidMaps []idtools.IDMap) (grap
// check if they are running over btrfs, aufs, zfs or overlay
switch fsMagic {
case graphdriver.FsMagicBtrfs:
logrus.Error("'overlay' is not supported over btrfs.")
return nil, graphdriver.ErrIncompatibleFS
case graphdriver.FsMagicAufs:
logrus.Error("'overlay' is not supported over aufs.")
return nil, graphdriver.ErrIncompatibleFS
case graphdriver.FsMagicZfs:
logrus.Error("'overlay' is not supported over zfs.")
return nil, graphdriver.ErrIncompatibleFS
case graphdriver.FsMagicOverlay:
logrus.Error("'overlay' is not supported over overlay.")
case graphdriver.FsMagicBtrfs, graphdriver.FsMagicAufs, graphdriver.FsMagicZfs, graphdriver.FsMagicOverlay, graphdriver.FsMagicEcryptfs:
logrus.Errorf("'overlay' is not supported over %s", backingFs)
return nil, graphdriver.ErrIncompatibleFS
}