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Add error when running overlay over btrfs.

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Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)
This commit is contained in:
Jessica Frazelle 2014-12-28 15:08:42 -08:00
parent 8722b6db4b
commit 32f1025b22
1 changed files with 15 additions and 0 deletions
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15
daemon/graphdriver/overlay/overlay.go
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@ -99,6 +99,21 @@ func Init(home string, options []string) (graphdriver.Driver, error) {
return nil, graphdriver.ErrNotSupported
}
// check if they are running over btrfs
var buf syscall.Statfs_t
if err := syscall.Statfs(path.Dir(home), &buf); err != nil {
return nil, err
}
switch graphdriver.FsMagic(buf.Type) {
case graphdriver.FsMagicBtrfs:
log.Error("'overlay' is not supported over btrfs.")
return nil, graphdriver.ErrIncompatibleFS
case graphdriver.FsMagicAufs:
log.Error("'overlay' is not supported over aufs.")
return nil, graphdriver.ErrIncompatibleFS
}
// Create the driver home dir
if err := os.MkdirAll(home, 0755); err != nil && !os.IsExist(err) {
return nil, err