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fix kubernetes issue #65204 #1971

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Merged
dashpole merged 1 commit into from
Jun 20, 2018
Merged

fix kubernetes issue #65204 #1971

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15 changes: 15 additions & 0 deletions fs/fs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -533,6 +533,21 @@ func (self *RealFsInfo) GetDirFsDevice(dir string) (*DeviceInfo, error) {
}

mount, found := self.mounts[dir]
// try the parent dir if not found until we reach the root dir
// this is an issue on btrfs systems where the directory is not
// the subvolume
for !found {
pathdir, _ := filepath.Split(dir)
// break when we reach root
if pathdir == "/" {
break
}
// trim "/" from the new parent path otherwise the next possible
// filepath.Split in the loop will not split the string any further
dir = strings.TrimSuffix(pathdir, "/")
mount, found = self.mounts[dir]
}

if found && mount.Fstype == "btrfs" && mount.Major == 0 && strings.HasPrefix(mount.Source, "/dev/") {
major, minor, err := getBtrfsMajorMinorIds(mount)
if err != nil {
Expand Down