private boolean checkMountPathAccessible() throws StoreException {
    File mountPath = new File(disk.getMountPath());
    if (!mountPath.exists() && diskHealthStatus != DiskHealthStatus.MOUNT_NOT_ACCESSIBLE) {
      metrics.diskMountPathFailures.inc();
      diskHealthStatus = DiskHealthStatus.MOUNT_NOT_ACCESSIBLE;
      throw new StoreException("Mount path does not exist: " + mountPath + " ; cannot start stores on this disk",
          StoreErrorCodes.InitializationError);
    }
    return mountPath.exists();
  }
@throws StoreException if the disk's mount path is inaccessible.

@return bool - True if mount is accessible otherwise False
ambry-store/src/main/java/com/github/ambry/store/DiskManager.java