几天前，我全新安装了 Ubuntu Server 14.04。一切运行正常，但当我的系统启动时，我在 dmesg 日志中收到以下条目：
[ 3.106082] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 3.864002] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro
[ 3.949562] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem
[ 3.952774] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null)
[ 3.969238] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)
[ 4.088581] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
[ 4.125580] EXT4-fs (sdd1): mounted filesystem with ordered data mode. Opts: (null)
[ 4.167318] EXT4-fs (sde1): mounted filesystem with ordered data mode. Opts: (null)
[ 4.273420] EXT4-fs (sdf1): mounted filesystem with ordered data mode. Opts: (null)
[ 4.305094] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)
这是我应该担心的事情吗？还是这是正常现象？如果是错误，有什么方法可以修复它吗？