おまけ：今回のエラー

以下のようなエラーが出ていたため、メンテナンス決定しました。

Jan 2 05:13:22 ns2 kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jan 2 05:13:22 ns2 kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=105215024, sector=105215007
Jan 2 05:13:22 ns2 kernel: end_request: I/O error, dev hda, sector 105215007
Jan 2 05:13:25 ns2 kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jan 2 05:13:25 ns2 kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=105215024, sector=105215015
Jan 2 05:13:25 ns2 kernel: end_request: I/O error, dev hda, sector 105215015
Jan 2 05:13:28 ns2 kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jan 2 05:13:28 ns2 kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=105215024, sector=105215023
Jan 2 05:13:28 ns2 kernel: end_request: I/O error, dev hda, sector 105215023
Jan 2 05:22:05 ns2 kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jan 2 05:22:05 ns2 kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=105215024, sector=105215023
Jan 2 05:22:05 ns2 kernel: end_request: I/O error, dev hda, sector 105215023
Jan 2 05:22:08 ns2 kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Jan 2 05:22:08 ns2 kernel: hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=105215024, sector=105215023