2009-01-06

See /root/messages.sdf-failing. Or possibly just a raid glitch.

2009-01-18

Test

  • Connect drives
  • Assemble array
  • dd if=/dev/md3 bs=4k of=/dev/null

Reference

  • Drives direct SATA connected
  • Drives powered by enclosure PSU

Configuration

| A | B | C | D | E | | - | - | - | - | - | | 6 |   | 5 |   | 1 |

| F | 2 | | - | - | | G | 3 | | H | 4 |

Test backplane

Test Slot D

| A | B | C | D | E | | - | - | - | - | - | | 6 |   | 5 | 4 | 1 |

| F | 2 | | - | - | | G | 3 | | H |   |

  • Not Stable

Test Slot B

| A | B | C | D | E | | - | - | - | - | - | | 6 | 4 | 5 |   | 1 |

| F | 2 | | - | - | | G | 3 | | H |   |

  • Stable

Test Slot B & D

| A | B | C | D | E | | - | - | - | - | - | | 6 | 4 | 5 | 3 | 1 |

| F | 2 | | - | - | | G |   | | H |   |

  • Not Stable

Swap disks 3 and 4

| A | B | C | D | E | | - | - | - | - | - | | 6 | 3 | 5 | 4 | 1 |

| F | 2 | | - | - | | G |   | | H |   |

  • Not Stable

Swap power supply cables

  • Removed and cleaned 5-bay IcyDock
  • Swap power supply cables
  • Old: Cables 1->A, 2->BC, 3->DE.
  • New: 1->BC, 2->DE, 3->A
  • Stable

| A | B | C | D | E | | - | - | - | - | - | | 6 | 4 | 5 |   | 1 |

| F | 2 | | - | - | | G | 3 | | H |   |

Slot D again

| A | B | C | D | E | | - | - | - | - | - | | 6 |   | 5 | 4 | 1 |

| F | 2 | | - | - | | G | 3 | | H |   |

  • Stable

Slots B & D again

| A | B | C | D | E | | - | - | - | - | - | | 6 | 3 | 5 | 4 | 1 |

| F | 2 | | - | - | | G |   | | H |   |

  • Stable

Connect PMP bridges

  • Power up, leave disks direct-connected
  • Connect bottom bridge

| A | B | C | D | E | | - | - | - | - | - | | 6 | 3 | 5 | 4 | 1 |

| F | 2 | | - | - | | G |   | | H |   |

  • Stable

  • Connect upper bridge

  • Same configuration
  • Stable

PMP Connect Slot F

  • Connect F to bottom bridge
  • Connect bottom bridge through eSATA

| A | B | C | D | E | | - | - | - | - | - | | 6 | 3 | 5 | 4 | 1 |

| F | 2 | | - | - | | G |   | | H |   |

Reconnect Everything

  • Reconnected all drives through PMP bridges
  • PMP bridges to SiI3132
  • Reboot seemed normal

| A | B | C | D | E | | - | - | - | - | - | | 6 |   | 5 |   | 1 |

| F | 2 | | - | - | | G | 3 | | H | 4 |

  • All seems normal

2009-06-29

  • Occurred at 20h47
  • double disk failure
  • sdc? failed first
  • alarm in enclosure, ejected failed disk (should have removed with mdadm?)
  • made array read-only
  • system lock-up shortly thereafter?
  • See HasturRaidRecovery

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