It has failed again with:
ALARM! RAID configuration problem
Current configuration is:
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hdg3[1] hde3[0]
264960 blocks [2/2] [UU]
md1 : active raid1 hdg2[1](F) hde2[0]
116848704 blocks [2/1] [U_]
md0 : active raid1 hde1[0] hdg1[1]
104320 blocks [2/2] [UU]
unused devices: <none>
Last known good configuration was:
Personalities : [raid1]
read_ahead 1024 sectors
md2 : active raid1 hde3[0] hdg3[1]
264960 blocks [2/2] [UU]
md1 : active raid1 hde2[0] hdg2[1]
116848704 blocks [2/2] [UU]
md0 : active raid1 hde1[0] hdg1[1]
104320 blocks [2/2] [UU]
unused devices: <none>
Also this in the messages log:
Sep 28 18:04:27 servername kernel: hdg: 0 bytes in FIFO
Sep 28 18:04:27 servername kernel: hdg: timeout waiting for DMA
Sep 28 18:04:27 servername kernel: hdg: dma_intr: status=0x51 { DriveReady SeekComplete Error }
Sep 28 18:04:27 servername kernel: hdg: dma_intr: error=0x40 { UncorrectableError }, LBAsect=359749, high=0, low=359749, Sector=150904
Sep 28 18:04:27 servername kernel: end_request: I/O error, dev 22:02 (hdg), sector 150904
Sep 28 18:04:27 servername kernel: raid1: Disk failure on hdg2, disabling device.
Sep 28 18:04:27 servername kernel: ^IOperation continuing on 1 devices
Sep 28 18:04:27 servername kernel: raid1: hdg2: rescheduling block 150904
Sep 28 18:04:27 servername kernel: md: updating md1 RAID superblock on device
Sep 28 18:04:27 servername kernel: md: (skipping faulty hdg2 )
Sep 28 18:04:27 servername kernel: md: hde2 [events: 0000001d]<6>(write) hde2's sb offset: 116848704
Sep 28 18:04:27 servername kernel: md: recovery thread got woken up ...
Sep 28 18:04:27 servername kernel: md1: no spare disk to reconstruct array! -- continuing in degraded mode
Sep 28 18:04:27 servername kernel: md: recovery thread finished ...
Sep 28 18:04:27 servername kernel: raid1: hde2: redirecting sector 150904 to another mirror
I guess the HDD is no good. I'll try replacing it and let you know here how it goes. Thanks again for all your help.