GEOM problems again...

[Johan Ström]

Hi

I've had problems before with GEOM mirror and my SATA drives, and  
i've posted about it here before too. The solution seemd to be a  
change of motherboard, this reduced the crash very much (and also the  
speeds archieved was greatly improved, from 10-15MB/s to 40-50MB/s..).
However after the change i had one or two crashes, but now it has  
been running for well over 50-60 days or so without any problems.
Then, 11 days ago I upgraded to 6.1... And now I got these "crashe"s  
again (the mirror is crashed that is, the system still runs fine):

May 21 02:04:58 elfi kernel: ad6: FAILURE - device detached
May 21 02:04:58 elfi kernel: subdisk6: detached
May 21 02:04:58 elfi kernel: ad6: detached
May 21 02:04:58 elfi kernel: GEOM_MIRROR: Device gm0s1: provider  
ad6s1 disconnected.
May 21 02:04:58 elfi kernel: g_vfs_done():mirror/gm0s1f[READ 
(offset=11006308352, length=2048)]error = 6
May 21 02:04:58 elfi kernel: g_vfs_done():mirror/gm0s1f[READ 
(offset=164847927296, length=131072)]error = 6
May 21 02:04:58 elfi kernel: g_vfs_done():mirror/gm0s1f[READ 
(offset=256680296448, length=32768)]error = 6


Some info about the controller and disks:

May  9 22:46:52 elfi kernel: ata1: <ATA channel 1> on atapci0
May  9 22:46:52 elfi kernel: atapci1: <nVidia nForce2 Pro SATA150  
controller> port  
0xec00-0xec07,0xe880-0xe883,0xe800-0xe807,0xe480-0xe483,0x7f00-0x7f0f, 
0x7c0
0-0x7c7f irq 22 at device 11.0 on pci0

May  9 22:46:52 elfi kernel: ad4: 286188MB <Maxtor 7L300S0 BANC1G10>  
at ata2-master SATA150
May  9 22:46:52 elfi kernel: ad6: 286188MB <Maxtor 7L300S0 BANC1G10>  
at ata3-master SATA150
May  9 22:46:52 elfi kernel: GEOM_MIRROR: Device gm0s1 created  
(id=4118114647).
May  9 22:46:52 elfi kernel: GEOM_MIRROR: Device gm0s1: provider  
ad4s1 detected.
May  9 22:46:52 elfi kernel: GEOM_MIRROR: Device gm0s1: provider  
ad6s1 detected.
May  9 22:46:52 elfi kernel: GEOM_MIRROR: Device gm0s1: provider  
ad6s1 activated.
May  9 22:46:52 elfi kernel: GEOM_MIRROR: Device gm0s1: provider  
ad4s1 activated.
May  9 22:46:52 elfi kernel: GEOM_MIRROR: Device gm0s1: provider  
mirror/gm0s1 launched.
May  9 22:46:52 elfi kernel: Trying to mount root from ufs:/dev/ 
mirror/gm0s1a

Anyone got any new clues? Afaik the disks should be working fine  
(they are 6 months old and this same problem has occured multiple  
times...)

Hope to solve this ;)

Thanks
Johan