gmirror problem with HP Proliant ML110 G5

[Ivan Voras]

Josep Pujadas i Jubany wrote:
> Hello!
> 
> Two weeks ago I installed FreeBSD 7.0 in a new HP Proliant ML110 G5 machine 
> and I configured ad0 for using gmirror, waiting for a second disk.
> 
> I just added a second hard disk arrived today from HP ...
> 
> # gmirror insert gm0 /dev/ad2
> 
> I'm having DMA errors:

> Apr 17 17:39:28 mail_2 kernel: ad2: TIMEOUT - WRITE_DMA retrying (1 retry 
> left) LBA=268281088
> Apr 17 17:39:46 mail_2 kernel: ad2: TIMEOUT - WRITE_DMA48 retrying (1 retry 
> left) LBA=269601536
> Apr 17 17:39:46 mail_2 kernel: ad2: FAILURE - WRITE_DMA48 
> status=51<READY,DSC,ERROR> error=10<NID_NOT_FOUND> LBA=269601536
> Apr 17 17:39:46 mail_2 kernel: GEOM_MIRROR: Synchronization request failed 
> (error=5). ad2[WRITE(offset=138035986432, length=131072)]
> Apr 17 17:39:46 mail_2 kernel: GEOM_MIRROR: Device gm0: provider ad2 
> disconnected.
> Apr 17 17:39:46 mail_2 kernel: GEOM_MIRROR: Device gm0: rebuilding provider 
> ad2 stopped.

It looks like a hardware failure, either:
- bad drive
- bad cables
- bad or insufficiently powerful power supply

What controller are you using?

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