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From: "Josep Pujadas i Jubany" <josep@bellera.cat>
To: current@FreeBSD.org
Date: Thu, 17 Apr 2008 19:26:56 +0200
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Subject: gmirror problem with HP Proliant ML110 G5
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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 16:49:55 mail_2 kernel: GEOM_MIRROR: Device gm0: rebuilding provider 
ad2.
Apr 17 16:50:13 mail_2 kernel: ad2: TIMEOUT - WRITE_DMA retrying (1 retry 
left) LBA=1534720
Apr 17 16:50:46 mail_2 kernel: ad2: TIMEOUT - WRITE_DMA retrying (1 retry 
left) LBA=4563840
...
...
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.

Disks are equal in capactiy:

Apr 17 16:40:48 mail_2 kernel: ad0: 238475MB <Seagate ST3250620NS 3BJP> at 
ata0-master SATA150
Apr 17 16:40:48 mail_2 kernel: ad2: 238475MB <GB0250C8045 HPG1> at ata1-
master SATA150

# atacontrol list

ATA channel 0:
    Master:  ad0 <ST3250620NS/3BJP> Serial ATA v1.0
    Slave:       no device present
ATA channel 1:
    Master:  ad2 <GB0250C8045/HPG1> Serial ATA v1.0
    Slave:       no device present
ATA channel 2:
    Master: acd0 <HL-DT-ST DVD-RAM GSA-H60L/E904> Serial ATA v1.0
    Slave:       no device present
ATA channel 3:
    Master:      no device present
    Slave:       no device present

Any ideas? Thanks,

Josep Pujadas