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Date:      Fri, 18 Apr 2008 10:56:47 +0200
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-current@freebsd.org
Subject:   Re: gmirror problem with HP Proliant ML110 G5
Message-ID:  <fu9nof$a6r$1@ger.gmane.org>
In-Reply-To: <20080417171439.M22551@bellera.cat>
References:  <20080417171439.M22551@bellera.cat>

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Josep Pujadas i Jubany wrote:
> Hello!
>=20
> Two weeks ago I installed FreeBSD 7.0 in a new HP Proliant ML110 G5 mac=
hine=20
> and I configured ad0 for using gmirror, waiting for a second disk.
>=20
> I just added a second hard disk arrived today from HP ...
>=20
> # gmirror insert gm0 /dev/ad2
>=20
> I'm having DMA errors:

> Apr 17 17:39:28 mail_2 kernel: ad2: TIMEOUT - WRITE_DMA retrying (1 ret=
ry=20
> left) LBA=3D268281088
> Apr 17 17:39:46 mail_2 kernel: ad2: TIMEOUT - WRITE_DMA48 retrying (1 r=
etry=20
> left) LBA=3D269601536
> Apr 17 17:39:46 mail_2 kernel: ad2: FAILURE - WRITE_DMA48=20
> status=3D51<READY,DSC,ERROR> error=3D10<NID_NOT_FOUND> LBA=3D269601536
> Apr 17 17:39:46 mail_2 kernel: GEOM_MIRROR: Synchronization request fai=
led=20
> (error=3D5). ad2[WRITE(offset=3D138035986432, length=3D131072)]
> Apr 17 17:39:46 mail_2 kernel: GEOM_MIRROR: Device gm0: provider ad2=20
> disconnected.
> Apr 17 17:39:46 mail_2 kernel: GEOM_MIRROR: Device gm0: rebuilding prov=
ider=20
> 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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