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Date:      Thu, 06 Sep 2007 14:39:16 +0200
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: Disk errors when copying
Message-ID:  <fbosdu$b00$1@sea.gmane.org>
In-Reply-To: <20070905220310.6EF69258F8C@macpro.inf.ed.ac.uk>
References:  <20070905220310.6EF69258F8C@macpro.inf.ed.ac.uk>

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Richard Tobin wrote:
> When copy between disks (ad10 ->ad8), I get errors:
>=20
> ad10: WARNING - READ_DMA48 UDMA ICRC error (retrying request) LBA=3D435=
128800
> ad10: FAILURE - READ_DMA48 status=3D51<READY,DSC,ERROR> error=3D10<NID_=
NOT_FOUND> LBA=3D435128800
> g_vfs_done():ad10s2g[READ(offset=3D175562145792, length=3D131072)]error=
 =3D 5
>=20
> I don't get these errors just reading the data from ad10.  Is this
> some kind of system error rather than a bad disk?  Is it a known proble=
m?

It doesn't match any recent known problem - it looks like a disk error.=20
You might want to pinpoint the file which causes it and skip that file.=20
Use sysutils/smartmontools to test and monitor the drive.


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