Re: Linux software RAID 5 recovery from a 1 TB Terastation

From: Scott Johnson <scott.a.johnson@gmail.com>
Date: Wed May 11 2005 - 20:01:12 AKDT

I'm sure this isn't it, but are you positive the hardware you moved
the array to has support for large HD's (137GB+)?

On 5/11/05, Matt Macander <mmacander@abrinc.com> wrote:
> We have a 1 TB Terastation from Buffalo Tech with a RAID 5 array, that
> will no longer boot after a botched firmware upgrade.
>=20
> The four 250 GB hard drives appear to be fine and I think that they are
> a standard Linux software RAID array (formatted with XFS). I am trying
> to mount the RAID array on a different computer so I can pull some data
> off before sending the unit back to get replaced.
>=20
> I tried hooking them up to another computer and booting into the latest
> version of Knoppix. Unfortunately, the full capacity of the drives
> doesn't seem to be available and the RAID array cannot be reconstructed..=
.
>=20
> hde: max request size 128 KiB
> hde: 488397168 sectors (250059 MB) w/ 2048 KiB cache, CHS=3D30401/255/63
> attempt to access beyond end of device
> hde: rw=3D0, want=3D1460886144, limit=3D486962282
> I/O error in filesystem ("hde3") meta-data deve hde3 blok
> ("XFS_read_buf") error 5 buf count 4096
> ...
> and so on for drives hdf, hdg, and hdh
>=20
> I could find the root partition hde1 from Knoppix and the raid config
> file mdadm.conf:
> ARRAY /dev/md1 level=3Draid5 num-devices=3D4 UUID=3Da39b74nb:...
> devices=3D/dev/hda3,/dev/hdc3,/dev/hde3,/dev/hdg3
>=20
> I think the problem may be the very large size of the drives, though I'm
> not sure how to get around it. Any ideas?
>=20
> Matt
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>=20
>=20

--=20
Scott Johnson
scott.a.johnson@gmail.com
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Received on Wed May 11 20:01:09 2005

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