Jason L Tibbitts III wrote:
>
> I had some problems when I originally set up my box (XFS/RedHat 1.0, 3ware
> Escalalade 6800, 8xIBM 76GB disks). The array was horribly, incredibly
> slow. It turns out that for some reason it needed to do a full rebuild.
> This doesn't show up as activity on the external activity LED and since
> 3ware doesn't provide any command line tools the only way to see that it's
> rebuilding is to run their stupid web-based thing.
>
I did see that behaviour too, but it was not the case.
the 3dm 3ware daemon reportsed ready (not rebuilding).
> But after six or so hours the speed went back up to something reasonable;
> hdparm reports around 51MB/sec reads (versus less than 1MB/sec before).
>
I am now thinking that is is not related to the 3ware card nor to xfs.
Even with de-activating the 3ware driver ans accessing the system disk only
the memory access measured by hdparm tops at 100MB/s.
It is not related to xfs at all, and does not depend on the following kernels
2.4.2-2 (Redhat 7.1) 2.4.5ac13 2.4.2-2_SGI_xfs and 2.4.5_xfs_1.0.1.
When sharing the system disk on 3 different interfaces (eepro100/ 2x 3c59x)
and writing to the rocky at the same time ~1-2GB, the two 3com NIC lose
random packets..
Thank you for your experience,
Tru
--
Dr Tru Huynh | Bioinformatique Structurale
mailto:tru@xxxxxxxxxx | tel/fax +33 1 45 68 87 37/19
Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15 France
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