get 'test WP failed, assume Write Enabled' error on booting

Terence J. Young, D.C. terry.young at journeymhc.org
Wed Oct 19 23:41:56 CDT 2011


Hi,

I am inclined to agree with you.

The warnings come even after I switched each virtual disc to write_back.

We have three of these machines and I get the same warnings on all 
three.  Still, I wonder if there isn't something I can set on the OS 
side to eliminate them.

terry

On 10/19/11 1:18 AM, Jens Dueholm Christensen (JEDC) wrote:
> I recall reading somewhere (probably around a driver for PERC5) that those "errors" are to be expected.
>
> In fact they are not errors, but the expected behaviour of the driver and the controller.
>
> Regards,
> Jens Dueholm Christensen 
>
> -----Original Message-----
> From: linux-poweredge-bounces at dell.com [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Terence J. Young, D.C.
> Sent: Wednesday, October 12, 2011 9:37 PM
> To: linux-poweredge at dell.com
> Subject: get 'test WP failed, assume Write Enabled' error on booting
>
> Hi,
>
> I am using a perc5/i raid card in a poweredge 2950 on Redhat5.6.  I have
> six discs, each mirrored to create three virtual discs.
>
> On bootup, for each disc, i get the following error/message..
>
> Vendor: DELL      Model: PERC 5/i          Rev: 1.00
>      439    Type:   Direct-Access                      ANSI SCSI revision: 05
>      440  SCSI device sda: 487063552 512-byte hdwr sectors (249377 MB)
>      441  sda: test WP failed, assume Write Enabled
>      442  sda: asking for cache data failed
>      443  sda: assuming drive cache: write through
>      444  SCSI device sda: 487063552 512-byte hdwr sectors (249377 MB)
>      445  sda: test WP failed, assume Write Enabled
>      446  sda: asking for cache data failed
>      447  sda: assuming drive cache: write through
>      448   sda: sda1 sda2 sda3 sda4<  sda5 sda6 sda7>
>      449  sd 0:2:0:0: Attached scsi disk sda
>
> This repeats itself for sdb and sdc.
>
> Is there to correct for this?
>
> terry
>
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