assuming drive cache: write through

[Greg Dickie]

Thanks, so there is no performance hit?

Greg

On Wed, 2006-09-13 at 11:05 -0500, Patrick_Boyd at dell.com wrote:
> http://lists.us.dell.com/fom-serve/cache/110.html
> 
> SAS is also made by LSI so the drivers bahave the same. 
> 
> -----Original Message-----
> From: linux-poweredge-bounces at dell.com
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Greg Dickie
> Sent: Wednesday, September 13, 2006 10:49 AM
> To: linux-poweredge-Lists
> Subject: assuming drive cache: write through
> 
> 
> Hi,
> 
>   On my PE2900 with megaraid_sas I have the VDISKS set for write-back
> caching. Without getting into a philosophical discussion of why thats
> bad, how come the kernel pops up with:
> 
> SCSI device sdc: 1754529792 512-byte hdwr sectors (898319 MB)
> sdc: test WP failed, assume Write Enabled
> sdc: asking for cache data failed
> sdc: assuming drive cache: write through
> 
> 
> Kernel is 2.6.17.11-ish
> 
> Thanks alot,
> Greg
> 
> 
> 
> --
> Greg Dickie
> just a guy
> Maximum Throughput
> 
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-- 
Greg Dickie
just a guy
Maximum Throughput