Re: RHEL/Centos6 handling disks w/4k sectors?

[John R Pierce <pierce@xxxxxxxxxxxx>]

On 02/06/11 1:14 PM, Les Mikesell wrote:
> Does anyone know if 4k sectors will be handled better by the kernel in Centos6?
>    I'd like to copy backups to a 750Gb laptop type drive for offsite storage but
> the best write speed I can get is about 8MB/sec even with dd to the raw disk
> which shouldn't have an issue with partition alignment.


what are you using on dd as the blocksize (bs=) ?   should be a fairly 
large multiple of 4K, like 1048576 (eg, 1MB writes).

I get 50-80MB/sec writes to a laptop drive hooked up to my windows 
desktop when I'm cloning said laptop drives.   if you're only seeing 
8MB, something is very wrong.


_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos