Re: The chunk size paradox

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On 01/02/2014 01:02 PM, Stan Hoeppner wrote:
On 1/2/2014 10:31 AM, Phillip Susi wrote:
On 1/2/2014 10:41 AM, Stan Hoeppner wrote:
First, there is no such thing as a 4K sector in Linux.  Sectors are
512 bytes.  Filesystem blocks and memory pages are 4K.

Of course there is.  Disks with 4k sectors are becoming more and more
popular.

Please read:  https://en.wikipedia.org/wiki/Advanced_Format

There are no native 4K sector drives on the market.  Linux does not

Untrue.

http://storage.toshiba.eu/cms/en/hdd/hard_disk_drives/product_detail.jsp?productid=452

http://www.seagate.com/www-content/product-content/constellation-fam/constellation-cs/en-us/docs/terascale-hdd-data-sheet-ds1793-1-1306us.pdf

and many others.

512 byte sector native drives are now far less common, with many of the drives being native 4096 bytes with a translation layer for legacy systems that require 512 bytes. This is infamous for wreaking havoc with alignment.


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