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Re: LWN article: 4K disk sectors

To: xfs@xxxxxxxxxxx
Subject: Re: LWN article: 4K disk sectors
From: Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx>
Date: Thu, 12 Mar 2009 14:52:16 +0100
In-reply-to: <49B909CC.7080402@xxxxxxxxxxx>
Organization: it-management http://it-management.at
References: <200903121258.51497@xxxxxx> <49B909CC.7080402@xxxxxxxxxxx>
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On Donnerstag 12 März 2009 Eric Sandeen wrote:
> Take a look at the mkfs.xfs man page:
>
>        -s sector_size
>               This option specifies the fundamental  sector  size  of
>               the filesystem.  The sector_size is specified either as
>               a value in bytes with size=value or as a base two loga-
>               rithm value with log=value.  The default sector_size is
>               512 bytes. The minimum value for sector  size  is  512;
>               the  maximum is 32768 (32 KiB). The sector_size must be
>               a power of 2 size and cannot be made  larger  than  the
>               filesystem block size.

Ugh, I felt so good this morning, until you responded ... ;-)

I thought that it's a limitation of the Linux kernel in more parts than 
just the filesystem (like block cache), that sector sizes must be 512B. 
If I had a 4K drive, would that be usable with XFS already?

mfg zmi
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