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Date: Wed, 28 Sep 2011 00:48:46 +0530 From: Arun <engineerarun@...il.com> To: "Martin K. Petersen" <martin.petersen@...cle.com> Cc: Joshua Scoggins <theoretically.x64@...il.com>, Mike Snitzer <snitzer@...il.com>, Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org Subject: Re: Detection of Advanced Format drives Thanks for confirming "hdparm -I" Martin... I guessed it would resolve my detection problem but was not quite sure as I'm still waiting to get the drive and had some time to get my hands dirty :) Thanks everyone for taking interest in my problem. Regards, Arun On Wed, Sep 28, 2011 at 00:29, Martin K. Petersen <martin.petersen@...cle.com> wrote: >>>>>> "Arun" == Arun <engineerarun@...il.com> writes: > > Arun> Should I suppose that it is an already available piece of > Arun> information to the userland? > > Yes, in the sysfs locations Mike mentioned: > > /sys/block/foo/queue/physical_block_size > > Or you can use the BLKPBSZGET ioctl. > > > Arun> Or do I need to modify the hdparm/fdisk code to get this piece of > Arun> info? > > Recent hdparm versions will also report the right thing: > > # hdparm -I /dev/sdc | grep Sector > Logical Sector size: 512 bytes > Physical Sector size: 4096 bytes > Logical Sector-0 offset: 512 bytes > > -- > Martin K. Petersen Oracle Linux Engineering > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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