On Thu, May 13, 2010 at 02:14:32PM -0400, Phillip Susi wrote:
> On 5/13/2010 6:42 AM, Karel Zak wrote:
> > I'm not sure if link blockdev(8) against libblkid is a good idea.
> > From my point of view is blockdev(8) simple wrapper for ioctls.
> >
> > (I'm not happy with another new command, so suggestions are welcomed.)
>
> If blockdev is a wrapper for block device ioctls, and blkid is a simple
> interface to libblkid, then it seems a new feature in libblkid should be
> exported by blkid.
Yes, it's probably the best compromise.
Implemented & committed:
-i Display I/O Limits (aka I/O topology) information. The ’export’
output format is automatically enabled.
for example:
# blkid -i /dev/sdb
MINIMUM_IO_SIZE=512
OPTIMAL_IO_SIZE=32768
PHYSICAL_SECTOR_SIZE=512
LOGICAL_SECTOR_SIZE=512
The same thing without libblkid (already released in 2.17):
# blockdev --getiomin --getioopt --getpbsz --getss /dev/sdb
512
32768
512
512
So we have two ways (first is portable and second is fast).
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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