Linux and 4K disk sectors
Posted Mar 15, 2009 17:52 UTC (Sun) by giraffedata
In reply to: Linux and 4K disk sectors
Parent article: Linux and 4K disk sectors
Your average user-space program (be it 'cat' or openoffice) should let the filesystem do what it does best and ignore the underlying drive issues.
That's good, though the filesystem driver should also let the device driver do what it does best and ignore the underlying drive implementation. We learned a long time ago that there's value in having a generic block device interface, e.g. such that a filesystem driver doesn't concern itself with tracks and cylinders.
But I'm inferring from your silence that there will not be a way for the user to choose the alignment in the drive. That seems disastrous, since it means that at the very least everyone will need new device drivers to use the new drives with good performance (or maybe the RMW won't really be that noticeable?).
It would be a whole lot easier if the user could just get a special program to set the drive to the alignment his application requires and then use the drive with existing systems. I'd even say jumper-selectable, but I hear jumpers cost a fortune.
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