On Tue, Jan 12, 2010 at 01:15:49PM +0100, Michal Novotny wrote: > I don't really know if I see your point but the thing here is that there > was no way to open a file directly (ie. using O_DIRECT). The direct > write support has been added only to make it possible to use both read > and write directly. The main reason to create this patch was to add > direct read support and flush capability won't help me at all. I am > working in Red Hat, Virtualization team on Xen so I am really not that > much familiar with file systems but what I needed was an option to read > the data directly (using O_DIRECT) in e2fsprogs. One bug was about > pygrub (Python version of GRUB of Xen PV guests that is internally using > e2fsprogs functionality to access data on ext2/3/4 partition to boot the > PV guests) uses outdated/cached data so some modifications were > necessary to open everything directly... So to get things staigt: you're using e2fsprogs to manipulate a life filesystem and thing using O_DIRECT saves your ass? I think you need to rething your model of operation fundamentally in that case. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
