On Tue, Mar 06, 2007 at 06:36:09AM -0800, Ulrich Drepper wrote: > Christoph Hellwig wrote: > > fallocate with the whence argument and flags is already quite complicated, > > I'd rather have another call for placement decisions, that would > > be called on an fd to do placement decissions for any further allocations > > (prealloc, write, etc) > > Yes, posix_fallocate shouldn't be made more complicated. But I don't > understand why requesting linear layout of the blocks should be an > option. It's always an advantage if the blocks requested this way are > linear on disk. So, the kernel should always do its best to make this > happen, without needing an additional option.
There are HPC workloads where you have multi writers on multiple machines that write to different parts of a file. You preferably want each of those regions in separate allocation groups. (Or tell the customers to use separate files for the regions..) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
