Michael Cronenworth wrote: > -------- Original Message -------- > Subject: Things to do this week instead of arguing about mixers > From: Eric Sandeen <sandeen@xxxxxxxxxx> > To: Development discussions related to Fedora Core > <fedora-devel-list@xxxxxxxxxx> > Date: 04/27/2009 02:10 PM > >> Now that we have ext4 as the new default filesystem, it'd be nice if we >> can get more applications to take advantage of some of the features. >> > > Filesystems should be transparent to programs 99% of the time in my > humble little opinion. If ext4 depends on having falloc() calls then > ext4 has a bug. File a bug on it. > > XFS, btrfs, or any file system that's better than the extX series don't > seem to have issues with requiring this function call. You're missing the point here, I think. Try downloading a large (multi-gigabyte) torrent on ext4 or xfs or btrfs; see what the resulting file layout looks like if your client does not preallocate. Now use a client that preallocates the space and try again. Calling fallocate() first for the full file size will help on all these filesystems (well, TBH, I have not tested it on btrfs). If there are well-defined interfaces to give hints to the filesystem about the ultimate state of a file, it's a nice feature, not a bug. Sure, filesystems should do the best they can in the absence of hints, but performing well (or better) _with_ a hint is not indicative of a bug. -Eric -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
