On 05/06/2012 07:37 AM, Dave Chinner wrote: > On Sat, May 05, 2012 at 11:07:09PM +0800, Tao Ma wrote: >> From: Tao Ma <boyu.mt@xxxxxxxxxx> >> >> In my test with ext4, 275 can't pass because ext4 >> can create a 8k file in the end not like what xfs >> does. So make this test case xfs only for now. > > It's not an XFS specific test - it's a test that is supposed to test > POSIX write behaviour. i.e. if the filesystem is full, and then you > free 4k of space, then an 8k write should only be able to write 4k, > yes? Yes, but it doesn't work as expected for ext4. > > So doesn't a failure on ext4 indicate that there's something wrong > with ext4 (either it's ENOSPC detection or the short write > handling), not the test? Actually in my test, ext4 can create the file with 8K file size, not a short write. I haven't looked into it yet. But AFAICS, if we have an ext4 volume with 8k cluster size, a 4k file can occupy a 8k cluster and the final write of 8k will succeed instead of the short write. Thanks Tao _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
