Thank you all. Now I find a patch which can extend ext3 subdirectory limit. http://osdir.com/ml/file-systems.ext2.devel/2004-12/msg00026.html ======= 2008-03-19 06:56:58 您在来信中写道：======= >On Mar 17, 2008 09:32 -0400, Theodore Ts'o wrote: >> On Mon, Mar 17, 2008 at 03:40:36PM +0800, liuyue wrote: >> > Theodore Tso, >> > >> > In 64bit system, directory size can not be bigger than 2GB? >> >> No, because the high 32-bits for i_size are overloaded to store the >> directory creation acl. > >I think we should change the code (kernel and e2fsprogs) to allow >i_size_high for directories also. > >> In practice, you really don't want to have a directory that huge >> anyway. Iterating through it all with readdir() gets horribly slow, >> and applications that try do anything with really huge directories >> would be well advised to use a database, because they will get *much* >> better performance that way.... > >Actually, for many HPC applications they never do readdir at all. >The job creates 1 file/process and always uses a predefined filename >like {job}-{timestamp}-{process} that it will directly look up. > >Cheers, Andreas >-- >Andreas Dilger >Sr. Staff Engineer, Lustre Group >Sun Microsystems of Canada, Inc. > > > = = = = = = = = = = = = = = = = = = = = 致 礼！ liuyue liuyue@xxxxxxxxxx 2008-03-20 _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
