On 12/22/10 10:56 AM, Emmanuel Florac wrote: > Le Wed, 22 Dec 2010 11:30:05 -0500 (EST) > Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> écrivait: > >> Is there anyone currently using this in production? > > Yup, lots of people do. Currently supporting 28 such systems (from 20 > to 76 TiB, most are 39.7 TiB). > >> How much ram is needed when you fsck with a many files on such a >> volume? Dave Chinner reported 5.5g or so is needed for ~43TB with no >> inodes. Any recent issues/bugs one needs to be aware of? > > I never had any trouble running xfs_repair on 39.7 TB+ systems with 8 GB > of RAM. > >> Is inode64 recommended on a 64-bit system? > > Sure, however 32 bits clients may scoff sometimes, though it's limited > to some weird programs. > >> Any specific 64-bit tweaks/etc for a large 43TiB FS? >> > > Nothing unusual (inode64,noatime, mkfs with lazy-count enabled, etc). It > should just works. yes, inode64 is recommended for such a large filesystem; lazy-count has been default in mkfs for quite some time. noatime if you really need it, I guess. See also http://xfs.org/index.php/XFS_FAQ#Q:_I_want_to_tune_my_XFS_filesystems_for_.3Csomething.3E which mentions getting your geometry right if it's hardware raid that can't be detected automatically. (maybe we should add inode64 usecases to that too...) -Eric _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
