On the nfsv4 list it was recently discussed how atomic / transaction xattr updates are. It turns out none of that seems documented on the syscall level, but for XFS we have an odd inconsistancy in that attr updates generally are atomic and logged, except when we go out to remote attributes in xfs_attr_rmtval_set, in which case attr updates are no logged, and we do synchronous writes instead. Besides the weird semantic difference that is impossible to explain to users performance will also generally be bad with a synchronous buffer write. Is there any good reason to not log the buffer for the remote attributes? Given that attribute are limited to 64kB it's not like the value is larger than large directory blocks that we already support. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
