Todd E. Moore wrote: > I'm working with a group that wants to commit all the way to disk every > single write - flushing or bypassing all the caches each time. The > fsync() call will flush the ZIL. As for the disk's cache, if given the > entire disk, ZFS enables its cache by default. Rather than ZFS having to > issue the flush command to the disk we want to disable this cache and > avoid the step altogether
Then tell your (in my opinion insane) group to pass O_SYNC to open(). That will guarantee writes go to disk without being cached (except by non-volatile cache in a raid controller). If you don't want the ZIL involved, don't configure one for your storage. -- Carson _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
