> Is that what "sync" means in Linux? A sync write is one in which the application blocks until the OS acks that the write has been committed to disk. An async write is given to the OS, and the OS is permitted to buffer the write to disk at its own discretion. Meaning the async write function call returns sooner, and the application is free to continue doing other stuff, including issuing more writes.
Async writes are faster from the point of view of the application. But sync writes are done by applications which need to satisfy a race condition for the sake of internal consistency. Applications which need to know their next commands will not begin until after the previous sync write was committed to disk. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
