On Oct 27, 2010, at 8:08 PM, Kei Saito wrote: > Hi! > > i'm interested in zil's behavior.
Start here: http://blogs.sun.com/perrin/entry/the_lumberjack > > it's my understanding that zil is used only when > synchronous(o_sync,o_dsync & directio) write io request. > then zil have written contents that system call is used by zil replay > when used by crashed. > is this correct? > It seems a large amount of io for system call. > I think maybe the real data is being written in zil. Yes, real data is written in the ZIL. -- richard -- USENIX LISA '10 Conference, November 7-12, San Jose, CA ZFS and performance consulting http://www.RichardElling.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
