-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/06/12 17:06, Bob Friesenhahn wrote: > On Thu, 7 Jun 2012, Jesus Cea wrote: >> >> I always wondered WHY. What is the point of keeping separate ZILs >> (one per dataset) when having a discrete LOG device. >> >> Any idea?. > > The implementation is obviously very much simplified by using > discrete contiguous ZILs. Otherwise there is a lot more complexity > and activity to track which I/Os have completed. With the current > approach, only one write is necessary to record that a batch of > writes have been committed to the pool.
Uhm.... and how is it done when you don't have a LOG device?. That is, when the ZILs are in the harddisk?. There moving the disk arm should be something to avoid/reduce. - -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ j...@jcea.es - http://www.jcea.es/ _/_/ _/_/ _/_/ _/_/ _/_/ jabber / xmpp:j...@jabber.org _/_/ _/_/ _/_/_/_/_/ . _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQCVAwUBT9DFhZlgi5GaxT1NAQJMlgP/ackJX71mAhehXut2SngyQMjyxVDXddde e3R3RM9uk3dIPxmJi13OiNobleBbwcT90VTqeKaXUfOohGqwn9oxx+Ofnie1VMXw bz6ecmXrXdKXxufu9MLKIBS9gAxhTjEaxYplTPWcn6FMdO/3aNvT1k2pRU4XhL+Q 5b3bld5v5wU= =hPoh -----END PGP SIGNATURE----- _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss