On 03/08/2010 23:20, Ross Walker wrote:
Nothing has been violated here. Look for WCE flag in COMSTAR where you can control how a given zvol should behave (synchronous or asynchronous). Additionally in recent build you have zfs set sync={disabled|default|always} which also works with zvols. So you do have a control over how it is supposed to behave and to make it nice it is even on per zvol basis. It is just that the default is synchronous.Ah, ok, my experience has been with Solaris and the iscsitgt which, correct me if I am wrong, is still synchronous only.
I don't remember if it offered or not an ability to manipulate zvol's WCE flag but if it didn't then you can do it anyway as it is a zvol property. For an example see http://milek.blogspot.com/2010/02/zvols-write-cache.html
-- Robert Milkowski http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
