As far as I know from the online docs, this can be an issue if the "no-battery" controller has his own cache enabled. I totally disabled caching on the controller, on each disk. This way, I'm sure that when zfs issue a sync request, data is nowhere else but the disks. Correct me if I'm wrong.................................................... ---------------------------------------------------------------------------------- Da: Udo Grabowski (IMK) A: Gabriele Bulfon Data: 27 novembre 2012 14.46.27 CET Oggetto: Re: [discuss] Again: illumos based ZFS storage failure On 27/11/2012 14:36, Gabriele Bulfon wrote: I choosed not to use WTB caching, because I have no battery on this controller, and configured zfs to have zfs:zfs_nocacheflush=1. But shouldn't that be zfs:zfs_nocacheflush=0 without battery ? You risk to loose your pool due to power loss. -- Dr.Udo Grabowski Inst.f.Meteorology a.Climate Research IMK-ASF-SAT www-imk.fzk.de/asf/sat/grabowski/ www.imk-asf.kit.edu/english/sat.php KIT - Karlsruhe Institute of Technology http://www.kit.edu Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026
------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
