Date: Fri, 3 Sep 2010 14:18:51 +0200 From: Olivier Smedts <olivier@gid0.org> To: Alexander Leidinger <Alexander@leidinger.net> Cc: "Jason J. W. Williams" <jasonjwwilliams@gmail.com>, freebsd-current@freebsd.org Subject: Re: ZFS Cache & Log Device Failure Handling Message-ID: <AANLkTimebtL=-HSmdZaxFn0_RJQU6kU591y4fq9k2tiq@mail.gmail.com> In-Reply-To: <20100903120758.58155gvs7me78e80@webmail.leidinger.net> References: <AANLkTinwY1yr-shSBd26tppwNuDVkt6%2BYRKvjyzPkkMu@mail.gmail.com> <20100903120758.58155gvs7me78e80@webmail.leidinger.net>
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2010/9/3 Alexander Leidinger <Alexander@leidinger.net>: > Quoting "Jason J. W. Williams" <jasonjwwilliams@gmail.com> (from Thu, 2 Sep > 2010 13:30:51 -0600): > >> How well does ZFS on FreeBSD handle a dying/wedged log and/or cache >> device? OpenSolaris handles this pretty well in my experience and will >> fail through relatively quickly. But this tends to rely on FMA. Thank >> you in advance. > > No problem for the cache device. I have an USB memory stick as a cache > device, and if I just remove it during operation, the system handles the > situation. If you connect it again, you need to remove/readd it via zfs > commands. I've got the same setup and just have to "online" the usb key after boot. As for the zil/log device, I think it should be supported in the upcoming ZFS v28 patch (maybe you can give it a try, see pjd's mail) because zil removal was introduced in a zpool version after v14/15 (what's in 8-STABLE and 9-CURRENT). > > I do not use a log device. > > Bye, > Alexander. > > -- > Govern a great nation as you would cook a small fish. Don't overdo it. > -- Lao Tsu > > http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 > http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137 > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > -- Olivier Smedts _ ASCII ribbon campaign ( ) e-mail: olivier@gid0.org - against HTML email & vCards X www: http://www.gid0.org - against proprietary attachments / \ "Il y a seulement 10 sortes de gens dans le monde : ceux qui comprennent le binaire, et ceux qui ne le comprennent pas."help
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