Date: Fri, 3 Sep 2010 12:10:40 -0600 From: "Jason J. W. Williams" <jasonjwwilliams@gmail.com> To: Olivier Smedts <olivier@gid0.org> Cc: Alexander Leidinger <Alexander@leidinger.net>, freebsd-current@freebsd.org Subject: Re: ZFS Cache & Log Device Failure Handling Message-ID: <AANLkTi=st99i_MfgGQ7wwrDkEC3AtS64tXdHPp8ABX49@mail.gmail.com> In-Reply-To: <AANLkTimebtL=-HSmdZaxFn0_RJQU6kU591y4fq9k2tiq@mail.gmail.com> References: <AANLkTinwY1yr-shSBd26tppwNuDVkt6%2BYRKvjyzPkkMu@mail.gmail.com> <20100903120758.58155gvs7me78e80@webmail.leidinger.net> <AANLkTimebtL=-HSmdZaxFn0_RJQU6kU591y4fq9k2tiq@mail.gmail.com>
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Hi Olivier, Removal came around 18, but at least in OpenSolaris failure of the device (and it's replacement) were handled from day one of the dedicated ZIL feature. -J On Fri, Sep 3, 2010 at 6:18 AM, Olivier Smedts <olivier@gid0.org> wrote: > 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. =A0Don't overdo it= . >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0-- Lao Tsu >> >> http://www.Leidinger.net =A0 =A0Alexander @ Leidinger.net: PGP ID =3D B0= 063FE7 >> http://www.FreeBSD.org =A0 =A0 =A0 netchild @ FreeBSD.org =A0: PGP ID = =3D 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.or= g" >> > > > > -- > Olivier Smedts=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0= =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=A0 _ > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0 ASCII ribbon campaign ( ) > e-mail: olivier@gid0.org=A0 =A0 =A0 =A0 - against HTML email & vCards=A0 = X > www: http://www.gid0.org=A0 =A0 - against proprietary attachments / \ > > =A0 "Il y a seulement 10 sortes de gens dans le monde : > =A0 ceux qui comprennent le binaire, > =A0 et ceux qui ne le comprennent pas." >
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