Date: Fri, 17 Sep 2010 09:21:54 -0700 From: Freddie Cash <fjwcash@gmail.com> To: freebsd-fs@freebsd.org Subject: Re: what happens to pool if ZIL dies on ZFS v14 Message-ID: <AANLkTi=NX6koyj_xmadrTw8OvgCATPA=EQnTPmAxNGpo@mail.gmail.com> In-Reply-To: <20100917161847.GA58503@icarus.home.lan> References: <AANLkTi=vYVG300nhMjkcLju=kQhBdPJDqyaXR0mG84%2Bp@mail.gmail.com> <4C9385B0.2080909@shatow.net> <AANLkTin0LwQz%2BWi5cBOcHuVqyOz3%2BfFR7YC_=f2L5CyX@mail.gmail.com> <AANLkTinbPK1rNK5hg=t7N=sqFLuh8sNrZT9DFC_ppXWF@mail.gmail.com> <20100917161847.GA58503@icarus.home.lan>
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On Fri, Sep 17, 2010 at 9:18 AM, Jeremy Chadwick <freebsd@jdc.parodius.com> wrote: > On Fri, Sep 17, 2010 at 09:17:11AM -0700, Freddie Cash wrote: >> On Fri, Sep 17, 2010 at 8:35 AM, Gil Vidals <gvidals@gmail.com> wrote: >> > Bryan thank you for the detailed answer. >> > >> > Assuming the ZIL SSD died, what steps would I follow to recover the po= ol? (i >> > hope it is recoverable). >> >> If you are running ZFSv1 through ZFSv18 and your log device dies, your >> pool is dead, gone, unrecoverable, no secret prize, no continues, do >> not pass go, etc, etc, etc. >> >> If you are running ZFSv19 or newer and your log device dies, you can >> remove the dead device and carry on. =C2=A0You will lose any data that w= as >> in the ZIL, but the pool will be intact. > > Given the severity of this predicament, then why is it people are > disabling the ZIL (via vfs.zfs.zil_disable=3D1) ? I'm not sure what you mean by that. This (dead ZIL =3D=3D dead pool) only applies to separate log (slog) device= s. --=20 Freddie Cash fjwcash@gmail.com
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