Date: Fri, 17 Sep 2010 09:18:47 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Freddie Cash <fjwcash@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: what happens to pool if ZIL dies on ZFS v14 Message-ID: <20100917161847.GA58503@icarus.home.lan> In-Reply-To: <AANLkTinbPK1rNK5hg=t7N=sqFLuh8sNrZT9DFC_ppXWF@mail.gmail.com> 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>
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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 pool? (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. You will lose any data that was > 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=1) ? -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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