what happens to pool if ZIL dies on ZFS v14

Jeremy Chadwick freebsd at jdc.parodius.com
Fri Sep 17 16:18:50 UTC 2010


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 at 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 at 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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