zfs: how to find out when a disk failed

[Dr. Nikolaus Klepp]

Am Dienstag, 15. November 2016 schrieb Robison, Dave:
> On 11/15/2016 06:37, Dr. Nikolaus Klepp wrote:
> > Hi all!
> >
> > I have a server with a zfs raid-z1 (3 disks). One disk failed/was removed some time ago and was not replaced till now.
> >
> > Is there a way to find out when the  disk failed/was removed?
> >
> > Nik
> >
> >
> 
> /var/log/messages perhaps?
> 
> or dmesg?


Sorry, my description was incomplete: the server was rebooted ~ 32 days ago.
/var/run/dmesg.boot says, the missing disk was already missing at that time. 
/var/log/messages to /var/log/messages.4.bz2 .4.bz2 are present, but the first entry is from ~ 12 days ago. 
There are no logfiles in the archive that are older than 30 days. 

"zpool history -il" gives nor hint that the pool it's degraded.

Nik

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