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Date: Tue, 22 Mar 2016 21:49:19 -0600
To: bob prohaska <fbsd@www.zefox.net>, Warner Losh <imp@bsdimp.com>
From: Brett Glass <brett@lariat.net>
Subject: Re: Effect of partitioning on wear-leveling
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At 09:34 PM 3/21/2016, bob prohaska wrote:

>How do modern flash devices report end of life? Do problems show up in error
>logs, or does the device simply refuse to work with no warning?

Depends upon the device. SSDs will give you a warning via SMART; they will
begin to retire blocks and swap in reserved blocks. Simpler devices 
such as memory
cards and USB sticks will simply die. I use SSDs in 
mission-critical applications,
so that I have at least a fighting chance of replacing them before 
there's an outage.

--Brett Glass