Confusing smartd messages

[Stefan Blachmann]

Another problem issue is that flash memories also exhibit the charge
drain problem.
They cannot be read indefinitely without occasional rewrite, as every
read drains a minuscule amount of the charge.

I often wished I knew of some OS/driver function/mechanism which can
rewrite respective refresh media on a mounted+running system and could
be, for example, run via cron.

Such would not only be very useful to fix pending sectors without
stopping a running machine, but also for keeping embedded machines'
flash memories reliably charged over the years.



On 7/5/18, Wojciech Puchar <wojtek at puchar.net> wrote:
>>> okay.  What's the recommended action at this point?     -- George
>>
>> In my experience it is begin of disk death, even if overall status is
>> PASSED. It could work for month or may be half a year after first
>> Offline_Uncorrectable is detected (it depends on load), but you best bet
>> to replace it ASAP and throw away.
> well my disk had this and live happily for 3 years.
>
> It JUST means that some sectors are unreadable which may be a reason that
> at some some write got wrong because of hardware problem. But this problem
> may be - and possibly were - powerdown while writing, or power spike.
>
> the media itself could be fine. the best action in such case is to force
> rewrite whole drive with some data.
>
> with gmirror it is as easy as first checking second drive for no errors,
> then forcing remirror.
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