ZFS regimen: scrub, scrub, scrub and scrub again.

[Chris Rees]

On 22 January 2013 19:01, Zaphod Beeblebrox <zbeeble at gmail.com> wrote:
> On Tue, Jan 22, 2013 at 4:11 AM, Adam Nowacki <nowakpl at platinum.linux.pl>wrote:
>
>>
>> This is exactly what happened to me. I had a server connected to a failing
>> mains socket. For about a month ZFS reported checksum errors on multiple
>> disks, all fixed thanks to raidz2. Socket failed, completely burned off,
>> UPS woke me up. Replaced the socket, no checksum errors since then.
>>
>> This is what was in my wall: http://tepeserwery.pl/DSC_**0178.JPG<http://tepeserwery.pl/DSC_0178.JPG>
>>
>>
> Damn, son.  That socket is obviously not rated for whatever you used it
> for.  I'm not familiar with European sockets, but any time you smell
> burning in relation electric stuff --- it's just bad.  Here in North
> America, many "cheap" wall sockets are really only meant for lamps or TVs
> and whatnot.  Even cheap contractors put "real" sockets in the kitchen.
> Most "decora" style wall switches are only good for 10 or fewer amps ...
> not 15 or 20 --- although at least their failure mode is reasonable (they
> just stop working).

That is a standard European socket, which are normally rated at 13A.
Also please remember that we use 230V here, so 10A is a high current
for us.  Most of our computers have 5A fuses in them (~1.2 kW).

In Britain, we have seriously anal standards for electrical equipment
mercifully, so there is no such thing here as a 'cheap' socket; all
are fine.  Not sure if one can say the same for Poland.

Chris

> I used to be in peer1 (Canada) at our "151 front" (center of Canadian
> telecoms).  I had been noticing for some time the smell of burnt
> electronics coming from their UPS --- so I moved (this UPS unit would be in
> the 50 to 100 KVA range).  About a year later, it caught fire and had that
> colo down for most of the day.  I had pointed it out to the people who
> worked there --- but they obviously didn't take it seriously enough.
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