Brian May <brian@microcomaustralia.com.au> wrote:
On 11 April 2012 10:00, Trent W. Buck <trentbuck@gmail.com> wrote:
Users that expect to be able to just unplug a stick and walk away at any time DESERVE to have that expectation violated.
Same thing can happen, if, say, the power unexpectedly failed.
Yes, but then one can't reasonably expect everything to be intact after the power returns either. At least with fsync(), anything saved shortly before the power failure should be on the medium, along with any associated metadata changes, but one can expect a corrupt file system nevertheless.
The days you can assume that Unix servers are stored in machine rooms with guaranteed 100% reliable power feeds (e.g. using UPS) are over.
Even in the city - have had a number of short power "glitches" lately.
As have I out in a Melbourne suburb, but the UPS took care of it. I recently left home with my laptop, logged into my home system via the laptop with ssh and received a message stating that power had just returned. The messages from apcupsd and the system logs showed that a half-hour power outage had taken place shortly after I left.