Is btrfs ready to be default fs in F17 ?

Mikkel L. Ellertson mellertson at
Wed Nov 9 01:43:55 UTC 2011

Hash: SHA1

On 11/07/2011 05:56 PM, Ed Greshko wrote:
> On 11/07/2011 11:36 PM, Fernando Cassia wrote:
>> On Mon, Nov 7, 2011 at 12:23, Reindl Harald <h.reindl at
>> <mailto:h.reindl at>> wrote:
>>     why in the world do you or anybody believe
>>     that this will repair all sort of potentially fs-errors of real life
>>     like power lost in the wrong moment?
>> do you live in a war zone? the forest? hurricane zone? or any other
>> place where the power goes out unexpectedly all the time and/or a
>> strange place where power supplies blow out out of the blue? (as has
>> been hinted earlier in this thread)
> You don't have to live in a war zone to have a power supply fail.  You
> don't have to live in a hurricane zone to have a thunderstorm knock out
> power. 
You might want to take a look at what happened in the north-eastern
part of the United States not long ago. An early snow, while the
trees still had their leaves, knocked out power all over. Some
people did not get power restored for a week or more. I wold not
consider that a war zone, though I guess you could say the problem
came out out of the blue...

> We live in a city.  Just 2 weeks ago a building 50 meters away from our
> had a fire.  While putting out the fire the fire department determined
> it safer for them to cut power to the area.  They did so without warning
> The problem is that many people take their electric power for granted. 
> Much like you, they think they will never lose power so they don't

Do not forget about construction accidents taking out the power.
Backhoes do not just cut fiber optic cables... I saw a dump truck
take out a power line when the driver did not lower the dump box
before starting to drive away. And you never want to see what
happens when a crane hits a high voltage line.
>> I don´t know about you but I don´t use to pull the plug from the ac
>> socket on my desktops (which have an UPS anyway) or remove the battery
>> on my laptop while working...
Dumb question - when was the last time you tested your UPS? I mean a
real test, where you pull the plug on the UPS, and see if the system
responds as it should. Does the system do a full shutdown before the
power runs out?

You can NOT count on the UPS status display or reports from a smart
UPS if you have not had a power outage for a while. I have a UPS
here that reported everything was fine, and that it could provide 1
hour of power at the current load level. Guess what - it shut down
because of low battery less then a minute after pulling the plug.

- -- 

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for thou art crunchy and taste good with Ketchup!
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