Re: Intel X25-E running Linux using XFS

[Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>]

On Fri, 12 Dec 2008, Pavel Machek wrote:

> Hi!
>
> > Due to the 100k write cycle lifetime, I will not be performing any more
> > benchmarks on the SSD itself, such benchmarks are available on
> > techreport.com but just wanted to send out the smart data for the
> > smartmontools list and point out it is working with linux+ich7+xfs.
> >
> > Overall, whenever I do anything now its just like the entire machine is
> > sitting in a ramdisk (similar when you boot knoppix and load to ramdisk).
> >
> > The techreport benchmarks are here:
> > http://techreport.com/articles.x/15931
>
> Actually I'd like to know... how does it behave during powerfails
> while it is being written to?
>
> Flashes I seen (USB / SD) developed bad sectors in that case, and
> ext2/ext3 can't handle that. (And I don't think xfs can handle that
> either).

I have a UPS for all of my machines, so that will not be a problem in my 
case.  I do not wish to trash a $720 SSD or my current install, if someone 
else wants to try feel free though :)

With barriers, presumably it would be safe-- but as always, a UPS/and 
barriers and/or RAID, there is no excuse not to have regular backups 
incase of a failure at any time..

I do recall however one instance where there was an apt-get dist-upgrade 
going and the power was cut to a machine on purpose (before/not 
using barriers) and suffice to say-- it got mucked/suffered many corruptions
all over the place.

Justin.