zero size file after power failure with kernel 2.6.30.5

[Michael Monnerie <michael.monnerie@is.it-management.at>]

I have /home mounted like this:
/dev/sda3 on /disks/work1 type xfs 
(rw,noatime,logbufs=8,logbsize=256k,attr2,barrier,largeio,swalloc)

Hardware: onboard SATA with a single WD VelociRaptor drive.

My power supply melted and so I had a power fail and a sudden death 
crash.
( So please remember: even when you have a UPS, your power can fail ! )

After replacing the part, I had almost no isse with my KDE desktop. In 
earlier XFS releases, I constantly lost several config files all 
truncated to 0 length or at some point only contained NULLs on such 
occasions. So the situation improved a lot.

But almost is not good enough: Exactly my kmail config file was 0 sized 
- obviously: at least when I started kmail, it started fresh without any 
accounts or config, but once I exited kmail the config was created with 
the default values and about 12KB size, while my config has >200KB.

Shouldn't it be that this doesn't happen anymore? I'd love to be in a 
position where I really can rely on a crash not trashing any of my files 
anymore. I used to have reiserfs previously, and never, not a single 
time despite many crashes, did I have such an issue. I'd really be 
pleased so see such stability in XFS. I'm using barriers - what else 
must I do?

mfg zmi
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