More on write caching

[Andrew Klaassen <ak@xxxxxxx>]

I've asked about write caching before, and now I've got another
question.

If I've got write caching turned on, and the power goes out, do
I face the possibility of silent metadata corruption?

With ext2, the fsck would attempt to fix metadata problems on
bootup; on the other hand, with xfs, if write caching resulted
in a corrupted log, would the simple log replay that xfs does on
mount perhaps fail to catch possible metadata problems?

Andrew Klaassen