Write caching, XFS log

[Andrew Klaassen <ak@xxxxxxx>]

Question:  Would it make sense to put the XFS log on a device
with write caching turned off, and the main portion of the file
system on a device with write caching turned on?  From what I've
been reading, turning on write caching can give a major
performance boost in some cases, but can also seriously
jeopardize metadata integrity, defeating the purpose of having a
metadata-journalling FS in the first place.  Would turning off
write caching just for the log get around this problem?

Andrew Klaassen