BTRFS, encrypted LVM and disk write cache ?

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Hi list,

I'm a new BTRFS user and will try not to ask FAQs ;-)

I'm currently using Btrfs v0.19 on stock Ubuntu Natty (kernel 2.6.38)
and use a BTRFS inside an encrypted LVM.

The wiki "gotchas" page https://btrfs.wiki.kernel.org/index.php/Gotchas
states :
 btrfs volumes on top of dm-crypt block devices (and possibly LVM)
require write-caching to be turned off on the underlying HDD. Failing to
do so, in the event of a power failure, may result in corruption not yet
handled by btrfs code. (2.6.33) Â

...So I've turned my write cache off, but I notice this is stated for
kernel 2.6.33, so wonder if this still is an issue with 2.6.38, or has
it been addressed since ?

Thanks in advance for your help.

Kind regards.

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