* separating data and metadata
@ 2013-09-10 17:34 enzo ferrari
2013-09-11 5:44 ` Duncan
0 siblings, 1 reply; 2+ messages in thread
From: enzo ferrari @ 2013-09-10 17:34 UTC (permalink / raw)
To: linux-btrfs
any idea about separating Btrfs' data and metadata to improve the security
of flash storage?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: separating data and metadata
2013-09-10 17:34 separating data and metadata enzo ferrari
@ 2013-09-11 5:44 ` Duncan
0 siblings, 0 replies; 2+ messages in thread
From: Duncan @ 2013-09-11 5:44 UTC (permalink / raw)
To: linux-btrfs
enzo ferrari posted on Tue, 10 Sep 2013 17:34:28 +0000 as excerpted:
> any idea about separating Btrfs' data and metadata to improve the
> security of flash storage?
I don't see that listed on the wiki features list yet, for either current
or planned features.
Btrfs does have an ssd mode (enabled automatically in current kernels if
non-rotating storage is detected), and a couple additional optional mount-
options (ssd-spread and discard) that could be helpful on some but not
all SSD hardware, so those are NOT enabled by default, and btrfs does
default to allocating separate data and metadata "chunks" on demand
(unless the filesystem's too small, under a gig, in which case it
defaults to "mixed"), but I don't believe it's possible to tell it to put
data on one device and metadata on a different one, for instance.
FWIW, https://btrfs.wiki.kernel.org
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
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