From: "Swâmi Petaramesh" <swami@petaramesh.org>
To: Linux BTRFS <linux-btrfs@vger.kernel.org>
Subject: BTRFS, SSD and single metadata
Date: Mon, 16 Jun 2014 09:54:01 +0200 [thread overview]
Message-ID: <1723493.aXdklhDgAK@vajra> (raw)
Hi,
I created a BTRFS filesytem over LVM over LUKS encryption on an SSD [yes, I
know...], and I noticed that the FS got created with metadata in "DUP" mode,
contrary to what "man mkfs.btrfs" says for SSDs -> it would be supposed to be
"SINGLE"...
Well I don't know if my system didn't identify the SSD because of the LVM+LUKS
stack (however it mounts well by itself with the "ssd" flag and accepts the
"discard" option [yes, I know...]), or if the manpage is obsolete or if this
feature just doesn't work...?
The SSD being a Micron RealSSD C400
For both SSD preservation and data integrity, would it be advisable to change
metadata to "SINGLE" using a rebalance, or if I'd better just leave things the
way they are...?
TIA for any insight.
--
Swâmi Petaramesh <swami@petaramesh.org> http://petaramesh.org PGP 9076E32E
Tout le malheur des hommes vient de ce qu'ils ne vivent pas dans _le_ monde,
mais dans _leur_ monde.
-- Héraclite.
next reply other threads:[~2014-06-16 7:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-16 7:54 Swâmi Petaramesh [this message]
2014-06-16 11:09 ` BTRFS, SSD and single metadata Austin S Hemmelgarn
2014-06-16 11:18 ` Swâmi Petaramesh
2014-06-16 11:23 ` Austin S Hemmelgarn
2014-06-16 12:01 ` Russell Coker
2014-06-16 12:16 ` Duncan
2014-06-16 12:26 ` Swâmi Petaramesh
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