From: "Swâmi Petaramesh" <swami@petaramesh.org>
To: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Is there a "nossd" option ?
Date: Sun, 21 Jun 2015 19:13:10 +0200 [thread overview]
Message-ID: <1586648.BNplRrhkhg@zafu> (raw)
Hi,
Running a 3.19 Ubuntu kernel,
I'm currently budling a RAID-1 BTRFS set for which every underlying device is
a LUKS-encrypted device itself built out of a bcache device comprised of a
mechanical HD partition + an SSD cache partition.
Looks like it's working.
BUT I see that BTRFS decides by itself to mount with the "ssd" option as
bcache makes it think the device is not "rotational".
However I feel that a mechanical HD plus SSD bcache should probably not be
"SSD-optimized" as the underlying storage is indeed mechanical and bcache
already manages the SSD part optimization by itself - and I'm afraid the "SSD
optimization" could actually cause the mechanical storage to end up being much
more fragmented than it should...
So the question is : Is there a mount option such as "nossd" that I could use
to inhibit the automatic SSD "choice" that BTRFS makes ?
TIA, kind regards.
--
Swâmi Petaramesh <swami@petaramesh.org> http://petaramesh.org PGP 9076E32E
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next reply other threads:[~2015-06-21 17:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-21 17:13 Swâmi Petaramesh [this message]
2015-06-21 17:31 ` Is there a "nossd" option ? Roman Mamedov
2015-06-21 18:11 ` Swâmi Petaramesh
2015-06-21 18:18 ` Eric Sandeen
2015-06-21 18:22 ` Roman Mamedov
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