Is there a "nossd" option ?

Swâmi Petaramesh
2015-06-21T17:13:17Z

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

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in