On Wednesday 17 August 2011, Tixy wrote:
> On Wed, 2011-08-17 at 13:11 +0200, Arnd Bergmann wrote:
> > On Wednesday 17 August 2011, James Tunnicliffe wrote:
> > > One thing I noticed during Ubuntu boot on my Panda was that the mount
> > > process would say that it detected btrfs was running on a flash card
> > > and it had enabled flash mode. I don't know what is different in flash
> > > mode and I don't know if when I let Ubuntu auto-mount a flash card for
> > > testing on my Laptop if it enabled it. The only mount option I can
> > > find that sounds right is "ssd", which isn't on when I just tested it
> > > now.
> >
> > Good point. Tixy, do you know what mode you were testing btrfs with?
>
> No idea. Do you know a way of finding out what default mount options
> are? The only documentation I've found is the man page for 'mount', but
> this doesn't mention btrfs at all.
When you look in /proc/mounts while the file system is mounted, it should
show exactly one of the three options (ssd, nossd, ssd_spread).
You can change the active setting using e.g.
mount -o remount,ssd_spread /dev/sdd1
Arnd
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