Thanks for the feedback, that explained it quite succinctly........

sudo fstrim -v /boot
/boot  xxxxxxxxxxx bytes were trimmed, all is right with the world :-).

sudo fstrim -v /
fstrim /:  FITRIM ioctl failed: Operation not supported   . WTH, Are you
stupid?





On Wed, Feb 13, 2013 at 4:50 PM, Chris Knadle <[email protected]>wrote:

> On Wednesday, February 13, 2013 16:22:47, Michael Quick wrote:
> > I'm old school running RHEL6 with  Kernel 2.6 x86_64...  I might as well
> > have just said I was running my OS off of 5 and a quarters... lol
>
> AFAICT there is a conceptual problem with TRIM + LUKS.
>
> The idea behind LUKS is having the entire partition encrypted (usually
> filled
> with random garbage first), and then putting a filesystem on top of the
> random
> garbage.  This means that the LUKS partition is "always full".  The idea
> behind TRIM is to tell the SSD which blocks are now unused.  These seem to
> be
> mutually-exclusive things.
>
> According to Wikipedia only certain filesystems support TRIM.  Ext4 and XFS
> do, but Ext3 supposedly only supports offline TRIMming via a system call.
>
> Out of curiosity what error are you getting?
>
>   -- Chris
>
> --
> Chris Knadle
> [email protected]
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