[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[LDM #SJF-337060]: SSD for PQ

Hi Clint,

re: not getting back to you in a timely manner
> No problem. As you noticed, it's doing well -- better than I expected.

> Yes, I did go
> with ext4 and the default mounting options.

Since sending you the note, I had a chance to talk with Mike, and he verified
that he opted to use 'ext4' as the FS for the SSD on our Edex machine.

> I'm not exactly sure what those are on our
> system and I'd like to find out if TRIM is enabled, but I'm not exactly sure 
> how to
> determine that, or even if it matters for the product queue (which is the 
> only thing on
> the SSD).  If you or Mike have some guidance on that, I'd certainly like to 
> hear it. I
> found a pretty good (I think) explanation/how-to at 
> http://blog.neutrino.es/2013/howto-
> properly-activate-trim-for-your-ssd-on-linux-fstrim-lvm-and-dmcrypt/.  I'm 
> not using
> dm-crypt (whatever that is) and there's only a single disk (other than the 
> SSD), so no
> LVM, either.  That leaves his recommendation of not using the discard option 
> in fstab
> and, instead, running fstrim periodically -- which he makes a good case for.

Here is how the SSD is mounted on our Edex system (line from /etc/fstab):

/dev/sdb1               /awips2                 ext4    defaults        0 1

re: is TRIM enabled?

We are not doing anything overtly to enable/use TRIP... yet  We have been
running an Intel NUC as one of our NOAAPort ingest machines with an SSD
and that is where the LDM queue resides for a number of months now, and
we have not seen any degradation in performance... yet.


Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
Unidata HomePage                       http://www.unidata.ucar.edu

Ticket Details
Ticket ID: SJF-337060
Department: Support LDM
Priority: Normal
Status: Closed

NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.