[lustre-discuss] setdirstripe

[Spitz, Cory James]

ENOSYS is “function not implemented”.

Yeah, unfortunately, that’s what you get by leveraging Linux errno values and of course Lustre is based on Linux.

Lustre is constructed this way too for interoperability reasons.  That is, we need standard error coding between clients and servers.  If the Cray/HPE implementation was to return something meaning “this is disabled” then 3rd-party clients wouldn’t be able to grok it.

-Cory

On 10/24/20, 2:55 PM, "Michael Di Domenico" <mdidomenico4 at gmail.com> wrote:


now that you mention it, i do think i recall someone telling me that
at some point.  what threw me was the phrasing of the error message.
had it been "this is disabled" i would have remembered

thanks

On Sat, Oct 24, 2020 at 1:33 AM Spitz, Cory James <cory.spitz at hpe.com> wrote:
>
> Hello, Michael.
>
>
>
> I noticed in a previous message to the list you said that you were “running clusterstor 3.2”.  I assume that your 2.11 servers are really running the Cray/HPE 2.11 as part of Neo 3.2.  If so, please know that Neo 3.2 does not support DNE2 striped directories due to numerous possible data corruptions with the underlying 2.11.0 base.  We’ve disabled the capability to protect our customer’s data and file system integrity.  Most of those issues are now fixed in master and b2_12 and HPE supports DNE2 in our 4.x Neo line.  An upcoming release of Neo for your HW will bring the capability to your platform.  Please contact your HPE rep if you need further assistance planning the upgrade and/or if you want to experiment with DNE2 on a test platform prior to an upgrade.
>
> Thanks,
>
> -Cory
>
>
>
> On 10/23/20, 11:51 AM, "lustre-discuss" <lustre-discuss-bounces at lists.lustre.org> wrote:
>
>
>
> i'm trying to create a striped directory, but when i run `lfs
> setdirstripe -c 2 test_dir` i get, 'function not implemented'
>
> i'm running 2.11 on the servers and 2.12.5 on the clients
>
> i can run lfs setdirstrip -i 0 test_dir_one and -i 1 without issue, so
> i can utilize both MDT's
>
> is there something not turned on somewhere that should be to enable
> directory striping?  i haven't found anything perusing the
> documentation so far
> _______________________________________________
> lustre-discuss mailing list
> lustre-discuss at lists.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20201030/0667d9b6/attachment-0001.html>