[Samba] Samba share for HPC environment.

[Daniel Lopes de Carvalho]

Great!

I'll try it and let you know.

Thanks!

On Wed, May 26, 2021 at 1:40 PM Jeremy Allison <jra at samba.org> wrote:

> On Wed, May 26, 2021 at 01:34:56PM -0300, Daniel Lopes de Carvalho wrote:
> >On Mon, May 24, 2021 at 3:48 PM Jeremy Allison <jra at samba.org> wrote:
> >
> >> On Mon, May 24, 2021 at 03:37:47PM -0300, Daniel Lopes de Carvalho
> wrote:
> >>
> >> >The outage occurs between headnode server and clients desktops
> (Windows 7,
> >> >10, Server 2012 and 2019) only.
> >>
> >> How long does the outage last ?
> >
> >Extremely short, but it is enough to cause problems in the running
> >software.
> >
> >
> >> What is causing it ?
> >
> >My guess is that the write operation (with multiple opened network
> >connections) of this software.
> >
> >
> >> Does it cause TCP connection failure between client and headnode ?
> >>
> >Yes
>
> OK, if the outage is short, then Samba supports durable handles
> which should allow recovery.
>
>  From the smb.conf man page.
>
>         durable handles (S)
>
>             This boolean parameter controls whether Samba can grant SMB2
> durable file handles on a share.
>
>             Note that durable handles are only enabled if kernel oplocks =
> no, kernel share modes = no, and posix locking = no, i.e. if the share is
>             configured for CIFS/SMB2 only access, not supporting
> interoperability features with local UNIX processes or NFS operations.
>
>             Also note that, for the time being, durability is not granted
> for a handle that has the delete on close flag set.
>
>             Default: durable handles = yes
>
> Note that you'll need "kernel oplocks = no, kernel share modes = no, and
> posix locking = no".
>


-- 
Daniel Lopes de Carvalho
daniel at cepetro.unicamp.br
unisim.cepetro.unicamp.br <https://www.unisim.cepetro.unicamp.br/>
+55 19 3521-1221