Grant
From: ADSM: Dist Stor Manager on behalf of Zoltan Forray
Sent: Friday, 7 September 2018 4:22 AM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] nfstimeout on server ISILON storage
>>> Are the timeouts repeatable enough that you can get a packet ca
or experience
Grant
From: ADSM: Dist Stor Manager on behalf of Frank Kraemer
Sent: Friday, 7 September 2018 7:50 AM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] nfstimeout on server ISILON storage
Isilon = Slow Performance
- Although a parallel filesystem inside (OneFS),
Isilon = Slow Performance
- Although a parallel filesystem inside (OneFS), each client node can only
talk to a single Isilon node using standard NAS protocols, which then
performs
parallel I/O across the internal high speed IB network to other Storage
Nodes.
- NFS Client nodes (=TSM Server) have
>>> Are the timeouts repeatable enough that you can get a packet capture
in there before and while they're happening?
They happen often/sometimes all-the-time if there is any kind of
storagepool activity. Looking through /var/log/messages - it happened
almost every 5-minutes starting before from
-
From: ADSM: Dist Stor Manager On Behalf Of Zoltan Forray
Sent: Wednesday, September 5, 2018 3:07 PM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: [ADSM-L] [EXTERNAL] Re: nfstimeout on server ISILON storage
* This email originated outside of the organization. Use caution when opening
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M: Dist Stor Manager On Behalf Of Zoltan
> Forray
> Sent: Wednesday, September 5, 2018 9:03 AM
> To: ADSM-L@VM.MARIST.EDU
> Subject: [EXTERNAL] Re: nfstimeout on server ISILON storage
>
> A pair of 10G links bonded - CISCO switches.
>
> On Tue, Sep 4, 2018 at 7:54 PM Skylar Thompso
Yep, you're right, I misread that (shouldn't send email pre-coffee).
Are the timeouts repeatable enough that you can get a packet capture in
there before and while they're happening?
On Wed, Sep 05, 2018 at 07:09:09PM -0400, Zoltan Forray wrote:
> Skylar,
>
> I sent your comment about UDP vs TDP
Skylar,
I sent your comment about UDP vs TDP to my OS tech (beyond my ken) - got
this feedback:
I assume what they are talking about is this:
hhisilonnfs23.rams.adp.vcu.edu:/ifs/NFS/TSM on /tsmnfs type nfs
(rw,relatime,sync,vers=3,rsize=131072,wsize=524288,namlen=255,hard,proto=tcp,timeo=600,ret
half Of Zoltan
> Forray
> Sent: Wednesday, September 5, 2018 9:03 AM
> To: ADSM-L@VM.MARIST.EDU
> Subject: [EXTERNAL] Re: nfstimeout on server ISILON storage
>
> A pair of 10G links bonded - CISCO switches.
>
> On Tue, Sep 4, 2018 at 7:54 PM Skylar Thompson wrote:
>
>
ill a bug in LACP support.
Rick
-Original Message-
From: ADSM: Dist Stor Manager On Behalf Of Zoltan Forray
Sent: Wednesday, September 5, 2018 9:03 AM
To: ADSM-L@VM.MARIST.EDU
Subject: [EXTERNAL] Re: nfstimeout on server ISILON storage
A pair of 10G links bonded - CISCO switches.
O
It looks like you're using UDP as a transport - have you tried switching to
TCP? Especially with large NFS payload sizes, you're going to get lots of
fragmentation with UDP's 512-byte packet limit.
On Wed, Sep 05, 2018 at 09:03:25AM -0400, Zoltan Forray wrote:
> A pair of 10G links bonded - CISCO
A pair of 10G links bonded - CISCO switches.
On Tue, Sep 4, 2018 at 7:54 PM Skylar Thompson wrote:
> Quick question - what's the data link protocol (Ethernet, IB, etc.) and
> link rate
> that you're using?
>
> On Tue, Sep 04, 2018 at 02:05:33PM -0400, Zoltan Forray wrote:
> > We are still fighti
Quick question - what's the data link protocol (Ethernet, IB, etc.) and link
rate
that you're using?
On Tue, Sep 04, 2018 at 02:05:33PM -0400, Zoltan Forray wrote:
> We are still fighting issues with ISILON storage. Our current issue is with
> NFS timeouts for the storage a server is using. We s
We are still fighting issues with ISILON storage. Our current issue is with
NFS timeouts for the storage a server is using. We see message like these
in the server /var/log
Sep 4 13:21:49 earth kernel: nfs: server hhisilonnfs23.rams.adp.vcu.edu
not responding, still trying
Sep 4 13:21:49 earth
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