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Subject:  Bristol Uni - case 4961 - case 4963
Date: Sun, 13 May 2007 09:29:11 -0700
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Thread-Topic:  Bristol Uni - case 4961 - case 4963
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Priority: Urgent
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References: <20070419112234.4bfd5b7e@ripper.onstor.net> <BB375AF679D4A34E9CA8DFA650E2B04E0351BDCE@onstor-exch02.onstor.net>
From: "Tim O'Callaghan" <tim.ocallaghan@onstor.com>
To: "dl-cstech" <dl-cstech@onstor.com>
Cc: "Laurence Armiger" <laurence.armiger@onstor.com>,
	"Bill Duffy" <bill.duffy@onstor.com>,
	"Andy Sharp" <andy.sharp@onstor.com>,
	"Sandeep Randhawa" <sandeep.randhawa@onstor.com>,
	"Sudheesh Nair" <sudheesh.nair@onstor.com>,
	"Gerald Sommariva" <gerald.sommariva@onstor.com>,
	"Eric Barrett" <eric.barrett@onstor.com>

Guys,

I visited Bristol University on Friday - some staff members of the
university are supporters of the ONStor kit but their evangelism is
being undermined by the perceived lack of response from the ONStor
support organisation in addition to availability/stability issues they
are having - we were told by the reseller responsible for this site
(Nexstor) that the university was contemplating decommissioning the
equipment!=20

You must understand 2 things here -=20

1. The university is still trying to work out how they are going to use
this system within their infrastructure - they currently have very few
users actually given access.=20

2. Staff of IT departments within the UK academic arena know each other
and discuss the solutions they are implementing - a poor performance in
Bristol could have a negative impact on our future opportunities here in
the UK.

Bill Duffy however deserves a "mention in dispatches" for his efforts
when he visited a few weeks ago and cleared up a lot of the standing
problems they were having - Jan and Nick were unanimous in their praise
of his professionalism and knowledge.

Case 4961:

They have their network tied down quite tight - understandably being a
University - the EMRS messages do not get forwarded by the SMTP relay
without the correct from address within the 'envelope address'

They have set the autosupport email from address: however, the "envelope
from" addresses their relays see are "root@bobcat1.bris.ac.uk" and
"root@bobcat2.sc1" respectively. =20

They do not want to set up an additional smtp proxy box to fix the "from
address" on the way out.

In the body of the call they raise 3 questions - and give the reason for
their concerns.

"1. Autosupport email uses the sc1 port for outgoing email, right? Is it
supposed to?  "

"2. This also looks like "autosupport email server", which only accepts
an IP address, is using that IP address in inet_addr (ie, it's trying to
look it up) before falling back to "[137.222.10.29]" as the email relay.


Is this a sendmail configuration bug..? "

"3. "autosupport email from" should set the envelope sender. ?"

Please can I have qualified answers to these questions before my next
site visit later this coming week?

Case 4963:

I'm told the memory exhaustion is likely to be exacerbated by the file
system being fragmented - the 2 virtual servers that seem to create the
necessary environment to crash the filers are being used as a staging
post for a disk - disk - ndmp tape backup strategy.=20

We have hopefully identified a method of working around this using
scheduling but is there a utility/pointer available whereby the users
can identify a potentially fragmented file system?=20

Are we able to defragment a file system without doing a data copy across
the network?

As a direct result of the instability the site has endured since
installation there is an understandable reticence to commit their user
data to ONStor solution - they are concerned that should they lose the
ONStor system they would be unable to retrieve data from their backup in
a timely fashion - is there a mechanism to allow an ndmp restore to a
generic file system?

Regards

Tim

-----Original Message-----
From: Sandeep Randhawa=20
Sent: 19 April 2007 19:26
To: Andy Sharp; Alan Cooke (Glasshouse)
Cc: dl-cstech
Subject: RE: Question about email from the emrs overnight autosupport -
Bristol Uni - case 4961

Sometimes root@bobcat1.etc types get blocked by spam control etc...Maybe
that's what's bothering them - not sure.





-----Original Message-----
From: Andy Sharp=20
Sent: Thursday, April 19, 2007 11:23 AM
To: Alan Cooke (Glasshouse)
Cc: dl-cstech
Subject: Re: Question about email from the emrs overnight autosupport -
Bristol Uni - case 4961

My guess is that our sendmail configuration has a envelope-from that is
not being changed by our software, hard-configured to root@FQDN.  Which
ends up translating to root@bobcat1.etc.

The nick.brunton address is being written into the 'From:' header which
MTAs (mail transfer agents, like sendmail or M$ Exchange) don't even
look at. Technically it's part of the email itself. But it is almost
certainly what is displayed by an MUA (email client, like Outlook) as
who sent the email.

The envelope-address shouldn't matter too much, is it just a curiosity
of the customer or is it causing a problem?

Cheers,

a

On Thu, 19 Apr 2007 18:57:12 +0100 "Alan Cooke"
<acooke@css.glasshouse.com> wrote:

> Hi All,
>=20
> Have a question from the customer and I admit I don't really
> understand what he means.
>=20
> He says:
>=20
> "Gone to 2.2.2.2 and this problem is still here. autosupport email
> FROM is "nick.bruton@bristol.ac.uk", but the mail relay is seeing
> email from root@bobcat1.bris.ac.uk.
>=20
> Does "autosupport email generate" supply the right -fname to the
> sendmail invocation?"
>=20
> =20
>=20
> From his config for autosupport :
>=20
> =20
>=20
> nfxshCmd cmd=3D"autosupport show config" rc=3D'0'>
>=20
> Auto Support configuration
>=20
> --------------------------
>=20
> Auto Support State: Enabled
>=20
> Auto Support TO address: nick.bruton@bristol.ac.uk
>=20
> Auto Support NOTETO address: --Not-Set--
>=20
> Auto Support FROM address: nick.bruton@bristol.ac.uk
>=20
> Auto Support MAIL SERVER: 137.222.10.29
>=20
> Auto Support Schedule:
>=20
>                min  : 0=20
>=20
>                hour : 12=20
>=20
>                date : *
>=20
>                month: *
>=20
>                day  : *
>=20
> =20
>=20
> Can someone give me a sensible answer or test to send him?
>=20
> =20
>=20
> Thanks . Alan.
>=20
