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RE: UNIX /var/mail on NetApp?
by Andrew Richards 01 Oct '02

01 Oct '02

> ...snip... > If you can direct all your mail client accesses through IMAP or POP, > leaving no programs but the delivery agent and the imap/pop daemon > doing direct mailbox accesses, then you get the ability to > relatively painlessly change mailbox formats. That's worthwhile; > Maildir+NetApp is one of the sweetest spots in the whole mail server > design spectrum. Forget locking, forget recovery, everything Just > Works. > When I build a server, even if it's a single box for everything, I > go with maildrop delivering to virtual user Maildirs, with > Courier-IMAP (which offers pop, and the /ssl varients) providing > access for MUAs; this sets me up to grow as big as ever I could > want and never worry about mailbox correctness. I'd like to echo those sentiments: I build mail systems - the Maildir / NetApp combo means that my largest client currently has a system with 1.6 million Maildirs ( = users) and it's still growing nicely. I wrote to highlight qmail - "The original and best" mailserver to use Maildirs. Qmail is a particularly strong mailserver implementation and is very stable - I have some concerns with Courier mentioned by Bennett in that a new version seems to appear frequently. The other nice thing about Maildirs is that because of their (as Bennett says) "everything Just Works" design, you can have multiple machines writing entries (messages) to the same Maildir without their needing to be aware of one another's existence; that really helps systems to scale. More info on qmail at www.qmail.org and cr.yp.to/qmail.html cheers, Andrew.

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can't login at 6.2.1R1 ...
by Frank Bonnet 01 Oct '02

01 Oct '02

Hi Since I've installed the 6.2.1R1 GA release NFS is working well BUT I am unable to login from the console or to perform a telnet/rsh session from authorized hosts . .. I haven't change anything in configuration files. Is there some special things to do to recover the login ability ? The machine is a F85 Thanks a lot. -- Frank Bonnet

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Recital Database
by Matej Moskon 01 Oct '02

01 Oct '02

Is there anybody using Recital Database stored on NetApp? Has anybody tried to move datafiles on Filer yet? We done that, but we have noticed that there have been a huge performace impact from the application point of view, since copying the files under NFS has worked just fine. Any suggestions? Matej

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Gig Enet and Filer NFS problems
by Darragh, Stephen J 30 Sep '02

30 Sep '02

Hi, We have some F820s running Gig E (fibre, not copper) and are starting to get complaints about nfs performance. We have taken all the defaults for the network setting and just wanted to do a quick sanity check with the group to see if there are known issues. Thanks Steve Darragh

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RE: UNIX /var/mail on NetApp?
by Mike Sphar 30 Sep '02

30 Sep '02

This is a good point. I know Solaris does this, possibly others. The default Sendmail configuration on at least some versions of Solaris will automatically try to use the server /var/mail is mounted from as the mailhost for transferring outgoing mail. You should be able to override this in the sendmail.cf. -- Mike Sphar - Sr Systems Administrator Remedy Corporation -----Original Message----- From: devnull(a)adc.idt.com [mailto:devnull@adc.idt.com] Sent: Monday, September 30, 2002 1:04 PM To: toasters(a)mathworks.com Subject: Re: UNIX /var/mail on NetApp? here is what we do in /etc/auto_direct /var/mail -rw,hard,actimeo=0 filer:/vol/vol2/mail intr, hard are defaults. You might want to add noac. This is not the right way of doing things(over nfs that is). If your people complain about not getting mail on the client, do a /usr/lib/sendmail -v you(a)yourdomain.com You might see it trying to make a port 25 connection to your filer :) Again, that is not a NetApp thing, more of a /var/mail over NFS thing. Thanks. > David, > > we store /var/mail on NetApp filers (F840c, F760c) at several sites > with diffeent size (12 to 200 Sun Solaris 2.5.1/7/8/9 clients) without > problems. > > we automount /var/mail in /etc/auto_direct with these options: > > /var/mail -rw,hard,intr,noac,actimeo=0 filer:/vol/vol1/qtree04/mail > > we do use POP3, but most clients access the mailbox via NFS directly. > > Hope this helps > > --pwo >

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UNIX /var/mail on NetApp?
by David Lee 30 Sep '02

30 Sep '02

We run a fairly traditional UNIX email service: delivery to a Solaris-8 machine with sendmail, hosting the "/var/mail" mailstore. The operations on the mailstore files themselves are entirely from the Washington suite: POP/IMAP server (clients) and their "tmail" (sendmail 'Mlocal' delivery). There is no direct NFS access to the mailstore. One of the pieces of received wisdom is that the "/var/mail" mailstore should not be accessed by NFS, as NFS is (they would say) notoriously problematical. I'm inclined to believe this. Nevertheless, we are toying with the idea of putting "/var/mail" onto a NetApp thereby, of course, introducing NFS and its locking into the equation. Naturally, we are rather wary of doing this. But, if done, its major advantage for us would be in allowing us to set up an expandable "farm" of modest-size IMAP/POP machines, rather than having to run it all on one major machine. Anyone got any thoughts and/or experiences with UNIX /var/mail on NetApp? -- : David Lee I.T. Service : : Systems Programmer Computer Centre : : University of Durham : : http://www.dur.ac.uk/t.d.lee/ South Road : : Durham : : Phone: +44 191 374 2882 U.K. :

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Re: UNIX /var/mail on NetApp?
by Rune Bakken 30 Sep '02

30 Sep '02

David Lee <t.d.lee(a)durham.ac.uk> writes: > Anyone got any thoughts and/or experiences with UNIX /var/mail on NetApp? My company is hosting a fairly large mail-system with several Solaris based mailservers (pop/imap/smtp) all served from a single F880 with close to 3TB of raw disks with no major systemic problems at least regarding usage of NFS. The words saying that NFS is problematic, is at best history, as I have been in companies using NetApp's for mail-store for the past 7 years or so. It may involve tuning nfs on the client side, we have not done much on the netapp side - and ensuring that the network is able to handle the expected traffic. >>>>>>>>>>>>>>>>>>.rune -- Rune Bakken Senior System Administrator Telenor Business Solutions (Nextra), Communications/IP-Services Ph: +47 22 77 03 93

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help with mrtg for the filer
by Darragh, Stephen J 30 Sep '02

30 Sep '02

Sorry about the last message. I got the filer-mrtg to build and am collecting some data. VERY nice tool. I was wondering if there ware any know issues/bugs. Thanks Stephen Darragh

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RE: large data move
by Toal, Dave 30 Sep '02

30 Sep '02

Geoff, Easiest and fastest is to set up crossover cables and use snapmirror. If you have multiple interfaces free (a quad card maybe) interfaces can be trunked with vif; with a single crossover line I saw a vol with 185 gig of data mirrored in about 6 1/2 hours. Syntax is dead easy, source -> destination; waldorf is the source filer here. netapp-demo> snapmirror initialize -S waldorf:domain2 netapp-demo:domain2 netapp-demo> rdfile /etc/snapmirror.allow waldorf netapp-demo> -- Dave Toal Unix Mostly Thomson & Thomson N. Quincy, MA -----Original Message----- From: Geoff Hardin To: toasters Sent: 9/30/02 9:26 AM Subject: large data move I am contemplating moving an entire filer from 18 GB drives (many, many problems) to 36 GB drives; the reasons are an entirely separate posting. My question is, what is the fastest, most reliable way to move the data? This past weekend, I moved about 100 GB in four different qtrees with ndmpcopy, and each qtree averaged about 40 hours to move (between 34 to 44 hours). I am looking at moving three times that amount of data on this other filer. I seem to recall using snapmirror or snaprestore when we migrated from an F630 to our F760C, but that was quite some time ago. I was wondering if anyone had stories, recommendations, pointers on what is the best method to transfer data. Thanks to all in advance! Geoff Hardin geoff.hardin(a)dalsemi.com Gun control is a steady hand!

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large data move
by Geoff Hardin 30 Sep '02

30 Sep '02

I am contemplating moving an entire filer from 18 GB drives (many, many problems) to 36 GB drives; the reasons are an entirely separate posting. My question is, what is the fastest, most reliable way to move the data? This past weekend, I moved about 100 GB in four different qtrees with ndmpcopy, and each qtree averaged about 40 hours to move (between 34 to 44 hours). I am looking at moving three times that amount of data on this other filer. I seem to recall using snapmirror or snaprestore when we migrated from an F630 to our F760C, but that was quite some time ago. I was wondering if anyone had stories, recommendations, pointers on what is the best method to transfer data. Thanks to all in advance! Geoff Hardin geoff.hardin(a)dalsemi.com Gun control is a steady hand!

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