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13514 discussions

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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looking for disks
by Bertrand HUTIN 30 Sep '02

30 Sep '02

I have an F740 filer and want to increase the capacity. I'm looking for 34Gb@520 bytes/sect disks for a FC9 shelf, part # X231 ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.com

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Migrating Volumes
by Clark Turner 27 Sep '02

27 Sep '02

Can someone suggest a third party app that can safely move several large Netware volumes over? Thanks CT ********************************** Clark Turner Blue Cross Blue Shield of AZ IS Dept. 602-864-5656 cturner(a)phx1.bcbsaz.com ***********************************

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RE: Sun Solaris 8 optimal performance with F880
by Rainchik, Aleksandr (MED) 26 Sep '02

26 Sep '02

As far as I know, that 32k/UDP block size problem is specific to Cisco switches only. We had such a problem when our swithces were upgraded from 55xx model to 65xx. Huge performance problems with 32k blocks, had to change it to 8k. Try to use crossover cable and connect same client directly to the filer. You'll be surprised how well NFS with 32k/UDP packets works... -- a.r. -----Original Message----- From: Brian Long [mailto:brilong@cisco.com] Sent: Thursday, September 19, 2002 8:48 PM To: Deepak Soneji Cc: toasters(a)mathworks.com Subject: Re: Sun Solaris 8 optimal performance with F880 UDP and 32K transfers don't mix. Reduce to 8K transfers (nfs.udp.xfersize 8192) or change to TCP, the preferred method in which to use NFS. /Brian/ > Toasters > > Configuration : Sun E6000 server running Solaris 8 latest patch level > Filer : F880 > Cisco Switch 6509(Flowcontrol turned on) > > > We have recently bought 2- F880 filers and we are in the implementation phases. The weird > performance results we are getting with following system settings and mount parameters. > The output from "sysstat 1" on filer, shows writes 35 MBPS but reads just very slow > or not even generate any traffic. Here are the settings > > ndd -set /dev/udp udp_recv_hiwat 65535 > ndd -set /dev/udp udp_xmit_hiwat 65535 > ndd -set /dev/tcp tcp_recv_hiwat 65535 > ndd -set /dev/tcp tcp_xmit_hiwat 65535 > ndd -set /dev/ge instance 1 > ndd -set /dev/ge adv_pauseTX 1 > ndd -set /dev/ge adv_pauseRX 1 > ndd -set /dev/ge adv_1000autoneg_cap 0 > ndd -set /dev/ge adv_1000fdx_cap 1 > > set sq_max_size = 30 > set nstrpush = 90 > set ncsize 8000 > set nfs:nfs3_max_threads = 24 > set nfs:nfs3_nra =10 > set nfs:nfs_max_threads = 24 > set nfs:nfs_nra = 10 > > Mount file system : > > mount -o rw,bg,hard,intr,proto=udp,vers=3,rsize=32768,wsize=32768 filer01:/vol/test /test > > Test method > > dd if=/dev/zero of=/test/foo bs=32k count=50000 > > > I have tried to search some documents on now site for the optimal performance but I could not > find any optimal numbers which I should try to achieve. > Why reads are chocking up ? > anyone has any proven configuration which works optimally ? > > Thanks in advance for your inputs and thoughts. > > Regards > > -Deepak Soneji > Flextronics International > > -- Brian Long | | | Americas IT Hosting Sys Admin | .|||. .|||. Phone: (919) 392-7363 | ..:|||||||:...:|||||||:.. Pager: (888) 651-2015 | C i s c o S y s t e m s

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RE: Finding who has files open (in use)
by Bui, Marcus 26 Sep '02

26 Sep '02

Paul, Try Hyena from SystemTools http://www.systemtools.com/index.html. It's very useful, especially in a Windows environment. It can list all files open and can sort by filename or LAN ID. You can disconnect the user/multiple users or send them a msg. Also, can export to CSV file. This utility can do a lot more. cheers, Marcus Bui -----Original Message----- From: Maglinger, Paul [mailto:PMAGLINGER@scvl.com] Sent: Thursday, September 26, 2002 3:24 PM To: 'NetApps list server' Subject: Finding who has files open (in use) Greetings toasters! Looking for a way to list files that are in use on the filer and who is using them. I want an output similiar to what you would see if you went into Windows Server Manager, selected the server and clicked on the "In Use" button, but I want something more user friendly than scrolling down looking for the file name. Specifically, we are having problems with users leaving files open, which prevents us from writing over them. I'm looking for a way to quickly track down who has this file open so they can be flogged, keel-hauled, then drawn and quartered. Your thoughts, please? Remember, you are unique... just like everyone else! Paul Maglinger, A+, CA, CCA, CET, MCSE Systems Administrator Shoe Carnival Inc. (812)867-4674 pmaglinger(a)scvl.com

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RE: Finding who has files open (in use)
by Merkin, David S 26 Sep '02

26 Sep '02

There is command line utility that works from an NT Workstation. It shows the open files and it closes the files if you want. It also shows the file id and user who has it opened. It is called NETFILE.EXE. I am not sure if it shareware but you can try to e-mail brian(a)keene.net for a copy. Thanks David -----Original Message----- From: Maglinger, Paul [mailto:PMAGLINGER@scvl.com] Sent: Thursday, September 26, 2002 4:24 PM To: 'NetApps list server' Subject: Finding who has files open (in use) Greetings toasters! Looking for a way to list files that are in use on the filer and who is using them. I want an output similiar to what you would see if you went into Windows Server Manager, selected the server and clicked on the "In Use" button, but I want something more user friendly than scrolling down looking for the file name. Specifically, we are having problems with users leaving files open, which prevents us from writing over them. I'm looking for a way to quickly track down who has this file open so they can be flogged, keel-hauled, then drawn and quartered. Your thoughts, please? Remember, you are unique... just like everyone else! Paul Maglinger, A+, CA, CCA, CET, MCSE Systems Administrator Shoe Carnival Inc. (812)867-4674 pmaglinger(a)scvl.com

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