toasters June 2003

toasters@lists.teaparty.net

78 participants
80 discussions

Re: ONTAP Simulator available on NOW
by ScottUCE＠aol.com 19 Jun '03

19 Jun '03

Dave: An even better way for users to play with ONTAP is, of course, to use a "real McCoy" version of ONTAP running on an old NetApp filer head and FC shelf. If solely for the purpose of "experimentation" in the support of a production system, would NetApp be hung up on licensing issues? Thanks. Regards, Scott Scott Fischmann Union Computer Exchange, Inc. 6233 Idylwood Lane Minneapolis, MN 55436 email: scott(a)unioncomputer.com phone: 952 935 7282 | fax: 952 935 5056 "Helping our customers make each dollar go further -- since 1991!" www.unioncomputer.com <<.....The point of this message is that we are now making the simulator available to customers so that they can experiment with ONTAP features and commands without putting production systems at risk. I have had many customers tell me that they wished they had a way to play with new releases and new features, but they didn't have a safe place to do it.....>> > Subj:ONTAP Simulator available on NOW > Date:6/18/2003 9:02:24 PM Central Daylight Time > From:<A HREF="mailto:hitz@netapp.com">hitz(a)netapp.com</A> > To:<A HREF="mailto:toasters@mathworks.com">toasters(a)mathworks.com</A> > Sent from the Internet > > > > Some of you may know that NetApp Engineering uses an ONTAP Simulator as > part of our development process. (The simulator runs all of ONTAP as a > process under Linux. At a very low level, we spoof the disk drivers, so > that disks are simulated by local files. We spoof the network drivers > by putting the Linux Ethernet card into promiscuous mode and creating a > fake MAC address associated with the simulator.) > > Enough technical details. > > The point of this message is that we are now making the simulator > available to customers so that they can experiment with ONTAP features > and commands without putting production systems at risk. I have had > many customers tell me that they wished they had a way to play with new > releases and new features, but they didn't have a safe place to do it. > > Just to be clear: This is not production software. It's ONTAP running > on top of Linux, so don't use it for performance testing. We have no > formal support program. Don't call NetApp support. This is an "as is" > tool. (Some restrictions may apply. :-) > > On the other hand, I think you will find the simulator to be very > useful for experimenting with ONTAP. Hundreds of NetApp engineers use > it every day, and we have been using the simulator for over a year in > NetApp training classes. Not only can you experiment with the features > of a single filer, but you can run multiple simulators and experiment > with features like SnapMirror, SnapVault, and Cluster Fail Over. It > doesn't support Fibre Channel, because that would take more hardware, > but it does support iSCSI and all of the other TCP/IP protocols, > including NFS, CIFS, HTTP and FTP, as well as network management > protocols like SNMP and NDMP. > > Here are some details: > > You can download the simulator from NOW at > <http://now.netapp.com/NOW/cgi-bin/simulator>. > > We have created a category in the NOW community forums called > "ONTAP Simulator" that can be accessed at > <http://forums.netapp.com/showcategory.asp?cid=172>. > > And finally, we have created a majordomo mailing list that people > can join at xdl-simulator(a)netapp.com. (You know the drill. To > join send to majordomo(a)netapp.com, not to the simulator list > itself.) > > And of course, feel free to talk about it here on toasters. > > As I said above, the simulator is NOT formally supported, but some > volunteers at NetApp have agreed to informally answer questions to the > xdl-simulator mailing list. > > Have fun! > > Dave Hitz > Founder and EVP Engineering, Network Appliance >

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RE: ONTAP Simulator available on NOW
by Merkin, David S 19 Jun '03

19 Jun '03

Does this work on different OS's other than Linux? Can the Simulater be installed on XP? Thanks, David -----Original Message----- From: Dave Hitz [mailto:hitz@netapp.com] Sent: Wednesday, June 18, 2003 9:29 PM To: toasters(a)mathworks.com Subject: ONTAP Simulator available on NOW Some of you may know that NetApp Engineering uses an ONTAP Simulator as part of our development process. (The simulator runs all of ONTAP as a process under Linux. At a very low level, we spoof the disk drivers, so that disks are simulated by local files. We spoof the network drivers by putting the Linux Ethernet card into promiscuous mode and creating a fake MAC address associated with the simulator.) Enough technical details. The point of this message is that we are now making the simulator available to customers so that they can experiment with ONTAP features and commands without putting production systems at risk. I have had many customers tell me that they wished they had a way to play with new releases and new features, but they didn't have a safe place to do it. Just to be clear: This is not production software. It's ONTAP running on top of Linux, so don't use it for performance testing. We have no formal support program. Don't call NetApp support. This is an "as is" tool. (Some restrictions may apply. :-) On the other hand, I think you will find the simulator to be very useful for experimenting with ONTAP. Hundreds of NetApp engineers use it every day, and we have been using the simulator for over a year in NetApp training classes. Not only can you experiment with the features of a single filer, but you can run multiple simulators and experiment with features like SnapMirror, SnapVault, and Cluster Fail Over. It doesn't support Fibre Channel, because that would take more hardware, but it does support iSCSI and all of the other TCP/IP protocols, including NFS, CIFS, HTTP and FTP, as well as network management protocols like SNMP and NDMP. Here are some details: You can download the simulator from NOW at <http://now.netapp.com/NOW/cgi-bin/simulator>. We have created a category in the NOW community forums called "ONTAP Simulator" that can be accessed at <http://forums.netapp.com/showcategory.asp?cid=172>. And finally, we have created a majordomo mailing list that people can join at xdl-simulator(a)netapp.com. (You know the drill. To join send to majordomo(a)netapp.com, not to the simulator list itself.) And of course, feel free to talk about it here on toasters. As I said above, the simulator is NOT formally supported, but some volunteers at NetApp have agreed to informally answer questions to the xdl-simulator mailing list. Have fun! Dave Hitz Founder and EVP Engineering, Network Appliance

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RE: 144GB Fiber Channel drives in the field
by Art Hebert 19 Jun '03

19 Jun '03

What is the largest disks you can put in an FC9 shelf? I'd like to make the jump to 144gb drives from 36gb if possible. Thanks art -----Original Message----- From: Jeff Burton [mailto:burtonj@pprd.abbott.com] Sent: Tuesday, February 04, 2003 7:47 AM To: toasters(a)mathworks.com Subject: Re: 144GB Fiber Channel drives in the field Here are the results of the tests I ran to check the raid reconstruct speed of a node in an 880c with 72GB drives. The filer was not being used, so the only load was the reconstruct. This is just the base time to reconstruct. One can find a multiplier that can be used to determine the reconstruct speed with the avg load on their filers....although I don't know how easy that would be to find. RAID set size Elapsed (time to reconstruct) 2 29:43.70 (29 min, 43.70 sec) 3 39:59.72 4 51:58.87 5 1:04:17.90 6 1:16:40.76 7 1:29:39.19 8 1:43:01.75 9 1:56:02.55 10 2:09:19.00 11 2:22:39.12 As you can see the time to reconstruct appears to go up by about 11-14 minutes when adding an additional disk. More info on tests: cluster 880 all disks were on the same shelf: DS14 all disks were zero'ed before the reconstruct raid.reconstruct.perf_impact medium raid.resync.perf_impact medium procedure repeated for each raid size: -priv set diag -setflag raid_enable_prezeroing 1 after done all disks zero'ed -setflag raid_enable_prezeroing 0 -vol create vol1 -r 14 11 after volume is created -disk fail (parity disk in vol1) times taken -vol offline vol1 -vol destroy vol1 -disk unfail (disk failed) -- -------------------------------------------------------------- Jeff Burton UNIX Administrator Dept. GB34/Bldg. AP9A-LL EMAIL: burtonj(a)pprd.abbott.com Abbott Laboratories PHONE: 847-935-5778 100 Abbott Park Rd. FAX: 847-935-0142 Abbott Park, IL 60064-6115 On Mon, Feb 03, 2003 at 06:52:31PM -0800, kallen(a)collab.net wrote: > hiya > > anyone using the 144GB drives? > > currently we have DS14s filled with 36GB drives. these are used in a > production environment, so of course we need maximum uptime. we're > considering getting more DS14s filled with either 72GB or 144GB drives. we > want the most bang for the buck, but i have concerns about the 144GB > drives. anyone out there have any experience with them? > > are the reconstruct times for a 144GB disk proportionally prohibitive when > compared to 72GB and 36GB drives? how long does it take to reconstruct a > failed 144GB drive on a hot spare compared to 72GB and 36GB disks, under > consistent filer workload and raid reconstruct speed? > > are there performance issues to consider if we were to go with 144GB > rather than 72GB? > > any other pros and cons? > > thanks in advance, > kallen >

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Microsoft iSCSI
by Holland, William L 18 Jun '03

18 Jun '03

Has anyone tried out MS's iSCSI implementation yet? I filled out their survey on http://www.betaplace.com but it provided no link to download so I guess I have to wait for them to mail it to me.

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RE: Need Serial Console Concentrator
by jeff.mery＠ni.com 17 Jun '03

17 Jun '03

We've started with Avocent CPS1601 (http://www.avocent.com/web/en.nsf/Content/CPS1610) and had no problems. All of our KVM is Avocent in our new building and it works very well with (and without) their authentication software. Jeff Mery, MCP National Instruments -------------------------------------------------------------------------- -- "Allow me to extol the virtues of the Net Fairy, and of the fantastic dorks that make the nice packets go from here to there. Amen." TB (www.penny-arcade.com) -------------------------------------------------------------------------- -- -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Net Backer Sent: Tuesday, June 17, 2003 10:37 AM To: Bob Borowicz; toasters Subject: Re: Need Serial Console Concentrator We use Cyclades TS Series (http://www.cyclades.com/products/index.php?id=2) and a console software called Conserver ( http://www.conserver.com/) Works well for us. -G ----- Original Message ----- From: "Bob Borowicz" <rbaus(a)swbell.net> To: "toasters" <toasters(a)mathworks.com> Sent: Tuesday, June 17, 2003 5:11 AM Subject: Need Serial Console Concentrator > Well we were moving our new Sun 280R's into racks yestarday and one of > my Unix team guys went to plug in an *old* P120 Intel box to use as a > console device when the P/S went south hard. The spike tripped the main > breaker on an OLD OLD OLD PDU which the PC was plugged into. I'm still > wondering why the TWO smaller breakers (one on the Sun rack the PC was > using power from, and one on the PDU supplying the 30 Amp to the Sun > rack) in between didn't trip first. > > Know what else was on that PDU? The IBM Mainframe. After a 45 min IPL we > lost half a days work.... No the NetApp was on two separate house > circuits and stayed up. :-) > > I've been trying to get them to buy me a Console concentrator but I get > those blank stares... What is that and what does it do? Why can't you > use Telnet? Well I shall make a good case for a concentrator today... > > Can you all send me your vendor of choice for Concentrators again? I > know it came up here just a little while ago. I need to collect vendors > and hit them up for this while the issue is hot. > > Thanks > > Bob Borowicz > >

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Post error
by Jonathan 17 Jun '03

17 Jun '03

I use to remember a command that you can run to ignore post errors and boot from the OK prompt. I cant seem to find it today. Anyone willing to take a shot at it? Thanks

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searching for the Mad Dog!
by Gwadz, Joel 17 Jun '03

17 Jun '03

Tom are your ears burning? I am talking about you joel

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Need Serial Console Concentrator
by Bob Borowicz 17 Jun '03

17 Jun '03

Well we were moving our new Sun 280R's into racks yestarday and one of my Unix team guys went to plug in an *old* P120 Intel box to use as a console device when the P/S went south hard. The spike tripped the main breaker on an OLD OLD OLD PDU which the PC was plugged into. I'm still wondering why the TWO smaller breakers (one on the Sun rack the PC was using power from, and one on the PDU supplying the 30 Amp to the Sun rack) in between didn't trip first. Know what else was on that PDU? The IBM Mainframe. After a 45 min IPL we lost half a days work.... No the NetApp was on two separate house circuits and stayed up. :-) I've been trying to get them to buy me a Console concentrator but I get those blank stares... What is that and what does it do? Why can't you use Telnet? Well I shall make a good case for a concentrator today... Can you all send me your vendor of choice for Concentrators again? I know it came up here just a little while ago. I need to collect vendors and hit them up for this while the issue is hot. Thanks Bob Borowicz

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RE: netdiag / linux nfs over tcp
by Clawson, Simon 17 Jun '03

17 Jun '03

What version of Linux? If its 7.3, then do a search on NOW for redhat 7.3+NFS. Its a known bug,a nd the RH Kernel needs upgrading to fix it properly. Simon -----Original Message----- From: Stefan Funke [mailto:bundy@arcor-ip.de] Sent: 17 June 2003 10:15 To: toasters(a)mathworks.com Subject: netdiag / linux nfs over tcp Hi all! Is someone having a lot of linux clients mounted a toaster via nfs over tcp? I have a mixed environment of linux, bsd and sunos clients. When I run "netdiag" here the toaster finds all linux hosts not to perform like they should: Average size of NFS TCP packets received from host: foo is 461. This is less than the MTU (1500 bytes) of the interface involved in the data transfer. The maximum segment size being used by TCP for this host is: 1460. Low average size of packets received by this system might be because of a misconfigured client system, or a poorly written client application. Is someone else seeing such output from netdiag? I'm trying to locate a performance problem only appearing on linux hosts when the filer is under (heavy) load and a snapmirror proc from a second toaster is started. All linux clients produce a load up to 82 and start to freeze. Of course thats really not nice to have - especially when other bsd/sunos hosts have no problems. Netapp itself can't help me - they say that the linux nfs drivers are a pieace of crap and that they're working with linux developers to fix that. (blah blah) Someone else ever had such problems? What did you do? Thanks and greets, -- Stefan Funke, eMail : bundy(a)arcor-ip.de TBD / Zentrale phone : ++49-(0)6196 587-0 Arcor AG & Co. fax : ++49-(0)6196 587-705 Otto-Volger-Strasse 19 PGP KeyID : 0x9BDCA694 65843 Sulzbach, Germany Web : http://www.arcor.de/

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netdiag / linux nfs over tcp
by Stefan Funke 17 Jun '03

17 Jun '03

Hi all! Is someone having a lot of linux clients mounted a toaster via nfs over tcp? I have a mixed environment of linux, bsd and sunos clients. When I run "netdiag" here the toaster finds all linux hosts not to perform like they should: Average size of NFS TCP packets received from host: foo is 461. This is less than the MTU (1500 bytes) of the interface involved in the data transfer. The maximum segment size being used by TCP for this host is: 1460. Low average size of packets received by this system might be because of a misconfigured client system, or a poorly written client application. Is someone else seeing such output from netdiag? I'm trying to locate a performance problem only appearing on linux hosts when the filer is under (heavy) load and a snapmirror proc from a second toaster is started. All linux clients produce a load up to 82 and start to freeze. Of course thats really not nice to have - especially when other bsd/sunos hosts have no problems. Netapp itself can't help me - they say that the linux nfs drivers are a pieace of crap and that they're working with linux developers to fix that. (blah blah) Someone else ever had such problems? What did you do? Thanks and greets, -- Stefan Funke, eMail : bundy(a)arcor-ip.de TBD / Zentrale phone : ++49-(0)6196 587-0 Arcor AG & Co. fax : ++49-(0)6196 587-705 Otto-Volger-Strasse 19 PGP KeyID : 0x9BDCA694 65843 Sulzbach, Germany Web : http://www.arcor.de/

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toasters June 2003