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7.2.x snapmirror to 7.3 and back again
by Roscoe P Coltraine 01 Dec '08

01 Dec '08

i have a filer on 7.2.4 with a very large volume size of 12164g. i need to do some loop reorginzation and want to snapmirror it off to a newer filer running 7.3 and then delete it to free up space for some other volume migrations and shelf swaps. when all is said and done i want to put this volume back. so the question is will i be able to snapmirror it back from 7.3 to 7.2.x?

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SD 6.01 / W2K8 x64 / iSCSI and NLB Cluster
by Raj Patel 28 Nov '08

28 Nov '08

Hi all, A few queries about the above config - We are setting up a new E2k7 system with 2 front end CAS servers with NLB and 2 back end Mailbox servers in NLB config and doing CCR between them (no shared storage). I was able to install SnapDrive 6.01 and create four LUN's (non shared dedicated) on each Mailbox server on two seperate SAN's for the mail stores & logs. No problem. However as soon I rebooted and went to check the LUN's (which stayed connected) and create a new one I got a couple of errors (different on each system) - RPC server unavailable - Security package related error Oddly I can expand existing LUN's OK via SD - so some functionality exists - just can't create a new LUN within SD. I have had a suggestion to make sure the Windows Quorum Witness Disk should also be on the SAN - following Microsoft best practive I've created a small Quorum Witness Disk and share on a CAS server. Thats fine - still doesn't fix the RPC error (I can ping and access the admin share on the SAN from each mailbox server). The most annoying thing is that none of these issues has cropped up with W2K3 and SD 4.2.1 - I'm following the same fundamental setup steps. Given I'm not using shared storage clustering just CCR and NLB I want to discover the root of the SD errors - is it SD trying to be clever and insisting that for a Windows cluster you really need shared disks registered with the cluster administrator regardless of wether they're shared or not ? - just some weirdness with W2K8 and SD 6.01 ? - are there any gotchas with W2K8 and SD 6.01 that I need to be aware of ? I just noticed theres a DCOM exception for the W2K8 firewall on NOW - how come SD doesn't set this stuff up at install time ? I want to eliminate the clustering ASAP issue because until I nail the problem the Exchange guys can't really proceed with the rest of the install. Particularly if I need to keep messing around with breaking and re-establishing the cluster to sort out an RPC error. Thanks in advance, Raj.

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Re: Downgrading Data ONTAP?
by Simon Vallet 28 Nov '08

28 Nov '08

Hi, On Tue, 25 Nov 2008 18:37:56 +0100 "Patrick van Helden" <pvh(a)databasement.eu> wrote: > I have reverted Ontap on several occasions, and yes before the revert > you will have to delete all the snapshots that were made with the new > Ontap version. Any snapshots made with the old version of ontap can > remain on the system. Confirmed. We downgraded yesterday, and it went quite well; the procedure from NetApp did indeed hint at deleting previous snapshots before downgrading. This cluster seems in good shape now. Let's just hope it'll stay that way ;-) Simon -- Simon Vallet Ingénieur systèmes, réseaux, sécurité CEA DSV/IG/GEN - Genoscope Tél.: +33 1 60 87 36 06 Mél.: svallet(a)genoscope.cns.fr

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Re: vfiler migrate - qtree level mounts
by Fox, Adam 27 Nov '08

27 Nov '08

I can't see how this would be the case as long as you're SnapMirror relationships are volume-based, which vfiler migrate should do by default. But if you are migrating at the qtree level, clients would have to remount. -- Adam Fox ------------------------ Typed with my thumbs on a very small keyboard. ----- Original Message ----- From: Buerger, Andreas <andreas.buerger(a)wincor-nixdorf.com> To: toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Thu Nov 27 11:14:08 2008 Subject: vfiler migrate - qtree level mounts Hi, I want to perform a vfiler migrate in a production evironment this weekend, and regarding that I had a deeper look at the documentation at NOW. I did the migrate procedure some times before but always with non production data, and every time the migration went smooth without any client interuption (just nfs access). But when I had a deeper look at the documentation I was a little worried about the following chapter, how does a vfiler migration affect clients: http://now.netapp.com/NOW/knowledge/docs/ontap/rel73_vs/html/ontap/vfile r/provisioning/concept/c_oc_prov_vfiler-dr-how-migrating-affects-clients .html#c_oc_prov_vfiler-dr-how-migrating-affects-clients (same at the 7.2.5 documenation) # NFS volume-level mounts move transparently. # NFS qtree-level mounts need to be remounted. I tested that yesterday and and I can't reproduce that qtree level mounts need to be remounted after a vfiler migrate. Nearly every mount in our environment is based on the qtree level, so we would have a big problem if that's true. When I performed vfiler migrations in the past I never had any errors, it was just like a filer reboot or takeover, and I'm pretty sure that I had a lot qtree level mounts on the clients that were affected. Can anybody explain, why a qtree level mount needs be remounted like the documentation says? And whats the difference for the client if it mounts a complete volume like filer:/vol/volume or a qtree like filer:/vol/volume/qtree? May be someone can put me on the right way. Cheers Andreas -- WINCOR NIXDORF International GmbH Sitz der Gesellschaft: Paderborn Registergericht Paderborn HRB 3507 Geschäftsführer: Eckard Heidloff (Vorsitzender), Stefan Auerbach, Dr. Jürgen Wunram Vorsitzender des Aufsichtsrats: Karl-Heinz Stiller Steuernummer: 339/5884/0020 - Ust-ID Nr.: DE812927716 - WEEE-Reg.-Nr. DE44477193 Diese E-Mail enthält vertrauliche Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser E-Mail ist nicht gestattet. This e-mail may contain confidential information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden.

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vfiler migrate - qtree level mounts
by Buerger, Andreas 27 Nov '08

27 Nov '08

Hi, I want to perform a vfiler migrate in a production evironment this weekend, and regarding that I had a deeper look at the documentation at NOW. I did the migrate procedure some times before but always with non production data, and every time the migration went smooth without any client interuption (just nfs access). But when I had a deeper look at the documentation I was a little worried about the following chapter, how does a vfiler migration affect clients: http://now.netapp.com/NOW/knowledge/docs/ontap/rel73_vs/html/ontap/vfile r/provisioning/concept/c_oc_prov_vfiler-dr-how-migrating-affects-clients .html#c_oc_prov_vfiler-dr-how-migrating-affects-clients (same at the 7.2.5 documenation) # NFS volume-level mounts move transparently. # NFS qtree-level mounts need to be remounted. I tested that yesterday and and I can't reproduce that qtree level mounts need to be remounted after a vfiler migrate. Nearly every mount in our environment is based on the qtree level, so we would have a big problem if that's true. When I performed vfiler migrations in the past I never had any errors, it was just like a filer reboot or takeover, and I'm pretty sure that I had a lot qtree level mounts on the clients that were affected. Can anybody explain, why a qtree level mount needs be remounted like the documentation says? And whats the difference for the client if it mounts a complete volume like filer:/vol/volume or a qtree like filer:/vol/volume/qtree? May be someone can put me on the right way. Cheers Andreas -- WINCOR NIXDORF International GmbH Sitz der Gesellschaft: Paderborn Registergericht Paderborn HRB 3507 Gesch�ftsf�hrer: Eckard Heidloff (Vorsitzender), Stefan Auerbach, Dr. J�rgen Wunram Vorsitzender des Aufsichtsrats: Karl-Heinz Stiller Steuernummer: 339/5884/0020 - Ust-ID Nr.: DE812927716 - WEEE-Reg.-Nr. DE44477193 Diese E-Mail enth�lt vertrauliche Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrt�mlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser E-Mail ist nicht gestattet. This e-mail may contain confidential information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden.

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Fabric Metrocluster and FC switches
by Milazzo Giacomo 27 Nov '08

27 Nov '08

Hi all Up to now we've always successfully used Brocade 200E, 8 or 16 port, also because these are the only FC switches well documented in the TR3548 (Metrocluster Design and Implementation Guide). In that doc you can find also the correct cabling schema from shelves/heads to the correct port of switched. And in my experience it seems that MC software in Data Ontap seems to be stricly linked to the Brocade: if you wrong a cabling the system will warn you! Anyway I've read other docs where other model and/or vendors are cited as supported FC switches in a FMC config. McData, Cisco, other Brocade models and so on. Is someone there able to give me the right path on where to find documentation on how to cable/connect/use other switched than the 200E? The question comes because we're planning an extende FMC with DWDM switches and other appliances from Cisco and we could save a lot money (in connecting MC switches to DWDM devices...) using i.e. a superior Brocade model or a Cisco MDS. And again, what's about "dark side" of the fiber (not of the moon J). Apart the TR3552 on theory (and some practice) of optical network I was not able to found a doc/guide on, simplifying.... "where I need to link the LC/LC patch that comes from my MC switch? On which model/brand? What I've to ask to communication expert on the existing dark fiber and, over all, what I've to expect from him/her?" Thanks a lot PS) I've also tried to ask this at Prague NetApp Insight 2008 but I've got only...rumors...nothing concrete J

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RE: latency figures visible via SNMP?
by Buerger, Andreas 27 Nov '08

27 Nov '08

It historically logs that data by default, the default period for that is one week backwards, but I bet it's configurable. It helps us a lot, when somebody points the finger at us to look back what was going on during that time. ________________________________ From: Leeds, Daniel [mailto:dleeds@edmunds.com] Sent: Wednesday, November 26, 2008 8:52 PM To: Buerger, Andreas; A Darren Dunham Subject: RE: latency figures visible via SNMP? the perf advisor is real time right? ie it wont historically log this data and graph it later... ive used perf advisor in previous dfm releases and liked it but didnt enjoy having to sit and watch it for hours while waiting for intermittent issues to occur :) -- Daniel Leeds Manager, Storage Operations Edmunds, Inc. 1620 26th Street, Suite 400 South Santa Monica, CA 90404 310-309-4999 desk 310-430-0536 cell -----Original Message----- From: owner-toasters(a)mathworks.com on behalf of Buerger, Andreas Sent: Wed 11/26/2008 11:19 AM To: A Darren Dunham; toasters(a)mathworks.com Subject: RE: latency figures visible via SNMP? If you use dfm a look at the perf advisor might be helpful. Those data is collected via dfm, we use your mentioned figures as well to monitor vol specific statistics. You can enable/disable and configure the perf advisor options in dfm: perfAdvisorDisabledCounterGroups perfAdvisorEnabled perfAdvisorMaxMonitorThreads perfAdvisorPollInterval perfAdvisorShowAllViews perfAdvisorShowDiagCounters perfAdvisorTransport They improved the NMC java client a lot, it's a very helpful utility for specific perf monitoring with lots of detail. The SDK API also an option, but before putting a script together I would check, if the dfm offers enough for your needs. -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of A Darren Dunham Sent: Wednesday, November 26, 2008 6:59 PM To: toasters(a)mathworks.com Subject: Re: latency figures visible via SNMP? On Wed, Nov 26, 2008 at 01:22:33PM +0100, Stefan Funke wrote: > I didn't see that in SNMP either, but I've found something similar in > Manage Ontap SDK (http://communities.netapp.com/docs/DOC-1365): > [...] > > Thats far away from SNMP but maybe adoptable to your stats environment. Excellent, I'm not familiar with that, but I'll certainly investigate. I don't need SNMP per se. I'm just seeing how I can get the info from the filer with low overhead. I'd rather not fire off a lot of SSH sessions for what I need. So this might be fine. I have DFM, but I can't see that this value is gathered. Thank you for the pointer. -- Darren -- WINCOR NIXDORF International GmbH Sitz der Gesellschaft: Paderborn Registergericht Paderborn HRB 3507 Geschäftsführer: Eckard Heidloff (Vorsitzender), Stefan Auerbach, Dr. Jürgen Wunram Vorsitzender des Aufsichtsrats: Karl-Heinz Stiller Steuernummer: 339/5884/0020 - Ust-ID Nr.: DE812927716 - WEEE-Reg.-Nr. DE44477193 Diese E-Mail enthält vertrauliche Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser E-Mail ist nicht gestattet. This e-mail may contain confidential information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden. -- WINCOR NIXDORF International GmbH Sitz der Gesellschaft: Paderborn Registergericht Paderborn HRB 3507 Geschäftsführer: Eckard Heidloff (Vorsitzender), Stefan Auerbach, Dr. Jürgen Wunram Vorsitzender des Aufsichtsrats: Karl-Heinz Stiller Steuernummer: 339/5884/0020 - Ust-ID Nr.: DE812927716 - WEEE-Reg.-Nr. DE44477193 Diese E-Mail enthält vertrauliche Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser E-Mail ist nicht gestattet. This e-mail may contain confidential information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden.

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Re: Difference in # of files
by Barlow, Richard 27 Nov '08

27 Nov '08

Doesn't the folder itself count as an object? Are there also sub-folders? Sent from my Blackberry ------- Richard Barlow Senior Systems Engineer Chesapeake District 804.929.2500 ----- Original Message ----- From: Glenn Dekhayser <gdekhayser(a)voyantinc.com> To: toasters(a)mathworks.com <toasters(a)mathworks.com> Sent: Wed Nov 26 12:17:33 2008 Subject: Difference in # of files Someone out there has to know this. When I go into a folder in CIFS that only has files in it, it shows in the status bar 22 objects (files). I count, and verify. 22 files. I go up a folder, and right click the folder and do a ‘properties’, and it shows 23 files! I am NOT showing ~snapshot, and it shouldn’t matter if I did. My customer has the same problem, only the difference in his folder is 2 files (122 versus 120). Ideas anyone? _____________________________________________________________ Glenn Dekhayser | VP, Technology | VoyantStrategies O: (732) 335-1500 x514 | F: (732) 810-0378 AIM: gdekhayser | Yahoo: gdekhayser | http://www.voyantinc.com _____________________________________________________________

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latency figures visible via SNMP?
by A Darren Dunham 26 Nov '08

26 Nov '08

Looking through the mibs, I didn't see anything that seemed to be a match, but I thought I'd ask. Is there a way to grab the nfs latency figures via SNMP? netapp> stats show nfsv3 nfsv3:nfs:nfsv3_ops:3917/s nfsv3:nfs:nfsv3_read_latency:2254.40us nfsv3:nfs:nfsv3_read_ops:2022/s nfsv3:nfs:nfsv3_write_latency:420.56us nfsv3:nfs:nfsv3_write_ops:605/s I'm hoping it's in there and I've just missed it. Thanks! -- Darren

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Difference in # of files
by Glenn Dekhayser 26 Nov '08

26 Nov '08

Someone out there has to know this. When I go into a folder in CIFS that only has files in it, it shows in the status bar 22 objects (files). I count, and verify. 22 files. I go up a folder, and right click the folder and do a 'properties', and it shows 23 files! I am NOT showing ~snapshot, and it shouldn't matter if I did. My customer has the same problem, only the difference in his folder is 2 files (122 versus 120). Ideas anyone? _____________________________________________________________ Glenn Dekhayser | VP, Technology | VoyantStrategies O: (732) 335-1500 x514 | F: (732) 810-0378 AIM: gdekhayser | Yahoo: gdekhayser | http://www.voyantinc.com _____________________________________________________________

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