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Re: nfsv4/parallel NFS bugs
by Scott Eno 03 Dec '12

03 Dec '12

This version? Linux automount version 5.0.5-54.el6 Directories: config dir: /etc/sysconfig maps dir: /etc modules dir: /usr/lib64/autofs Compile options: DISABLE_MOUNT_LOCKING ENABLE_IGNORE_BUSY_MOUNTS WITH_HESIOD WITH_LDAP WITH_SASL LIBXML2_WORKAROUND WITH_LIBTIRPC On Dec 3, 2012, at 10:03 AM, Mark Flint <mf1(a)sanger.ac.uk> wrote: > We had to upgrade to autofs5 to get round that issue, but I haven't tried V4 yet <gulp> :) > > > `Mark > > ext:6944 > > > > > On 3 Dec 2012, at 15:01, Scott Eno wrote: > >> >> Sounds like what they are seeing. The mount is obviously gone as writes are going to local disk, but the OS seems to insist the mount is still there. >> >> That's as I understand it, anyway. >> >> >> On Dec 3, 2012, at 9:45 AM, Mark Flint <mf1(a)sanger.ac.uk> wrote: >> >>> Just as an aside to the mount problem, are you having autofs issues underneath? i.e. the mount 'going away' >>> but still being in the mtab? >>> >>> >>> `Mark >>> >>> ext:6944 >>> >>> >>> >>> >>> On 3 Dec 2012, at 14:23, Scott Eno wrote: >>> >>>> >>>> Are there any NetApp bug reports you can point me to? >>>> >>>> We aren't using any of the "higher brain functions" of NFSv4 like file ownership and kerberos. UNIX admins started using it to fix a problem they saw on a volume shared by, up to, 17 hosts. Under NFSv3, when one host would write a file to the volume, other hosts wouldn't see the file. This problem goes away with NFSv4 mounts. Other problems, however, are appearing. A host will lose a mount to the NetApp and start writing to local disk. The RHEL OS, however, is adamant that the mount is still there. Very strange. >>>> >>>> They are also seeing "Bad Sequence ID" errors in the RHEL logs, but both NetApp and Red Hat claim this issue was resolved in earlier versions of their respective OS's. >>>> >>>> Now I'm wondering if 8.1.2 contains enough fixes for NFSv4 to cover our issues as well. >>>> >>>> >>>> >>>> On Dec 3, 2012, at 9:13 AM, tmac <tmacmd(a)gmail.com> wrote: >>>> >>>>> Should have mentioned the bugs that I have seen are fixed in 8.1.2 >>>>> >>>>> In my environment....performance related bugs. I was fine with a couple dozen hosts... >>>>> opening the floodgates to a couple hundred nfsv4 hosts broke. >>>>> Had to revert to nfsv3 (not a big deal, just revert the autofs table I was using). >>>>> >>>>> --tmac >>>>> >>>>> Tim McCarthy >>>>> Principal Consultant >>>>> >>>>> >>>>> >>>>> Clustered ONTAP Clustered ONTAP >>>>> NCDA ID: XK7R3GEKC1QQ2LVD RHCE5 805007643429572 NCSIE ID: C14QPHE21FR4YWD4 >>>>> Expires: 08 November 2014 Expires w/release of RHEL7 Expires: 08 November 2014 >>>>> >>>>> >>>>> >>>>> >>>>> On Mon, Dec 3, 2012 at 9:07 AM, Scott Eno <s.eno(a)me.com> wrote: >>>>> Hi, >>>>> >>>>> Your mentioned in the cluster thread of NFSv4 bugs caught my eye. Can you elaborate on that? We are moving RHEL 6.x servers to NFSv4 and a few odd issues have popped up (Bad Sequence ID errors, losing mounts). >>>>> >>>>> Running 8.1.1P1 across the board. >>>>> >>>>> On Dec 2, 2012, at 8:57 PM, tmac <tmacmd(a)gmail.com> wrote: >>>>> >>>>>> To the best if my knowledge, there is still no in place upgrade to clustered ontap. You must migrate to different heads. >>>>>> >>>>>> With that said, I have three different clusters... One large (4 fas 6280's) in my lab, one small(2 x fas 3240's) on my regular network and one more (2 x fas6080) used as backup or inter cluster snap mirror. >>>>>> >>>>>> Still 8.1.1p1d1 >>>>>> >>>>>> All I can say right now is watch out for a few nfsv4/parallel NFS bugs. Other than that... It had been real nice. >>>>>> >>>>>> On Dec 2, 2012 7:57 PM, "Peter D. Gray" <pdg(a)uow.edu.au> wrote: >>>>>> Hi people, >>>>>> >>>>>> I am contemplating going to cluster mode on our >>>>>> 3170A and was wondering what peoples experience has been? >>>>>> >>>>>> Any problems or gotchas? >>>>>> >>>>>> We are on 8.1.2. >>>>>> >>>>>> Regards, >>>>>> pdg >>>>>> >>>>>> _______________________________________________ >>>>>> Toasters mailing list >>>>>> Toasters(a)teaparty.net >>>>>> http://www.teaparty.net/mailman/listinfo/toasters >>>>>> _______________________________________________ >>>>>> Toasters mailing list >>>>>> Toasters(a)teaparty.net >>>>>> http://www.teaparty.net/mailman/listinfo/toasters >>>>> >>>>> >>>> >>>> _______________________________________________ >>>> Toasters mailing list >>>> Toasters(a)teaparty.net >>>> http://www.teaparty.net/mailman/listinfo/toasters >>> >>> >>> -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. >> > > > -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.

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On cluster mode
by Peter D. Gray 03 Dec '12

03 Dec '12

Hi people, I am contemplating going to cluster mode on our 3170A and was wondering what peoples experience has been? Any problems or gotchas? We are on 8.1.2. Regards, pdg

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NetApp / AWS Alliance
by Steven Kreuzer 30 Nov '12

30 Nov '12

So NetApp just announced this: http://www.netapp.com/us/company/news/news-rel-20121128-693554.html I am not familiar with Amazon's offerings, but it sounds like you can stick a filer in certain datacenters have your clients continue to access a primary filer via nfs or cifs and then snapmirror that filer to a secondary filer that magically writes it to the cloud? The details are a bit light from what I have been abe to find online, so I am curious if anyone has any additional information. Thanks

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SMI-S support within recent NetApp filers/OnTap
by John Constable 30 Nov '12

30 Nov '12

Hey folks, Intrigued by the possibility of this, and NetApp appear to be on board (albeit at 1.2 rather than 1.6 version of the spec), but wondering if anyone has any real world experience of trying to use it with their products, particularly cross platform i.e. not Powershell ( I've nothing against Powershell* but SMI-S has the possibility of OS independence), and cross vendor? https://communities.netapp.com/docs/DOC-1055 cheers John *some of my best friends are Powershell coders :-) -- John Constable, Storage Team x6924 (+44 1223 496924) Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, UK -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.

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cf.takeover.on_network_interface_failure question
by Ray Van Dolson 21 Nov '12

21 Nov '12

Hello; FAS2050 running with ONTAP 7.3.5. If we set cf.takeover.on_network_interface_failure to "on" and the failure policy to "any_nic", and network connectivity is _lost_ on a partner-configured NIC (but the NIC hasn't necessarily "failed"), is this sufficient to trigger a takeover? We had a situation today where a patch panel or switch issue caused one of the NICs to trigger a "Link down". We didn't have the network interface failure takeover option configured, but I am wondering if this could have saved us. Thanks, Ray

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LUNs lost initiator setting after a power outage
by Andrew Laurence 16 Nov '12

16 Nov '12

So, this was fun. After a power outage on Saturday, our Exchange 2010 mailbox servers (all hosted on VMWare ESX) came up with only some of their LUNs. These LUNs are hosted on our HA-paired FAS2040 (OnTAP 7.3.4); each LUN hosts an Exchange database. Try as we might, we couldn't get these LUNs to mount. After opening a support case with each of NetApp and Microsoft, and conferencing in both engineers, and several hours, the Microsoft engineer finally suggested we check the target LUNs on the filer. Turns out that each of the missing LUNs no longer had the setting for the mailbox servers' initiators. After checking that box the LUNs mounted without issue. Anyone seen this happen before? The NetApp engineer didn't have any immediate ideas, and I haven't had luck finding a match in the list archives or in NOW. Thanks, Andrew -- Andrew Laurence Office of Information Technology atlauren(a)uci.edu University of California, Irvine

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VIF Issues
by Nail, Thomas E 16 Nov '12

16 Nov '12

All, I am needing to re-order some of the virtual interfaces on an HA pair of 3170s running OnTap 7.3.7. The current configuration has: 2 x 1 Gbe interfaces in an LACP 'vif_r0' 2 x 1 Gbe interfaces in an LACP 'vif_r1' 1 second-level vif, vif_rsec, comprised of vif_r0 and vif_r1. What I want to (eventually) get to is: 4 x 1 Gbe interfaces in an LACP vif_r0 And I don't want to take a downtime to do it. Unfortunately, with an HA pair, this isn't going to be possible (I don't think…).Once a failover and configuration change is made, the takeover partner doesn't have a "correct" interface to give back to, since it's "partner" interface name has changed. So what I'm proposing is: Leave the second-level vif alone. Remove the physical interfaces from vif_r1 and put them in vif_r0. The question I have is: can I fully de-populate a vif of physical interfaces? Will it stick on the last one? I don't have anywhere to test this, so I'm hoping someone with some spare capacity can either test it and let me know if it will work. Thanks in advance, -=Tom Nail

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how significant / non-optimal path error
by Stuart Kendrick 12 Nov '12

12 Nov '12

How substantially can this affect performance? scsitarget.partnerPath.misconfigured:error]: FCP Partner Path Misconfigured - Host I/O access through a non-primary and non-optimal path was detected. We have a two-node FAS3020 cluster running 7.2.4, serving two clients via Fibre Channel. [More precisely, four clients: two pairs of Active/Standby SQL Server clusters. A pair of Fibre Channel switches provide the fabric for this tiny SAN.] Cleverly, we've configured the clients to cross the cluster interconnect in order to reach their shelves. i.e. under normal operation, Client1's traffic must traverse the fabric, ToasterA, the cluster interconnect, and ToasterB, before reaching its shelves. Conversely, Client2's traffic must traverse the fabric, ToasterB, the cluster interconnect, and ToasterA before reaching its shelves. Occasionally, we see the error message above in the logs ... sometimes just once/week, occasionally twice/day. We'd like to ignore this ... we hope to retire the installation sometime next year ... but on the other hand, if this degrades performance substantially, then we'll reconsider. ? --sk Stuart Kendrick FHCRC

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no thread since 10/31/2012
by Uddhav Regmi 12 Nov '12

12 Nov '12

Just making sure... From: toasters-bounces(a)teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Sto RageC Sent: Wednesday, October 31, 2012 11:18 PM To: Ray Van Dolson Cc: toasters(a)teaparty.net Subject: Re: Clarification on CIFS Permissions (ONTAP 8.0.2P3) On Wed, Oct 31, 2012 at 5:45 PM, Ray Van Dolson <rvandolson(a)esri.com> wrote: Where is this default "Everyone" permission set set by default? It doesn't seem to be tied to the CIFS share security settings so I presume it's an NTFS qtree default? Thanks, Ray Yes, the NTFS security defaults to Everyone when a NTFS qtree is created. We normally don't set the permissions at the share level, it is set at the security level on NTFS. The first step is to remove Everyone, add a share administrator - full control and then the user groups with modify. -HTH

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Looking for Source
by Carolyn Chambers 09 Nov '12

09 Nov '12

Hello, I am looking for source code for the old symlink_tool.exe tool. I understand that it is not supported but it is very handy to have around. I have an idea for its next life... Thanks, Carolyn ________________________________ Carolyn Chambers 972-679-4211 - cell 972-767-0555 - fax 972-578-2708 - office cc(a)storageassessments.com<mailto:cc@storageassessments.com> 1255 W. 15th Street, Suite 825 - Plano, TX 75075 [cid:image001.png@01CDBE9F.F83542D0]

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