toasters March 2015

toasters@lists.teaparty.net

33 participants
27 discussions

How To Use AutoSupport MANAGEMENT_LOG And PERFORMANCE_LOG Emails As A Partner
by Mike Brown 17 Mar '15

17 Mar '15

Can anyone answer this question for me (link to NetApp communities post)? http://community.netapp.com/t5/Data-ONTAP-Discussions/How-to-use-AutoSuppor… Thanks, Mike -- Mike Brown michael.b.brown3(a)gmail.com Blog: http://VirtuallyMikeBrown.com Twitter: http://twitter.com/VirtuallyMikeB <http://twitter.com/#%21/VirtuallyMikeB> LinkedIn: http://linkedin.com/in/michaelbbrown

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Flexscale lopri_blocks
by Edward Rolison 17 Mar '15

17 Mar '15

I'm currently contemplating caching on my filers. Specifically - setting those 3 flags on a flexscale cache appropriately. I _think_ given the workload I'm putting through one of my set of filers, enabling lopri_blocks is beneficial When I do, a 'stats show -p flexscale-access' gives me more disk reads replaced, and a better cache hit ratio. However I'm also looking at wafl:wafl:read_io_type and seeing that mostly - my cache module is only servicing about 10% of the IOPs going through my system anyway. Of the remainder, it's a pretty even split between disk/cache. And with 'lopri_blocks' set to on, my cache is churning data faster - but with it off, hit rate drops to <10%. I'm wondering if anyone can offer suggestions as to a good way to compare the two states - filer side. Are there any metrics I _should_ be looking at, that I'm not? Primarily looking at: - total IOPs (there's only one volume on this filer) - response time. - Disk utilisation (definitely increases when lopri_blocks is off). - cache stats as above. CP types - mostly this system is doing log_full CPs, and is getting a fairly steady stream of RW IOPs. Most IOs are NFS getattr and lookups though, which are mostly metadata. Of 100K iops, it's about 90% non-RW and 5% read, 5% write. I think I'm right in saying that these metadata IOs are going to be fairly small and thus served out of RAM (mostly) anyway. I'm also (re) reading TR-3832 - Flash Cache best practice. This is a little more vague than I'd like on figuring out whether 'lopri_blocks' will actually be useful. I _think_ they are based on a better hit rate, and a better reads-replaced rate. Any read replaced is one that's served from a faster tier, and is therefore 'better' objectively, right?

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Re: SSLv3, POODLE, and NetApp...
by James Andrewartha 15 Mar '15

15 Mar '15

Yes, I had problems with OnCommand Host, ie my VMware backups stopped, when I disabled SSLv3 last week. Since it's no longer supported I just re-enabled it again. My guess is it's related to old Java? Also, while looking at it I noticed that the SSL certificates had expired some years ago but nothing complained or stopped working. James Sent from my Samsung device -------- Original message -------- From: RM <RM(a)richardmay.net> Date: 2015/03/15 05:41 (GMT+08:00) To: toasters(a)teaparty.net Subject: SSLv3, POODLE, and NetApp... My apologies if this has been discussed. I searched the archives and didn’t come up with anything. Customers are asking about disabling SSLv3 due to the POODLE vulnerability. Looking over the kb articles, NetApp’s guidance is rather sparse. Has anyone disabled SSLv3 in their storage environment and if so, what did you see? I have a preliminary report that the vSphere side of things has some issues when SSLv3 is disabled but I don’t have reliable details yet. Best to all, RM

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SSLv3, POODLE, and NetApp...
by RM 14 Mar '15

14 Mar '15

My apologies if this has been discussed. I searched the archives and didn't come up with anything. Customers are asking about disabling SSLv3 due to the POODLE vulnerability. Looking over the kb articles, NetApp's guidance is rather sparse. Has anyone disabled SSLv3 in their storage environment and if so, what did you see? I have a preliminary report that the vSphere side of things has some issues when SSLv3 is disabled but I don't have reliable details yet. Best to all, RM

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Symantec Enterprise Vault + OnTAP based DR
by Momonth 12 Mar '15

12 Mar '15

Hello, I'm currently working on implementing DR for Symantec Enterprise Vault (EV), all EV data partitions are on NetApp filer (EV's SQL instance is out of the scope here), being accessed via FCP. I was hoping there was EV plugin for NeApp SnapManager, but it's not the case, also Symantec don't provide anything in that regard. I wonder if anybody looked at EV + SnapMirror integration? What were your approaches? My idea so far: 0. Setup SM jobs for EV volumes. 1. Set EV into 'backup mode'. 2. Trigger SM update for the EV volumes. Steps 1. ans 2. can be triggered from a powershell script, I think. Cheers, Vladimir

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CDOT CIFS shares import?
by Basil 12 Mar '15

12 Mar '15

Does anyone know of a clean way to import CIFS shares? In 7-mode, I'd manipulate the /etc/cifsconfig_share.cfg directly if I ever needed to, but in CDOT, there's no such thing. I'm trying to plan a cutover from an EMC NAS to a Netapp SVM, and once we've got the shares on the Netapp configured and have done our final robocopy, I need to unjoin the SVM from the domain and rejoin it with the computer account of the old EMC. Doing this causes all the shares to be deleted. If there's no clean way to do this, I'll be building a command file of vserver cifs share create commands, but I'd really prefer not to have to. Thanks!

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CMOD /etc/messages of SVM
by Iluhes 10 Mar '15

10 Mar '15

Can I still mount what used to be /vol/vol0, aka root volume from NFS SVM and read /etc/messages?

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Shelf recognition problem with DS14s
by Jeff Cleverley 10 Mar '15

10 Mar '15

Greetings, My apologies for the long email but I'm trying to put in as many details as possible. I have some DS14 shelves attached to some 6290s running 8.1.2P4 7-mode. I've run into an odd problem that I think will require a takeover/giveback, but wanted to see if I've missed anything. I'm pretty sure the problem is not the shelf IDs :-) Controller A sees all disks and shelves through the loop just fine. Controller B sees both paths, but for the shelf number and bays, it only shows question marks for those. All connections are on PCI HBAs, nothing is using the onboard ports. Here is an example of the storage show disk -p command from Controller B: 9d.82 B 8d.82 A ? ? Here is the same path on controller B using a sysconfig -a: 82 : 0.0GB 0B/sect (Startup failed.) As you can see, it sees device 82 down both paths, but it can't identify the shelf or the drive bay. When I look on controller A, it has valid information. If I at a disk from controller B, it won't see any information on the disk like serial number, disk size, firmware, etc. Controller A sees everything just fine and does not have any Startup failed messages. If I do a storage show disk -n, controller A sees 84 drives, but controller B only sees 4. Those 4 don't show correctly either. If I manually pull a drive and reseat it, it will show up as an unowned drive with no valid shelf or bay slot. It will show up correctly in the sysconfig -a output. Here are things I've tried with no luck. 1. New FC ports on the filer side. 2. Reseating the shelf interface cards on both shelves 1 and 6 where the FC connections come in. 3. New fibre cable between shelf and filer. 4. Swapped controller A & B connection in shelf #1. Controller A sees everything correctly down the same path that controller B doesn't. Controller B doesn't see anything correctly down the path controller A was using and seeing everything. 5. Manually pulled a drive from a shelf and plugged it back in. 6. Verified I am not at any maximum number of drives or shelf count per cluster limit. 7. Verified both heads have the same shelf/drive firmware and qual_devices packages. The only thing I can think of is somehow the registry or something on controller B has corrupted. Since I have a head in an odd condition for this loop of disks only I'm a little reluctant to do a takeover and giveback. What if it comes back and doesn't recognize any of its drives :-) Thanks, Jeff -- Jeff Cleverley IT Engineer 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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Re: 7 mode admin host (rsh) and CMOD
by Iluhes 04 Mar '15

04 Mar '15

Thank you all who reposned on rsh and ssh question, I did see rsh in firewall policy so I was woundering if that is still possible. It sound like everyone is using the passwordless ssh, right? > On Mar 4, 2015, at 11:11 AM, "Singh, Tejinder" <Tejinder.Singh(a)netapp.com> wrote: > > You configure rsh access to cluster: > > cluster1::> system services firewall policy clone -policy mgmt -new-policy-name mgmt1 > > cluster1::> system services firewall policy create -policy mgmt1 -service rsh -action allow -ip-list 0.0.0.0/0 > > cluster1::> network interface modify -vserver cluster1 -lif cluster_mgmt -firewall-policy mgmt1 > > cluster1::> sec login create -vserver cluster1 -username admin -application rsh -authmode password -role admin > > On the linux machine, make sure you are using the normal rsh /usr/bin/rsh and disable the firewall on the linux machine. > > linux: service iptables stop > > linux: /usr/bin/rsh -l admin:Password 192.168.0.101 "net int show" > > Cheers, > Tej > > > From: toasters-bounces(a)teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of tmac > Sent: Wednesday, March 04, 2015 9:54 PM > To: Iluhes > Cc: Toasters > Subject: Re: 7 mode admin host (rsh) and CMOD > > For cDOT, you want to stick with SSH. I am not even sure if rsh is support to cDOT. > I suspect it is, and it is treated much like telnet. > > You would need to dig into the guides to see if it will work. > > --tmac > > Tim McCarthy > Principal Consultant > > > > > > On Mon, Mar 2, 2015 at 10:24 PM, Iluhes <iluhes(a)yahoo.com> wrote: > Thanks Steve, Tim, > So passwordless ssh is the only option? No rsh? > > > On Monday, March 2, 2015 8:03 PM, tmac <tmacmd(a)gmail.com> wrote: > > > That should do it. I have done it before and it works fine. > > --tmac > > Tim McCarthy > Principal Consultant > > > > On Mon, Mar 2, 2015 at 8:33 PM, Klise, Steve <Steve.Klise(a)wwt.com> wrote: > I don’t think its the same.. Did you check this KB? > > https://kb.netapp.com/support/index?page=content&id=1012542&locale=en_US&ac… > > Thanks > > Steve Klise > > > From: Iluhes <iluhes(a)yahoo.com> > Reply-To: Iluhes <iluhes(a)yahoo.com> > Date: Monday, March 2, 2015 at 3:33 PM > To: "toasters(a)teaparty.net" <toasters(a)teaparty.net> > Subject: 7 mode admin host (rsh) and CMOD > > Can I have rsh admin linux host for CMOD arrays the same way I had for 7-mode? > If yes, how? > > _______________________________________________ > Toasters mailing list > Toasters(a)teaparty.net > http://www.teaparty.net/mailman/listinfo/toasters > > > > > > > The information contained in this message and in any attachments is privileged and confidential, and may contain personal data. It is intended only for the use of the addressee. You should not read, copy, use, or disclose this information without authorisation. If you are not the intended recipient of this message, please e-mail the sender immediately and delete this message. Any unauthorised dissemination, disclosure, copying or use of the contents of this message is strictly prohibited and may result in legal action, including civil or criminal proceedings. > > NetApp-Disclaimer-v1.1

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7 mode admin host (rsh) and CMOD
by Iluhes 04 Mar '15

04 Mar '15

Can I have rsh admin linux host for CMOD arrays the same way I had for 7-mode?If yes, how?

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toasters March 2015