toasters April 2015

toasters@lists.teaparty.net

45 participants
27 discussions

NetApp API authentication
by Edward Rolison 01 Mar '16

01 Mar '16

Having started to review some of our filer automation scripts, I'm starting to look in a bit more detail at the API. My first conclusion is - the perl SDK doesn't actually seem to do anything much - it seems to be a reimplementation of LWP and and XML Parser. Given I have LWP and XML::Twig installed, and am making API calls just fine, is there anything I'm missing here? Aside from that though - authentication types. I currently use ssh public-private key pairs, in a trusted account on a management station to enable 'doing stuff' with filers. It _looks_ like my only option with the API is to create a designated service account, and assign permissions... and then embed a username and password in a script somewhere. That just doesn't sit well with me - I like what ssh-agent will do in 'unlocking' key files, and I don't like embedding (potentially privileged) usernames and passwords ... anywhere. Does anyone have a better solution than a couple of designated API users (privileged and read only) with a file somewhere embedding their username and password? Does anyone have a better approach?

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API calls to replicate a 'df'
by Edward Rolison 03 Jul '15

03 Jul '15

I'm currently fiddling with a project using the ONTAPI (perf stats monitoring sort of thing). What I'm wanting to do is reproduce the information from 'df' and 'df -s'. Doing well so far, because the api 'volume-list-info' seems to have most of the information I want. There's just one thing missing - how much of the 'snap reserve' I'm actually using. I can't seem to find it in either that, or the 'snapshot' counters. I would ideally be able to do this without having to do a per-volume calculation, because one of the things I'm hoping to do is support a lightweight proxy client that 'just' fetches source XML for processing on a server. Or is there a way I can calculate this from the size/used/available in the volume-list-info? Thanks, Ed

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cluster mode 8.2.3 / 8.3 dynamic home directory change
by Tomlinson, Thomas 30 Jun '15

30 Jun '15

Hi Toasters, I just stumbled upon a change in 8.2.3/8.3 with respect to the dynamic home shares and curious to get other folks views on it. Currently we make extensive use of the traditional static 7mode home directory share, cifs.homedir (\\filername\cifs.homedir<file:///\\filername\cifs.homedir>). This is further referenced behind DFS as a single link name with multiple targets. It works great, allows for all users to have a static username defined in AD, allows migration of filers without massive user updates, DR, etc. So life is good, or as good as it can be managing windows home directories. We're now slowly staring to lifecycle 7mode clusters to cmode, which has had a few hiccups, but I expected that . Prior to 8.2.3, you can replicate 7mode home directory functionality perfectly, even making up whatever static name you want. Fast forward to just recently when I was configuring a small cluster at a remote location. 8.2.3, sure slap that on. Configure the dynamic home directories, sure,errr.... no. A seemingly innocent entry in the release notes for 8.2.3 states that static names are no longer acceptable. A previously configured static share is brought forward and continues to function but you can no longer create new ones. Any new dynamic home share has to have the username in it (%w or %u). Needless to say this is a major change to our environment. Automation changes, massive AD updates (close to a nightmare with our IT organization) and a complete invalidation of our DFS namespace structure for home directories. Is anyone else similarly affected by this? I'm struggling to understand what twisted logic guided this coding decision. Thomas Tomlinson Thomas.tomlinson(a)supervalu.com<mailto:Thomas.tomlinson@supervalu.com> Desk: 208-685-8404 Cel: 208-991-3704

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Vol 100% - which VM?
by Fletcher Cocquyt 19 May '15

19 May '15

Never seen this before FAS3250 ONTAP 8.1.2 at 2am the volume hosting 110 VMs fills up and starts alerting Get the call and delete several snapshots to take it to 83%, reboot the 110 VMs ;( I have lots of tools (splunk, inmon etc) they are not able to show why this volume filled up ideas?

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cDOT 8.2.1P3: removing PSU from a disk shelf went unnoticed for OCUM / Autosupport
by Momonth 06 May '15

06 May '15

Hi, So I've been testing cDOT monitoring for a while now. I'm using OCUM as my primary source of alerts, but also deploying NetApp SDK based checks in nagios. Here is what I noticed on (almost) "live" 6 nodes cDOT cluster, autosupport / OCUM configured and tested: 1. Take a cDOT node in Multi-Path HA / ACP Full Connectivity config (I'd guess this is what most people run). 2. Take a random disk shelf configured on the node in the cluster, it was DS2246 SAS 10K RPM 1.2TB disks in my case. 3. Remove one PSU on the disk shelf. The results: 1. It does not generate Autosupport message about the PSU missing. 2. OCUM doesn't trigger an alert. The only sub-system that noticed the issue is 'event': Time Node Severity Event ------------------- ---------------- ------------- --------------------------- 4/30/2015 12:11:01 na101node-1a WARNING ses.status.psWarning: DS2246 (S/N SHFHU1427000502) shelf 20 on channel 0b power warning for Power supply 1: not installed. This module is on the rear of the shelf at the bottom left. But it didn't go any further. Has anyone else seen this behavior? I wonder if I'm missing some settings etc .. Cheers, Vladimir

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NetApp and VMware Access Path Down (Dead)
by Mike Michalakis 30 Apr '15

30 Apr '15

Has any experienced to following especially with a VMware environment. The storage system is tugging along happily and then you get High request for resources, resulting in CPU and Disk going about 90%. This isn't my question. My question is; within the VMware environment you get High Latency, then "Dead Path" and in the vmkernel.log high "WORLD" counters, this is normally resolved via a reboot of the VMhost, after the APD the NetApp resources go backdown to 0% until the next peak. Is the above considered normal, with high utilization systems, if not what should the behaviour be? OnTap is 8.2.1P2 7-Mode.

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Multiple snapvault snapshots and schedules.
by Jeff Cleverley 29 Apr '15

29 Apr '15

Greetings, I've got a situation where a backup relationship does a nightly backup and a weekly backup. Both go to the same destination. The snapshots are named with the _nightly and _weekly tags. This is file system data and not luns. The problem is not fractional reserve :-) I'm assuming the snapshots are still based on one another and each doesn't have it's own baseline. Is this correct? The problem is someone at a remote site appears to have done a drag and drop which generated ~2 TB of "new" data. The remote site has a very limited WAN. The completion of the current backup session will run for ~2 month before it completes. If I have to do a new baseline, it will also take about that long. Since the snapshots got out of hand, it caused the file system to grow beyond the designated size the volume guarantee has been disabled, and it actually filled up the containing aggregate. I'm hoping to be able to delete one of the SV snapvaults to free space and get things in line space wise. Unfortunately I'm expecting I'll still have to let a 2 month backup run one way or another. If I'll end up with a new baseline anyway, I may as well nuke everything now and start it. At least I'll be able to delete some snapshots and free space. Thanks, Jeff -- Jeff Cleverley IT Engineer 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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Berk Comm...
by Jeffrey Mohler 28 Apr '15

28 Apr '15

Is there a primary contact for BerkComm on toasters? If there is..Email me separately please. :) _________________________________Jeff MohlerTech Yahoo, Storage Architect, Principal(831)454-6712TW: @PrincipalYahooYM: Supra89ta

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cDOT cluster kernel-service
by Weber, Mark A 28 Apr '15

28 Apr '15

Anyone have a 4-node 2240 cluster running 8.2.x? If so, could you tell me if failover says enabled or disabled when you do a "cluster kernel-service show" in diag mode. I've had a performance case open for months on this cluster and I noticed recently that this cluster says failover is disabled but our 4 node 3220 cluster says enabled. LCNA2::> set d Warning: These diagnostic commands are for use by NetApp personnel only. Do you want to continue? {y|n}: y LCNA2::*> cluster kernel-service show Node State Ver Failover Dump FSM-State ---------- -------- ---- --------- --------- --------- LCNA2-01 enabled 1 disabled enabled CLAM_CORE_ST_NONMASTER_WAITING_FOR_BACKOFF_TIMEOUT LCNA2-02 enabled 1 disabled enabled CLAM_CORE_ST_NONMASTER_WAITING_FOR_BACKOFF_TIMEOUT LCNA2-03 enabled 1 disabled enabled CLAM_CORE_ST_MASTER_WAITING_FOR_HB_TIMEOUT LCNA2-04 enabled 1 disabled enabled CLAM_CORE_ST_NONMASTER_WAITING_FOR_BACKOFF_TIMEOUT 4 entries were displayed. Thanks mark

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Re: Adding DS2246 to FAS2240-2 with existing DS4243
by Francis Kim 28 Apr '15

28 Apr '15

Just be sure to document your cabling carefully, so someone how comes after you down the road, including yourself, to add another shelf will know that your latest DS2246 in your stack is really next-to-the-last in cabling terms. Don’t expect cabling to look pretty after you insert your shelf into the middle of the stack. I’ve recently had ACP housekeeping complain about missing IOMs, even though cabling was all correct after the shelf addition. If disabling and reenabling ACP and cable pull/inserts don’t clear it, you might have to actually pull the IOM and reseat it. All non-disruptive operations as long as you start out from Multipath HA state. Francis Kim | Engineer 510-644-1599 x334 | fkim(a)berkcom.com<mailto:fkim@berkcom.com> BerkCom | www.berkcom.com<http://www.berkcom.com/> NetApp | Cisco | Supermicro | Brocade | VMware On Apr 27, 2015, at 2:09 PM, Aaron Lewis <aaron(a)ivoxy.com<mailto:aaron@ivoxy.com>> wrote: Thanks, Francis. I’ve done a lot of shelf adds, but never inserted into an existing stack. So, I was looking for confirmation from the group. I knew the DL was the quickest way to get an answer that I could trust. Cheers, Aaron From: Francis Kim Date: Monday, April 27, 2015 at 2:04 PM To: Aaron Lewis Cc: "toasters(a)teaparty.net<mailto:toasters@teaparty.net>" Subject: Re: Adding DS2246 to FAS2240-2 with existing DS4243 Yes, you can absolutely hot-add the new DS2246 into your disk stack to get to the configuration you want. The only thing to be careful is to maintain at least a single path at all times. If you want details, I can send you the decabling and recabling sequence for your stack. Francis Kim | Engineer 510-644-1599 x334 | fkim(a)berkcom.com<mailto:fkim@berkcom.com> BerkCom | www.berkcom.com<http://www.berkcom.com/> NetApp | Cisco | Supermicro | Brocade | VMware On Apr 27, 2015, at 1:45 PM, Aaron Lewis <aaron(a)ivoxy.com<mailto:aaron@ivoxy.com>> wrote: Hi all, I have a FAS2240-2 with the following configuration: Existing Stack: 1. DS2246 disk shelf (internal) 2. DS2246 disk shelf (external) 3. DS4243 disk shelf I need to add a new DS2246 to this system and want to maintain the single transition between 6G and 3G so it looks like this: Existing Stack: 1. DS2246 disk shelf (internal) 2. DS2246 disk shelf (external) 3. NEW DS2246 4. DS4243 disk shelf Is it possible to hot-add the DS2246 into the existing stack? The Installation Guide gives the process for adding it to the bottom of the stack, but doesn't explicitly prohibit inserting the shelf and it seems like you could with Multipath HA. Thanks, Aaron _______________________________________________ Toasters mailing list Toasters(a)teaparty.net<mailto:Toasters@teaparty.net> http://www.teaparty.net/mailman/listinfo/toasters

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toasters April 2015