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13531 discussions

can't shoot SSH commands to a filer
by Randy Rue 20 Feb '13

20 Feb '13

Hello All, I have a 3020 running 7.2.4 that is failing to respond to SSH commands when they're sent one at a time. I can ssh in as root and get a shell via putty or ssh. But if I try to send an "uptime" command I get either "FATAL ERROR: Server unexpectedly closed network connection" (from plink) or "Connection to carbon-b closed by remote host." from ssh. Also, when I'm logged in interactively, I see lots of this blowing across the console: carbon-b> receive signals: rsh protocol failure in circuit setup. 300 received receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received receive signals: rsh protocol failure in circuit setup. 300 received receive signals: rsh protocol failure in circuit setup. 300 received receive signals: rsh protocol failure in circuit setup. 300 received receive signals: rsh protocol failure in circuit setup. 300 received Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. Try again. Try again. Try again. Try again. Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. Try again. Try again. Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. Try again. Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received Try again. Try again. Try again. Try again. Try again. Try again. receive signals: rsh protocol failure in circuit setup. 300 received We have lots of processes (monitoring, alerting, scripted processes) that touch this box via non-interactive SSH, is each of these errors some failed attempt to connect? If I understand the inner workings correctly, pretty much all admin traffic on a filer channels into an internal RSH pipe. Are there different pipes for interactive and non-interactive SSH? I have tried stopping and restarting SSH (options ssh.enable off and on). Also RSH (options rsh.enable off and on). No love. Anyone have any ideas? Randy Seattle

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Migration of Oncommand Host services
by KICKEN Ben (INT/TEI) 15 Feb '13

15 Feb '13

Greetings toasters, I am looking for migration procedures for the Oncommand Host Services, installed on the DFM/OCUM server (which is a VM) to the vCenter server (also a VM), without losing all configured datasets, protection and provisioning policies which Snapvault primary data to secondary storage. I was thinking of installing Host Package 1.2 on vCenter server and authorize it on the OCUM host - which will present all Vmware objects twice in the OC COnsole. Next unregister the OCUM hostservice (dfm hs unregister). Will all abovementioned datasets and policies still be available and active, on the hostservice running on the vCenter Host? Unfortunately I have no test environment for simulating this before doing this in real life; asked this in Communities and created a case at netapp support, but no good suggestions yet. thanks for any input Ben

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Live disk shelf removal.
by Jeff Cleverley 13 Feb '13

13 Feb '13

Greetings, Is there a way to remove DS14 MK4 shelves from a running cluster? I need to look into isolating some drives and removing some shelves and would like to do it without having to halt the cluster. This is a 7.3.5.1 Ontap cluster on FAS6080s. Thanks, Jeff -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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HTTP & CFO
by Ray Van Dolson 13 Feb '13

13 Feb '13

ONTAP 8.0.x with httpd.enable set and virtual hosting configured via httpd.hostprefixes. Our PRD filer in question has two controllers in CFO mode which works fine for NFS/CIFS services. Will the HTTP services fail over properly as well? Tried to test this with the ONTAP 8.0.4 simulator, but you can't test CFO there apparently. Am especially curious about the httpd.hostprefixes settings and if they'll fail over gracefully. Thanks, Ray

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can't touch a CIFS folder?
by Randy Rue 12 Feb '13

12 Feb '13

Hello All, Got a subfolder on a CIFS only vfiler (NTFS qtree) that I can't open, delete or rename, even though I'm connected as a user that's a member of the local administrators for the vfiler. From a windows host if I right-click the folder and choose properties there isn't even a permissions tab. Can't seize ownership. Can't open the folder (denied). >From a cifs-mounted linux host I also strike out but with odd errors. [root@host]# mv _DIVA\ templates delete mv: cannot stat `_DIVA templates': No such file or directory [root@host]# ls _DIVA templates [root@host]# ls -al total 24 drwxrwxrwx 3 root root 0 Feb 11 21:07 . drwxrwxrwx 28 root root 0 Jan 28 12:23 .. ?--------- ? ? ? ? ? _DIVA templates [root@host]# Note that the folder is called "_DIVA templates" I've tried copying and pasting it a few different ways to see if maybe it had funky/non-printable characters in the name but it doesn't appear so. Any ideas? Randy Rue Seattle WA

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6080 heads with 6040 NVRAM cards.
by Jeff Cleverley 12 Feb '13

12 Feb '13

Greetings, I'm thinking about doing something that is not supported and was wondering if anyone had done the same or has more detailed insight. We have a very busy cluster (6040s 7.3.5.1P4). It looks like we are largely maxing out the heads for CPU. We are getting a pair of 6080s and really need to try and do the head swap live (takeover / giveback) if at all possible. The unsupported part I want to do is keep the 6040 NVRAM cards and put them in the 6080s as I swap them. The reason for this is I would not have to change the system ID ownership on all the drives. I know changing the system ID is generally not a big deal by booting each head to maintenance mode and reassigning the old SID to the new SID. In our case it worries me. Last week we were going to move a project to the other head by reassigning the appropriate drives for a couple of aggregates. While trying to reassign these the SAS buses started panic'ing and crashed the controlling filer. The entire cluster was down. The ensuing mess took several hours to clean up. If it crashed while trying to change ownership of a few drives, I'm afraid of what will happen when it tries to reassign all the old SID drives for the new NVRAM card. I was hoping if we could keep the cards, we could swap heads, not change SIDs, and minimize our chance of repeating the crash. I could do the disks one at a time, but I have 796 drives on this cluster and would rather not. Is there a requirement for the hardware to have the bigger memory cards? Since there are more CPUs, I can see where maybe something needs it, I just don't know what. We will probably have a downtime in a couple of months where I can put the correct ones back in. Thanks, Jeff -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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OnTap 8 Cluster install
by René Bormann 11 Feb '13

11 Feb '13

Hello Toasters, in our lab I got a FAS3070 Cluster to play around with. So this friday afternoon I wanted to install OnTap 8.1.2 Cluster over my 7-Mode test-installtion. Data loss is no problem. I tried to install the cluster software over the 7-mode Version with software update several times, but on every reboot. Ontap greets me with "7-Mode". Which point am I missing? Thanks, René

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Merging Snapvault Volumes
by Steven Kreuzer 08 Feb '13

08 Feb '13

I opened up a case with NetApp about this, but I figured I should also post here and see what the community has to say. In a nutshell, I have two separate clusters and a volume with home directories on Filer_A that I was snapvaulting to Filer_B. During the hurricane, I had to shut down Filer_A, break the snapvault relationship on Filer_B to promote the volume to RW and then started to have everyone use Filer_B as their home. Folks have been working on Filer_B for 3 or so months now but I am ready to flip back and make Filer_A the primary once again. What are my options for basically taking all the new data as well as the snapshots that are on Filer_B and syncing them back to Filer_A, without losing any of the snapshots that currently exist on Filer_A? Right now the only option that comes to mind is the use rsync and copy a snapshot from Filer_B to Filer_A, take a snapshot on Filer_A, and repeat that process over and over until they have all been recreated on Filer_A. With that, does anyone have any better suggestions? Thanks in advance

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Nifty ONTAP option nfs.max_num_aux_groups
by Steve Losen 08 Feb '13

08 Feb '13

Hi folks, We tend to use unix style security on shares that are accessed via both NFS and CIFS. Being a university we have a large number of users and groups, and some folks belong to numerous groups. (We use group permissions for shared projects and some folks are members of many unix groups.) We use NFS v3 exclusively and the auxiliary group list is passed by the NFS client in each NFS packet, and it is limited to 16 groups. This is rather inconvenient for some NFS users. Does anyone know if this is a hard NFS v3 limit? For CIFS we authenticate via a Windows domain and the CIFS credentials are mapped to Unix credentials for unix style security. We noticed with "cifs shares -s username" that folks were being limited to 32 unix groups. I have discovered that you can do this: options nfs.max_num_aux_groups 256 (the only legal values are 32 and 256, we have DOT 8.0.1 7-Mode.) and now our CIFS users who belong to over 32 unix groups are getting all their groups. No help for NFS v3 but this will make several of our CIFS users happy. Steve Losen scl(a)virginia.edu phone: 434-924-0640 University of Virginia ITC Unix Support

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NetApp 8.0.2, raiddp, 2 failed disks - performance problem.
by Rafał Radecki 08 Feb '13

08 Feb '13

Hi All. I am new to this forum and quite new to NetApp. I work on FAS3210 with 8.0.2 7-Mode. We have 22 SAS disks in our appliance. The aggregate is: >aggr status Aggr State Status Options aggrX online raid_dp, aggr root degraded redirect 32-bit because we have lost 2 disks 2 days ago (one spare and one data disk, NetApp has sent new disks to us). The problem is that the appliance is performing bad in this situation. NFS latency in file operations changed from for example 0,04ms to 0,4ms. I know that the aggregate is now using parity disks in place of one of the failed disks but is this performance drop common? Are there any known ways/howtos to cut down this problem? Best regards, Rafal Radecki.

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RE: Nifty ONTAP option nfs.max_num_aux_groups
by Touretsky, Gregory 08 Feb '13

08 Feb '13

NFSv3 supports both auth_sys (traditional) and rpcsec_gss (Kerberos) authentication. The latter has no 16 gids limit, but might require multiple changes in your environment to support cron jobs, unattended batch, etc. -----Original Message----- From: Steve Losen [scl(a)virginia.edu<mailto:scl@virginia.edu>] Sent: Friday, February 08, 2013 01:47 PM GMT Standard Time To: toasters(a)teaparty.net Subject: Nifty ONTAP option nfs.max_num_aux_groups Hi folks, We tend to use unix style security on shares that are accessed via both NFS and CIFS. Being a university we have a large number of users and groups, and some folks belong to numerous groups. (We use group permissions for shared projects and some folks are members of many unix groups.) We use NFS v3 exclusively and the auxiliary group list is passed by the NFS client in each NFS packet, and it is limited to 16 groups. This is rather inconvenient for some NFS users. Does anyone know if this is a hard NFS v3 limit? For CIFS we authenticate via a Windows domain and the CIFS credentials are mapped to Unix credentials for unix style security. We noticed with "cifs shares -s username" that folks were being limited to 32 unix groups. I have discovered that you can do this: options nfs.max_num_aux_groups 256 (the only legal values are 32 and 256, we have DOT 8.0.1 7-Mode.) and now our CIFS users who belong to over 32 unix groups are getting all their groups. No help for NFS v3 but this will make several of our CIFS users happy. Steve Losen scl(a)virginia.edu phone: 434-924-0640 University of Virginia ITC Unix Support _______________________________________________ Toasters mailing list Toasters(a)teaparty.net http://www.teaparty.net/mailman/listinfo/toasters --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.

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Max fiber run length from 3250 to MK14
by Mr Fletcher Cocquyt 08 Feb '13

08 Feb '13

We have rack space constraints. Can our 3250 heads be 6 racks away from our MK14 trays? Thanks, Fletcher

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Minimum PSUs required for DS4243 with 24x SAS
by Alexander Griesser 07 Feb '13

07 Feb '13

Hey there, we were just re-cabling some of the power cords on our DS4243 shelfs with 4 PSUs and 24x 15k 600GB SAS. When I power down one of the 4 available PSUs in the DS4243, I get the following messages in system log and autosupports are generated: Wed Feb 6 19:28:15 CET [barricade:ses.status.psError:CRITICAL]: DS4243 (S/N SHJHU000000055F) shelf 2 on channel 0a power error for Power supply 4: critical status; power supply failed. This module is on the rear side of the shelf, at the bottom right. Wed Feb 6 19:28:15 CET [barricade:ses.status.volError:CRITICAL]: DS4243 (S/N SHJHU000000055F) shelf 2 on channel 0a voltage error for Voltage sensor 8: unrecoverable error. This module is on the rear side of the shelf, at the lower right, on the power supply. Wed Feb 6 19:28:15 CET [barricade:ses.psu.powerReqError:CRITICAL]: Not enough power supplies are present in channel 0a disk shelf 2 to satisfy disk drive and shelf power requirements. Wed Feb 6 19:28:15 CET [barricade:monitor.shelf.fault:CRITICAL]: Fault reported on disk storage shelf attached to channel 0a. Please check fans, power supplies, disks, and temperature sensors. Wed Feb 6 19:28:15 CET [barricade:callhome.shlf.fault:error]: Call home for SHELF_FAULT Wed Feb 6 19:28:15 CET [barricade:monitor.shelf.configError:CRITICAL]: Enclosure services has detected an error in access to shelves or shelf configuration 0a. Wed Feb 6 19:28:15 CET [barricade:callhome.config:warning]: Call home for CONFIGURATION_ERROR Wed Feb 6 19:29:00 CET [barricade:monitor.globalStatus.critical:CRITICAL]: Disk shelf fault. Disk shelf configuration error. Wed Feb 6 19:29:11 CET [barricade:ses.status.psInfo:info]: DS4243 (S/N SHJHU000000055F) shelf 2 on channel 0a power supply information for Power supply 4: normal status. Wed Feb 6 19:29:11 CET [barricade:ses.status.volInfo:info]: DS4243 (S/N SHJHU000000055F) shelf 2 on channel 0a voltage information for Voltage sensor 8: normal status. Wed Feb 6 19:29:11 CET [barricade:monitor.shelf.fault.ok:info]: Fault previously reported on disk storage shelf attached to channel 0a has been corrected. Wed Feb 6 19:29:11 CET [barricade:monitor.shelf.configError.ok:info]: Enclosure services-detected configuration error has been corrected on channel 0a. Wed Feb 6 19:30:00 CET [barricade:monitor.globalStatus.ok:info]: The system's global status is normal. Why exactly does it think that there are not enough power supplies present if I just shut down one of them? I was under the assumption that a full SAS shelf can work with 2 PSUs and a full SATA shelf can work with 1 PSU without problems. Am I wrong? Nothing happend to the filers, no takeover, no errors, etc., but the message in the logs puzzles me. Thanks && bye, Alexander Griesser System-Administrator ANEXIA Internetdienstleistungs GmbH Telefon: +43-463-208501-320 Telefax: +43-463-208501-500 E-Mail: ag(a)anexia.at <mailto:ag@anexia.at> Web: http://www.anexia.at <http://www.anexia.at> Anschrift Hauptsitz Klagenfurt: Feldkirchnerstraße 140, 9020 Klagenfurt Geschäftsführer: Alexander Windbichler Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT U63216601

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NetApp 8.0.2 7-mode - update to 8.1.2.
by Rafał Radecki 06 Feb '13

06 Feb '13

Hi All. I have a FAS3210 appliance with NetApp 8.0.2. I would like to update it to 8.1.2. In http://support.netapp.com/ (My AutoSupport) I see there is a "Upgrade Advisor" section. There is a step-by-step howto. But are there any good documents about updating this software? I would like to make as few mistakes as possible, I will do it for the first time ;) Best regards, Rafal Radecki.

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Authentication Issues w/ SCCM talking to filer via CIFS w/ Computer Account
by Ray Van Dolson 05 Feb '13

05 Feb '13

We're having authentication issues with SCCM pointed at a CIFS share on a filer running ONTAP 8.0.x. SCCM uses a domain computer account to authenticate (our filer is also joined to our domain). We've added the computer account at the share level (as well as "Domain Computers") with full permissions, but continue to get authentication denied errors back from the filer. Speficially: Fri Feb 1 16:28:27 PST [red-str-napc2-p2: auth.trace.authenticateUser.loginTraceIP:info]: AUTH: Login attempt by user red-inf-cm-p01$ of domain DOMAIN from client machine 1.1.1.1 (RED-INF-CM-P01). Fri Feb 1 16:28:27 PST [red-str-napc2-p2: auth.dc.trace.DCConnection.statusMsg:info]: AUTH: TraceDC- attempting authentication with domain controller \\REDDC1. Fri Feb 1 16:28:27 PST [red-str-napc2-p2: auth.trace.authenticateUser.loginRejected:info]: AUTH: Login attempt by user rejected by the domain controller with error 0xc0000199: STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT. Fri Feb 1 16:28:28 PST [red-str-napc2-p2: auth.trace.authenticateUser.loginTraceIP:info]: AUTH: Login attempt by user red-inf-cm-p01$ of domain DOMAIN from client machine 1.1.1.1 (RED-INF-CM-P01). This reads like the problem is with AD rejecting the login, but when we point to another CIFS share on a real Windows box we don't get the same problem, so we don't think that's the case. We came across this KB article[1] which seems to disable the use of the computer account for authentication. However, this seems to send *no* authentication information at all (anonymous?) which of course is rejected as well. Help? We'll be reaching out to support as well. Thanks, Ray [1] https://kb.netapp.com/support/index?page=content&id=2013374

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NT_STATUS_NO_MEMORY
by Ray Van Dolson 05 Feb '13

05 Feb '13

Anyone ever encountered this error when attempting to access a CIFS share on an ONTAP 8.0.x system? ("NT_STATUS_NO_MEMORY"). We encountered reports from users of intermittent failures to connect to CIFS shares. From Windows hosts, things would just time out. From Samba clients, the above NT_STATUS_NO_MEMORY error was the result. The "fix" ended up being to restart the CIFS service on the system, but wondering what the true root cause here might be. I'm unsure how accurate the error returned by the Samba client is -- in any case there doesn't appear to be a way to query memory utilization on the NetApp. Thanks, Ray

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VSC 4.1 & Online alignments
by Scott Eno 05 Feb '13

05 Feb '13

Hi, We're trying to get some VM's aligned in our NFS-based VMware environment using the "online" alignment tool packaged in VSC. Since we are NFS, the tool needs a VMFS datastore to use to align the VM. When we run the tool and it moves the VM to the VMFS datastore, the VM no longer shows up as misaligned. However, if we move the VM back to an NFS datastore, it shows up as misaligned again. So, is this a one-way trip? NFS --> VMFS, but that VM can never go back?

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RE: nasty virus
by Klise, Steve 04 Feb '13

04 Feb '13

To fast on the trigger.. I don't want to start up the thread about AV on or not on the filers (I run it on my filer), but we got hit with a nasty variant of this. Not sure why Trend didn't block it, but basically a bunch of my CIF folders were set to read only/hidden.. Not fun. There are some other reasons that need to be mitigated that I wont go into, but this is the virus. http://about-threats.trendmicro.com/Malware.aspx?id=47409&name=WORM_VOBFUS.… To unhide the share, we were mapped to the share location, and ran this.. It unhides the shares lick-ity split. >From an XP box.. Cmd "usebackq delims=#" %i in (`dir *. /ah /s /b`) do attrib -s -h "%i" Just share because I care..

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instantaneous snap restore ?
by Avi Ben Emanuel (Wollman) 04 Feb '13

04 Feb '13

marketing continuously claim that snap restore is instantaneous. yet I have yet to succeeded doing so. "snap restore" of files to a location quite a while and is "copying the files" nothing close to instantaneous. i would be happy to understand what i am missing. the following is a example of a virtual disk that was restored, it took quite a while to "restore"=copy this 80gb file. snap restore -t file -s nightly.0 /vol/vmsata/vmfs1/lms-client/lms-clinet-flat.vmdk Avi -- ------------ Avi Ben Emanuel (Wollman) (אבי בן עמנואל (וולמן Systems Engineer | Unix Microsoft Vmware Jerusalem College of Technology מחלקת תקשוב בית הספר הגבוה לטכנולוגיה - מכון לב POB 16031 Jerusalem 91160 Israel הועד הלאומי 21 ירושלים Email: avi(a)jct.ac.il | Office: +972-2-6751036 | Mobile: +972-52-3809107 ------------

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Re: Aggregate Disk Busy 100% with volume IOPS low
by Fletcher Cocquyt 27 Jan '13

27 Jan '13

Indeed, We are considering replacing our premium support with next day and using the savings to buy some professional services - we've heard other groups see better support ROI with this combination. On the wafl block reclamation - are you talking about options wafl.trunc.throttle.vol.max etc? we had to tune that back in 2010 7.3x days: http://www.vmadmin.info/2010/11/vfiler-migrate-netapp-lockup.html But not sure this is still a hidden option in 8.1.x? I read references to a tool called perfviewer - anyone still using that? thanks On Jan 26, 2013, at 1:45 PM, Isaiah <zoratu(a)gmail.com> wrote: > If I were you, I would purchase some incident-based support from Berkeley Communications ("Berkcom"). They're the only reseller of both used and new NetApp gear in the world. They know more about NetApp than NetApp. I've been a customer for nine years and they're the first number I call--because they're all experts. No escalation yadda yadda. Completely worth the modest fees to support gear not purchased through them. > > The last time your situation happened to me I ended up having to tune the wafl block reclamation aggressiveness. There were so many snapshots happening on the system with lots of gradual changes that the disk utilization was high just reclaiming blocks that used to be dirty. > -- > - Isaiah > > On Jan 26, 2013, at 10:15, Fletcher Cocquyt <fcocquyt(a)stanford.edu> wrote: > >> On Nick's advice I setup a job to log both wafltop and ps -c 1 once per minute - and we had a sustained sata0 disk busy from 5am-7am as reported by NMC. >> First question I have from wafltop show is - what is the first row (sata0::file i/o) reporting ? What could be the source of these 28907 non-volume specific Read IOs? >> >> Application MB Total MB Read(STD) MB Write(STD) Read IOs(STD) Write IOs(STD) >> ----------- -------- ------------ ------------- ------------- -------------- >> sata0::file i/o: 5860 5830 30 28907 0 >> sata0:backup:nfsv3: 608 0 608 31 0 >> >> I'm just starting to go through the data >> >> aggr status >> Aggr State Status Options >> sata0 online raid_dp, aggr nosnap=on, raidsize=12 >> 64-bit >> aggr2 online raid_dp, aggr nosnap=on, raidsize=19 >> 64-bit >> aggr1 online raid_dp, aggr root, nosnap=on, raidsize=14 >> 32-bit >> na04*> df -Ah >> Aggregate total used avail capacity >> aggr1 13TB 11TB 1431GB 89% >> aggr2 19TB 14TB 5305GB 74% >> sata0 27TB 19TB 8027GB 72% >> >> >> <sataIOPSJan26.jpeg> >> >> thanks >> >> >> On Jan 25, 2013, at 5:33 PM, Nicholas Bernstein <nick(a)nicholasbernstein.com> wrote: >> >>> Try doing a 'ps -c 1' or a wafltop show (double check the syntax) while you're getting the spike; those will probably help you narrow down the processes that are using your disks. Both are priv set advanced/diag commands. >>> >>> Nick >>> >> >> _______________________________________________ >> Toasters mailing list >> Toasters(a)teaparty.net >> http://www.teaparty.net/mailman/listinfo/toasters

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Re: Aggregate Disk Busy 100% with volume IOPS low
by Fletcher Cocquyt 24 Jan '13

24 Jan '13

Hi Mike, this is a snap mirror SOURCE. The perfstats captured during the issue include wafl scan status - I'll mention it to the engineer when I show the disparity btw AGGR OPS and total volume OPS. Unfortunately its not easy to differentiate the source of IOPS with any existing tools in my experience - including perfstats and escalated Netapp support analysis. But the NMC AGGR vs volume stats need to be explained somehow. thanks On Jan 23, 2013, at 9:35 PM, Mike Nye <Mike.Nye(a)xpanse.com.au> wrote: > Hi Fletcher, > > Is this FAS a SnapMirror destination? This sounds very much like a volume deswizzle / CBR scan issue… > > You could try scheduling a “priv set advanced; wafl scan status” to run via RSH/SSH during the time of poor performance, to see what internal WAFL scans are taking place on the system. > > Thinks to look for are “Container Block Reclamation” and/or “Volume Deswizzle”. > > Kind regards, > Mike Nye > > > <image001.jpg> > <image002.jpg> > Mike Nye > Team Lead Systems Engineer > mike.nye(a)xpanse.com.au > www.xpanse.com.au > Mob: > Office: > Fax: > +61 407 772 465 > +61 8 9322 6767 > +61 8 9322 6077 > 18 Emerald Tce > West Perth > WA 6005 > <image003.jpg> > > > From: toasters-bounces(a)teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Fletcher Cocquyt > Sent: Thursday, 24 January 2013 1:28 PM > To: toasters(a)teaparty.net Lists > Subject: Aggregate Disk Busy 100% with volume IOPS low > > 3270 cluster, OnTAP 8.1-7mode > > We are investigating a SATA aggregate showing repeated 5am disk 100% busy spikes without its volumes showing any corresponding IOPS spike as reported by Netapp Management Console (NMC). > The 5am disk busy spikes correlate with very high latency on volumes on a different SAS aggregate. These volumes host VMs which then timeout, some needing reboots. > Today when I heard from Netapp support after reviewing my perfstat the engineer reported this is expected since NVRAM buffers are shared btw aggregates. > > But when I dig further into the NMC stats I see the SATA aggregate disk busy actually corresponds to a DROP in IOPS on the 3 volumes hosted on the SATA aggregate - almost like some internal aggregate operations are starving out the external volume ops. > I checked the snapshots (vol and aggr), snap mirror, dedup and none of the usual suspects were running. > > When I look at the NMC throughput graphs and switch on the legend - it shows a 5am READ blocks/sec spike corresponding perfectly to the disk busy. > > Where are these AGGR level READ operations coming from that are missing from the constituent volume IOPS, and in fact seem to be starving out volume level IO? > > I don't see much in the messages log, but will check the rest of the logs for internal type OPS > > thanks for any insight > > > > > >

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Re: Aggregate Disk Busy 100% with volume IOPS low
by Fletcher Cocquyt 24 Jan '13

24 Jan '13

No NDMP in use for us - at a loss to explain this level of AGGR disk busy with no vol level IO Feels like an internal type operation hitting a bug thanks On Jan 23, 2013, at 10:21 PM, "Klise, Steve" <klises(a)sutterhealth.org> wrote: > A stab but what about ndmp jobs? > > From: Fletcher Cocquyt [mailto:fcocquyt@stanford.edu] > Sent: Wednesday, January 23, 2013 09:27 PM > To: toasters(a)teaparty.net Lists <toasters(a)teaparty.net> > Subject: Aggregate Disk Busy 100% with volume IOPS low > > 3270 cluster, OnTAP 8.1-7mode > > We are investigating a SATA aggregate showing repeated 5am disk 100% busy spikes without its volumes showing any corresponding IOPS spike as reported by Netapp Management Console (NMC). > The 5am disk busy spikes correlate with very high latency on volumes on a different SAS aggregate. These volumes host VMs which then timeout, some needing reboots. > Today when I heard from Netapp support after reviewing my perfstat the engineer reported this is expected since NVRAM buffers are shared btw aggregates. > > But when I dig further into the NMC stats I see the SATA aggregate disk busy actually corresponds to a DROP in IOPS on the 3 volumes hosted on the SATA aggregate - almost like some internal aggregate operations are starving out the external volume ops. > I checked the snapshots (vol and aggr), snap mirror, dedup and none of the usual suspects were running. > > When I look at the NMC throughput graphs and switch on the legend - it shows a 5am READ blocks/sec spike corresponding perfectly to the disk busy. > > Where are these AGGR level READ operations coming from that are missing from the constituent volume IOPS, and in fact seem to be starving out volume level IO? > > I don't see much in the messages log, but will check the rest of the logs for internal type OPS > > thanks for any insight > > > > > >

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Vfiler DR activate
by Iluhes 22 Jan '13

22 Jan '13

Hello Toasters, After running VFILER DR Activate and failing over vFiler to DR site, none of the shares were available. The DC controller was not available in DR bubble, but we thought that local admin users on vfiler should have access to shares. We could not access shares. For certain vFiler DRs when the production side is a domain member, we have a need to have the filer available in a DR test situation in which the domain controller is not available. We have found in testing that in the absence of the domain controller, all share access is denied. Even when we try accessing with local accounts, which on a Windows file server, would have let us access the share in the absence of a domain controller we are denied access. Is that correct behavior? We would get: "There are currently no logon server available to service the logon request" Is there anyway to do vFiler DR where the vFiler is a domain member where one can access the shares in DR without the domain being present--using local accounts only. Thanks!!!

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RE: Vfiler DR activate
by steve klise 22 Jan '13

22 Jan '13

Was there a delta in time between the filer and the clinet? Usually AD has to be within 5 minutes of source and destination for Kerberos. You would want an AD controller to be available, and usually the 1st box up for CIFS authentication... Sent from Windows Mail From: Iluhes Sent: ‎January‎ ‎21‎, ‎2013 ‎6‎:‎06‎ ‎PM To: toasters(a)teaparty.net Subject: Vfiler DR activate Hello Toasters, After running VFILER DR Activate and failing over vFiler to DR site, none of the shares were available. The DC controller was not available in DR bubble, but we thought that local admin users on vfiler should have access to shares. We could not access shares. For certain vFiler DRs when the production side is a domain member, we have a need to have the filer available in a DR test situation in which the domain controller is not available. We have found in testing that in the absence of the domain controller, all share access is denied. Even when we try accessing with local accounts, which on a Windows file server, would have let us access the share in the absence of a domain controller we are denied access. Is that correct behavior? We would get: "There are currently no logon server available to service the logon request" Is there anyway to do vFiler DR where the vFiler is a domain member where one can access the shares in DR without the domain being present--using local accounts only. Thanks!!!

1 0

Re: wafl_cp_slovol_warning_1 with big latency spikes
by Brian Beaulieu 19 Jan '13

19 Jan '13

What about other IO on the aggregate? Any other volume activity (snaps, resize) I feel your pain. I've had one single VM cause IO spikes and thus latency. I had this happen when I moved the VM from an NFS datastore to a VMFS datastore to get more IO potential. Well, that extra IO was too much of a piece of the pie. The other night I had all NFS/CIFS IO completely stop for a couple of minutes during a volume resize. I love NFS+VMWare+NetApp but sometimes I hate it as well. Brian

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