toasters

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13520 discussions

Interested in learning more about ONTAP 9?
by Parisi, Justin 28 Jun '16

28 Jun '16

In case you aren't aware, NetApp has an official podcast. This month, we've covered all things ONTAP 9 related. If you're interested, check it out! http://techontappodcast.com/

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nfs access to volumes with ntfs security mode
by Peter D. Gray 27 Jun '16

27 Jun '16

Hi toasters We are migrating to cluster mode from 7 mode and having troubles with NFS access to volumes also doing CIFS. If I create a volume with NTFS security mode, and export aforesaid volume via NFS to a client, the client cannot read the volume. The mount suceeds, that is a filesystem handle is returned, but calls to access the directort fail, with message "file temporarily unavailable on the server, retrying..." The actual NFS error over the wire is is NFS3ERR_JUKEBOX. This is as root on the client. Non-root just gets permission denied. We have already set -ignore-nt-acl-for-root enabled on the vserver. The actuall settings on the vserver are: -access true \ -v3 enabled \ -udp enabled \ -tcp enabled \ -v4-id-domain its.uow.edu.au \ -v4.0 enabled \ -v4.1 enabled \ -v4.0-acl enabled \ -v4.1-acl enabled \ -v4.0-read-delegation enabled \ -v4.1-read-delegation enabled \ -v4.0-write-delegation enabled \ -v4.1-write-delegation enabled \ -v4.1-pnfs enabled \ -v4-numeric-ids enabled \ -mount-rootonly enabled \ -nfs-rootonly enabled \ -showmount enabled \ -vstorage disabled \ -ignore-nt-acl-for-root enabled So, what are we doing wrong or is this a bug? Regards, pdg Peter Gray Ph (direct): +61 2 4221 3770 Information Management & Technology Services Ph (switch): +61 2 4221 3555 University of Wollongong Fax: +61 2 4229 1958 Wollongong NSW 2522 Email: pdg(a)uow.edu.au Australia URL: http://pdg.uow.edu.au

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Unable to terminate re-startable dumps
by John Adams 22 Jun '16

22 Jun '16

Hi All, We backup from a 3rd party product via NDMP. The past couple of days, SOME the backups have been failing on this filer with: There are no backup contexts available in the system. Delete some of the unwanted restartable backup contexts and retry the operation. DUMP: Maximum number of allowed dumps/restores (16) in progress. NDMP_OP_ERRORCODE is 'EMAXBACKUPS' DUMP: Dump failed to initialize. And looking at the filer: hostname*> backup status ID State Type Device Start Date Level Path -- ----------- ---- ------ ------------ ----- --------------- 2 RESTARTABLE dump 0 3 RESTARTABLE dump 0 4 RESTARTABLE dump 0 5 RESTARTABLE dump 0 6 RESTARTABLE dump 0 7 RESTARTABLE dump 0 8 RESTARTABLE dump 0 9 RESTARTABLE dump 0 10 RESTARTABLE dump 0 11 RESTARTABLE dump 0 12 RESTARTABLE dump 0 13 RESTARTABLE dump 0 14 RESTARTABLE dump 0 15 RESTARTABLE dump 0 16 RESTARTABLE dump 0 So I thought I had an accumulation of old backup sessions over time. hostname*> backup terminate 2 Unable to read from registry. There are no snapshots on the system that were created by backups right now. hostname*> version NetApp Release 8.2.3P3 7-Mode: Tue Apr 28 14:48:22 PDT 2015 Any ideas of what I could try here? Its strange that it shows dump as the device instead of NDMP. And its strange that the Start Date and Path's are blank. Thanks.

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Raid disk layout - the ability to lose a shelf.
by jordan slingerland 22 Jun '16

22 Jun '16

Hello, I am deploying a new 8040 and it was requested that the aggregates / raid groups are laid out in such a way that no more than 2 disks in any raid group are within the same shelf. At first this sounds like it reduces single points of failure and could protect availability from the failure of a full disk shelf. I argue against this strategy and was wondering if anyone in this list had any feedback. My thought is that this configuration is marginally increasing availability at the sacrifice of additional risk to data integrity. With this strategy, each time a disk failed we would endure not only the initial rebuilt to spare, but a second rebuild when a disk replace is executed to put the original shelf/slot/disk back into the the active raid group. Additional, if a shelf failure were encountered, I question whether it would even be possible to limp along. In an example configuration, we would be down 24 disks, 4 or 5 would rebuild to the remaining spares available. Those rebuilds along should require significant cpu to occur concurrently and I expect would impact data services significantly. Additionally, at least 10 other raid groups would be either single or double degraded. I expect the performance degradation at this point would be so great that the most practical course of action would be to shutdown the system until the failed shelf could be replaced. Thanks for any input. I would like to know if anyone has any experience thinking through this type of scenario. Is considering this configuration interesting or perhaps silly? Are any best practice recommendations being violated? Thanks in advance. --Jordan

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Netappdjenga
by Bert Kiers 21 Jun '16

21 Jun '16

Hi, A collegue fell off his chair when I proposed this game so I share the idea. Take a working Netapp metro cluster (preferably non-production). Players take turns to disconnect one connector until the cluster stops functioning. The player that disconnected the last one, loses. Grtnx, -- Bert

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adding new SAS loop
by Peter D. Gray 17 Jun '16

17 Jun '16

Hi people, anybody know if adding hot adding new SAS loop onto an 8000 series with ontap 8.3 cluster mode is supported? If yes, where is this fact documented? (as opposed to added a new shelf into an existing loop which I know is supported) Regards, pdg

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7-mode snap list with year
by Basil 16 Jun '16

16 Jun '16

Hi, I'm trying to write a module into a home-grown management tool that will alert us when snapshots are kept longer than their retention target. It works fine for CDOT, but I'm having trouble with the time stamps in 7-mode. They omit the year. I need to use cli to get this, I can't use powershell or the api. Does anyone have an idea?

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High CPU
by Sayla, Mustafa 10 Jun '16

10 Jun '16

Is there a way to find out why in a CDOT cluster controller A is always between 50 and 55% CPU usage and controller B is less than 25%. Storage wise data is evenly balance but seem like some volumes are used more heavily than others and if I can identify them I would balance them to that CPU usage is even between the controllers. Thank you Mustafa Sayla Visit us on the Web at mesirowfinancial.com This communication may contain privileged and/or confidential information. It is intended solely for the use of the addressee. If you are not the intended recipient, you are strictly prohibited from disclosing, copying, distributing or using any of this information. If you received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Confidential, proprietary or time-sensitive communications should not be transmitted via the Internet, as there can be no assurance of actual or timely delivery, receipt and/or confidentiality. This is not an offer, or solicitation of any offer to buy or sell any security, investment or other product.

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Risk of assigning disks in a loop to two controllers
by BERNTSEN Basil 10 Jun '16

10 Jun '16

Hi folks, I have a CDOT 8.2 system (in prod) where new shelves were installed on a SAS stack on the wrong node. I want to create an aggregate on node1, but the disks are on node2. Based on the guidelines<https://library.netapp.com/ecmdocs/ECMP1196912/html/GUID-99C1AA7C-79D9-4E4F…>, I'm thinking of delaying the aggregate creation and changing the shelves. My question is whether it's worth the delay. What are the risks of just assigning the disks to the partner of the node they're currently assigned to? The documentation says to "Always assign all disks on the same loop or stack to the same system." Why? Thanks! Basil ************************************************************************* This message and any attachments (the "message") are confidential, intended solely for the addressee(s), and may contain legally privileged information. Any unauthorized use or dissemination is prohibited. E-mails are susceptible to alteration. Neither SOCIETE GENERALE nor any of its subsidiaries or affiliates shall be liable for the message if altered, changed or falsified. Please visit http://sgasdisclosure.com for important information regarding SG Americas Securities, LLC (“SGAS”). Please visit http://swapdisclosure.sgcib.com for important information regarding swap transactions with SOCIETE GENERALE. *************************************************************************

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Closing cifs sessions by id in 8.2
by Basil 31 May '16

31 May '16

Hi, I'm running 8.2.3 and need to close a specific cifs session by ID for troubleshooting and taking a trace. The command cifs session close appears to have been introduced in 8.3... Is there another way, maybe from node or system shell, to kill a specific session?

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