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13531 discussions

latency figures visible via SNMP?
by A Darren Dunham 26 Nov '08

26 Nov '08

Looking through the mibs, I didn't see anything that seemed to be a match, but I thought I'd ask. Is there a way to grab the nfs latency figures via SNMP? netapp> stats show nfsv3 nfsv3:nfs:nfsv3_ops:3917/s nfsv3:nfs:nfsv3_read_latency:2254.40us nfsv3:nfs:nfsv3_read_ops:2022/s nfsv3:nfs:nfsv3_write_latency:420.56us nfsv3:nfs:nfsv3_write_ops:605/s I'm hoping it's in there and I've just missed it. Thanks! -- Darren

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Difference in # of files
by Glenn Dekhayser 26 Nov '08

26 Nov '08

Someone out there has to know this. When I go into a folder in CIFS that only has files in it, it shows in the status bar 22 objects (files). I count, and verify. 22 files. I go up a folder, and right click the folder and do a 'properties', and it shows 23 files! I am NOT showing ~snapshot, and it shouldn't matter if I did. My customer has the same problem, only the difference in his folder is 2 files (122 versus 120). Ideas anyone? _____________________________________________________________ Glenn Dekhayser | VP, Technology | VoyantStrategies O: (732) 335-1500 x514 | F: (732) 810-0378 AIM: gdekhayser | Yahoo: gdekhayser | http://www.voyantinc.com _____________________________________________________________

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Downgrading Data ONTAP?
by Simon Vallet 25 Nov '08

25 Nov '08

Hi, we recently updated ONTAP from 7.2.5.1 to 7.3 on our 3140c, which led to many problems : one head doesn't boot anymore, so the cluster failover is impossible; the other head (currently in takeover) seems to reboot randomly every week; and when this happens, it freezes some of our RHEL4 servers (kernel panics, somewhere in lockd). Putted shortly: this is a mess. The issues are currently investigated by NetApp, but it may take some time until we see a corrective action on their side. So we're investigating another solution, which would be to downgrade back into 7.2.5.1 (since it appears 7.2.6 doesn't seem very stable either). Would any of you know how to do that, or could point me at a proper procedure somewhere? NetApp support was unresponsive on this one, and I'm a bit concerned about possible changes to the WAFL layout or something similar between 7.2 and 7.3. Simon

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MS DPM
by Darish Rajanayagam 25 Nov '08

25 Nov '08

Toasters, Does anyone use Microsoft DPM for Exchange backups in a MSCS cluster using NetApp storage(iscsi)? Whenever the Exchange virtual server is moved over to a new node, DPM wants to perform consistency checks on the protected storage groups - according to Microsoft this should not be the case - if I were to expand the volume, we would need to run DPM consistency checks but not during normal cluster failover (DPM performs block level backup). I am having an issue where after every failover, I have to re-run consistency checks on all my storage groups (100 Storage groups!). I had a case open with Microsoft who asked me to contact NetApp - NetApp support wasn't very helpful in this matter. Before I proceed further, I am wondering if anyone else is experiencing this issue. Thanks, Darish

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FAS2050 with 20 disks
by Premkumar Subramanian 25 Nov '08

25 Nov '08

Hi, I plan to implement a FAS2050 with 20 internal SAS disks. I intend to have 12 disks on one of the controller and 8 on the other. the idea being to make use of processing power of both controllers. Now the trade-off is the number of spindles in each aggregate possibly affecting performance. I have seen a few people use just 2 disks on the second controller with no spares and have the other 16 disks+2 spares on a single controller. which of these two would be a better option? -- Best regards, Premkumar Subramanian

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Re: FAS2050 with 20 disks
by Premkumar Subramanian 24 Nov '08

24 Nov '08

I need to serve iscsi + CIFS. I would be servering around 1TB of cifs and 1.8 TB of iscsi data to vmware servers running SQL. We dont have any IOPS numbers. Question is what would be the performance impact...if any of a seperate aggregate of 8 disks on a seperate controller. Will the availability of the active second controller with 2GB RAM compensate for a smaller raid group. 2008/11/24 Webster, Stetson <Stetson.Webster(a)netapp.com> > It depends on the amount of risk exposure you want (in absence of the > spare), and performance impact you can withstand with the fewer disks. > > > > *Stetson M. Webster** > *Professional Services Engineer > NCIE-SAN, NCIE-B&R, SNIA-SCSE > NetApp Global Services - Southeast District > > 919.250.0052 Mobile > Stetson.Webster(a)netapp.com > > Learn how: netapp.com/guarantee > > > > [image: guarantee-email-sig2]<http://www.netapp.com/us/solutions/infrastructure/virtualization/guarantee.…> > > > > > *From:* Premkumar Subramanian [mailto:prem@x-or.co.uk] > *Sent:* Monday, November 24, 2008 2:42 PM > *To:* toasters(a)mathworks.com > *Subject:* FAS2050 with 20 disks > > > > Hi, > > I plan to implement a FAS2050 with 20 internal SAS disks. I intend to have > 12 disks on one of the controller and 8 on the other. > the idea being to make use of processing power of both controllers. Now the > trade-off is the number of spindles in each aggregate possibly affecting > performance. I have seen a few people use just 2 disks on the second > controller with no spares and have the other 16 disks+2 spares on a single > controller. > > which of these two would be a better option? > > -- > > Best regards, > Premkumar Subramanian > > > -- Best regards, Premkumar Subramanian XOR Technologies DDI: 0208 736 5884 Mobile: 07884477910 www.x-or.co.uk

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Very slow large file operations
by Page, Jeremy 22 Nov '08

22 Nov '08

I need help, I cannot figure out how to troubleshoot this problem further. We have a rebranded 3070A with ~200 VMs running on it. Maybe 30 on a batch of FC disks and the rest on 2 aggrs of 33 SATA drives each. None of the VMs are disk IO intensive. When I try and copy a VM to a new volume I get EXTREMELY slow speeds, something on the order of 3 gig an hour. I am also seeing incredibly slow Snapvault transfers and initializations. I think that in part we are hitting the sequential read bug, but this occurs even on volumes that do not have SIS enabled. For instance I have a snapvault job running that's been going for 4 days (!) and only xfered 260 gig. And it's an update so should always be hitting data (and thus not having the bug). Statit shows the drives all under 15% utilization. It's over dual 10gigE connections with the preferred adapter set (there are also 2 1 gig VIFs on this box for user and admin access). I'm at a loss. IBM says we need to upgrade (we are at 7.2.4) but I am concerned that it's not going to fix our problem and downtime windows are difficult to get so I want to make sure it's resolved with as little interruption as possible. Any suggestions on troubleshooting? Please be advised that this email may contain confidential information. If you are not the intended recipient, please do not read, copy or re-transmit this email. If you have received this email in error, please notify us by email by replying to the sender and by telephone (call us collect at +1 202-828-0850) and delete this message and any attachments. Thank you in advance for your cooperation and assistance. In addition, Danaher and its subsidiaries disclaim that the content of this email constitutes an offer to enter into, or the acceptance of, any contract or agreement or any amendment thereto; provided that the foregoing disclaimer does not invalidate the binding effect of any digital or other electronic reproduction of a manual signature that is included in any attachment to this email.

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Re: cf takeover hungs Microsoft Windows Clusters
by Cristian Rojas 22 Nov '08

22 Nov '08

we have 2 x Cisco 3750 configured with portfast 1000 full duplex to avoid spanning tree negotiation. Chris ________________________________ From: Jeff Mohler <speedtoys.racing(a)gmail.com> To: Cristian Rojas <intipu(a)yahoo.com> Cc: Jack Lyons <jack1729(a)gmail.com>; "toasters(a)mathworks.com" <toasters(a)mathworks.com> Sent: Saturday, November 22, 2008 2:21:08 AM Subject: Re: cf takeover hungs Microsoft Windows Clusters Two minutes eh? Sounds a lot like ARP issues. How is portfast/etc set on the switch ports? Sent from my iPhone On Nov 21, 2008, at 5:33 PM, Cristian Rojas <intipu(a)yahoo.com> wrote: Hi Jack, we are using 2 standalone interfaces for iscsi, and a team of 2 interfaces for intra and cluster traffic. thanks Chris ________________________________ From: Jack Lyons <jack1729(a)gmail.com> To: Cristian Rojas <intipu(a)yahoo.com>; toasters(a)mathworks.com Sent: Saturday, November 22, 2008 1:21:00 AM Subject: Re: cf takeover hungs Microsoft Windows Clusters We have had several clusters that have worked fine over take overs (just went through 6 panics after upgrading to 7.2.6!)., but since you mention igroups - I assume you are using iscsi for the luns. We are using fcp. I assume you are using 3 seperate network interfaces for iscsi traffic and the intra cluster and public traffic? Jack On 11/21/08, Cristian Rojas <intipu(a)yahoo.com> wrote: > Hi guys, im seeing this behavior on different MS windows clusters attached > to our FAS960, the most weird part is that i see the active node of the > windows cluster connected to the target portal, but from the filer i dont > see the igroup logged in for almost 2 minutes and thats when the windows > clusters hung because they cant mount the quorum lun. All these while doiing > a cf takeover. > > I talked to probably 10 Netapp support engineers and no one can explain it. > > Has anyone seen anything like this before? I have installed Host Utilities 5 > and checked the windows registry to make sure the values have been tuned. > > Thanks > > Chris > > > > -- Sent from Gmail for mobile | mobile.google.com

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File Copy between NTFS & UNIX Qtrees
by Jimmy Corncrake 22 Nov '08

22 Nov '08

Hi Toasters, I have setup 2 qtrees. QT1 is NTFS and QT2 is UNIX. File Data needs to be passed between the 2 QTREES in both directions which I am doing using ndmpcopy. However an unexpected consequence of this action is that the UNIX user account looses access to the UNIX QTREE after the copy if made from QT1 to QT2. Does anyone know what could cause this and how I can get around it? Both QTREEs are in the same Volume but I would not expect this to be relevant. thanks, Jimmy

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Re: cf takeover hungs Microsoft Windows Clusters
by Cristian Rojas 22 Nov '08

22 Nov '08

Forgot to say, we are using regular ethernet cards for iscsi connections. Chris ________________________________ From: "Webster, Stetson" <Stetson.Webster(a)netapp.com> To: Cristian Rojas <intipu(a)yahoo.com>; toasters(a)mathworks.com Sent: Saturday, November 22, 2008 12:57:22 AM Subject: RE: cf takeover hungs Microsoft Windows Clusters Are all HBA’s (on all MS cluster nodes) zoned in? Stetson M. Webster Professional Services Engineer NCIE-SAN, NCIE-B&R, SNIA-SCSE NetApp Global Services - Southeast District 919.250.0052 Mobile Stetson.Webster(a)netapp.com Learn how: netapp.com/guarantee From:Cristian Rojas [mailto:intipu@yahoo.com] Sent: Friday, November 21, 2008 7:34 PM To: toasters(a)mathworks.com Subject: cf takeover hungs Microsoft Windows Clusters Hi guys, im seeing this behavior on different MS windows clusters attached to our FAS960, the most weird part is that i see the active node of the windows cluster connected to the target portal, but from the filer i dont see the igroup logged in for almost 2 minutes and thats when the windows clusters hung because they cant mount the quorum lun. All these while doiing a cf takeover. I talked to probably 10 Netapp support engineers and no one can explain it. Has anyone seen anything like this before? I have installed Host Utilities 5 and checked the windows registry to make sure the values have been tuned. Thanks Chris

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snapvault retention questions
by Romeo Theriault 20 Nov '08

20 Nov '08

We're looking at using snapvault as a backup solution and after reading a bit of the documentation I was struck by the fact that it appears that the snapvault snap sched command can only schedule hourly, daily and weekly snapshots. Is there not a way to schedule monthly and yearly snapshots? Also, I don't see a way to specify that I want to keep one (or more) particular snapshots for a greater length of time without changing the whole destination volumes retention period. Is this correct? Thanks for any insight on this. -- Romeo Theriault

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Re: snapmirror dest volumes have guarantee error after DOT upgrade
by Stephen C. Losen 20 Nov '08

20 Nov '08

> > Hello Toasters, > > I upgraded a FAS6040 from 7.2.4 to 7.3. It has several snapmirror > destination volumes and now I am getting these errors in the > messages file whenever snapmirror runs: > > Sun Nov 16 00:15:25 EST [wafl.vol.guarantee.fail:error]: Space for > volume lib_content0 is NOT guaranteed > Thanks for all the help. I figured out my problem -- I had over committed an aggregate when I was setting up my snapmirror dest volumes under DOT 7.2.4. Under 7.2.4 size guarantee was disabled for snapmirror dest volumes. The free space for the aggregate reported by "df -A" was exaggerated, so I mistakenly put too many dest volumes in the aggregate. When I added up the sizes of the volumes they exceeded the size of the aggregate and 7.3 complained about this. I moved one dest volume to a different aggregate and that fixed the problem. I also set the volume option "guarantee" to "volume" on the destination volumes since the upgrade left it in the state "volume(disabled)". Steve Losen scl(a)virginia.edu phone: 434-924-0640 University of Virginia ITC Unix Support

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Mounting read-only snapshots using open-iscsi?
by David L. Lambert 19 Nov '08

19 Nov '08

We acquired a cluster of NetApp filers a few months ago with only an iSCSI license (no NFS or CIFS access), intending to use it for data volumes on our Linux and Windows hosts and later for virtualization. We have one production Gentoo system mounting a data volume from the filer using open-iscsi, and we have several other Gentoo and Ubuntu systems that we would like to configure that way as well. We also have an Ubuntu system connected to a tape library. We would like to take snapshots of the data-volumes that need to be backed up, mount those snapshots on the backup host, and do an incremental backup from the mounted filesystem. Probably we would partition each LUN with one Linux partition, and put an ext3 or reiserfs filesystem with a cluster-unique label on that partition. Then we could take a set of snapshots for the backup, map all the snapshot LUNs to the backup-host, do iSCSI discovery on the backup-host, mount each partition (listed in a configuration-file) with a "mount LABEL=..." command, perform the backup, unmount the partition, do an iSCSI logout, and delete all the snapshots. Has anyone gotten a setup like this to work? -- David Lee Lambert Software Developer, Precision Motor Transport Group, LLC 517-349-3011 x223 (work) ... 586-873-8813 (cell)

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[Fwd: Re: Windows SYSTEM account paired with DNS alias results in NULL user authentication attempts.]
by Adam McDougall 19 Nov '08

19 Nov '08

Forwarding on behalf of a co-worker who can't seem to post.

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pointing a tsm ndmp mover at smo-fired snapshots
by Nick Silkey 18 Nov '08

18 Nov '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 (NB: Resent from $oldjob. Newly-subscribed identity is having issues posting.) Toasters -- We are currently looking for a means to point a TSM NDMP mover at SMO-initiated snapshots. The TSM maintainers are currently defining 'virtual filesystem mappings' to point the TSM NDMP mover at WAFL snaps on non-Oracle volumes. This works like a champ due to consistent naming with scheduled WAFL snaps (nightly.0, etc). Since introducing SMO, we now have quiesced, consistent Oracle data in snapshots. Unfortunately the naming of these SMO snaps is nowhere near as graceful as 'nightly.0', to the chagrin of TSM. Has anyone here dealt with reconciling SMO snap name spew along with pointing a TSM NDMP mover at a consistently-named SMO snap space? Insight appreciated. Thanks. - -- Nick -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin) iEYEARECAAYFAkkhrCkACgkQrDQjhjXrMeJ5ewCgp6+BqV9MNOC4iqCkNNKJFACJ tWYAnivf2p3j5pgup9SryVQaWhkQWTDt =3twI -----END PGP SIGNATURE-----

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FAS6070 OPS
by admin＠berkcom.net 17 Nov '08

17 Nov '08

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pointing a tsm ndmp mover at smo-fired snapshots
by Nick Silkey 17 Nov '08

17 Nov '08

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pointing a tsm ndmp mover at smo-fired snapshots
by Nick Silkey 17 Nov '08

17 Nov '08

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Removing a shelf.
by Ray Van Dolson 17 Nov '08

17 Nov '08

Hi all; We have a loaner NetApp that has three shelves on it. One of those shelves needs to be returned to the vendor. An aggregate spans two shelves, one of which is the shelf that needs to be returned. This aggregate contains a FlexVol currently in use. I'd like to preserve the FlexVol but remove the shelf. What are my options? Doesn't look like I can shrink an aggregate. Is my best bet to shut down everything usin the FlexVol, then vol copy it to another aggregate, destroy the original aggregate, remove the shelf and then recreate the aggregate again? Thanks in advance! Ray

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snapmirror dest volumes have guarantee error after DOT upgrade
by Stephen C. Losen 17 Nov '08

17 Nov '08

Hello Toasters, I upgraded a FAS6040 from 7.2.4 to 7.3. It has several snapmirror destination volumes and now I am getting these errors in the messages file whenever snapmirror runs: Sun Nov 16 00:15:25 EST [wafl.vol.guarantee.fail:error]: Space for volume lib_content0 is NOT guaranteed vol options lib_content0 shows this: nosnap=off, nosnapdir=off, minra=off, no_atime_update=off, nvfail=off, ignore_inconsistent=off, snapmirrored=on, upgraded_replica, create_ucode=off, convert_ucode=off, maxdirsize=62914, schedsnapname=ordinal, fs_size_fixed=on, compression=off, guarantee=volume(disabled), svo_enable=off, svo_checksum=off, svo_allow_rman=off, svo_reject_errors=off, no_i2p=off, fractional_reserve=0, extent=off, try_first=volume_grow, snapshot_clone_dependency=off The above only happens to snapmirror destination volumes. We also have non-snapmirrored volumes in the same aggregate and they do not show this behavior, so it seems to be related to snapmirror. There is plenty of room in the containing aggregate: df -Ah aggr1 aggr1 10TB 7422GB 3006GB 71% aggr1/.snapshot 0GB 0GB 0GB ---% The total size of the volumes in aggr1 is nowhere near filling it. The filer with the snapmirror source volumes is running 7.2.3. Steve Losen scl(a)virginia.edu phone: 434-924-0640 University of Virginia ITC Unix Support

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snapmirror dest volumes have guarantee error after DOT upgrade
by Stephen C. Losen 17 Nov '08

17 Nov '08

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snapmirror dest volumes have guarantee error after DOT upgrade
by Stephen C. Losen 17 Nov '08

17 Nov '08

1 0

Re: Removing a shelf.
by Ray Van Dolson 14 Nov '08

14 Nov '08

On Fri, Nov 14, 2008 at 02:08:34PM -0800, Jeff Mohler wrote: > None..just when that is done do: > > vol options root vol1new, and reboot. Nice. Too bad about the reboot being necessary, but makes sense. Found some KB's on NOW to read regarding this as well. Learning experience! Thanks all, Ray

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Re: FAS6070 OPS
by tmacmd＠gmail.com 14 Nov '08

14 Nov '08

My gx cluster (2x6070 heads) was yielding 2-3 gigaBYTES per second under load Does that help? I see upwards of 5 gBYTES per second with 4 heads (2x6070 and 2x6080) --tmac ------Original Message------ From: admin(a)berkcom.net Sender: owner-toasters(a)mathworks.com To: NetApp Toasters List Subject: FAS6070 OPS Sent: Nov 14, 2008 3:19 PM Anyone out there running a FAS6070 or FAS6030 hard? I have been trying to find real world NFS OPS numbers on this head and cant seem to. I know all OPS are not created equal but a peak OPS and what type of traffic you are pushing at it would be a great help. Thanks Jack *disclaimer* Berkcom.net does not have any personal or business relationship to berkcom.com or Berkeley Communications. Sent from my Verizon Wireless BlackBerry

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options cifs.max_mpx
by Todd C. Merrill 14 Nov '08

14 Nov '08

Anybody consciously set this to something other than the default value of 50? If you have raised it, why did you do so, and more importantly, did you see any negative impact on the *toaster*? We're currently at 253 in one of our environments, and we're being asked to bump it to the maximum recommended value (1124). I've read the NOW articles on the parameter, so no need to explain what it is or how it works. I'm just looking for experience, good or bad, for raising it to the much larger values. This environment already has our Windows machines beating the crap out of a handful of 6070's, and I'm proceeding cautiously before giving each Windows client EVEN MORE connections to the toasters... Until next time... The MathWorks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com --- low the deswizzling to complete. We are running 7.2.4, which doesn't have the apparent deswizzle re-start capabilities in later versions. We stopped all regular snapshots, all snapmirrors, and all snapvaults to the volumes in question, and let the deswizzling run from Friday night through the weekend. By Tue morning, it wasn't finished. :( So, the next weekend, we stopped all snapshot activity *and* deleted all but two snapshots on the affected volumes (we had 30-40 prior). That was barely enough...the deswizzle scans finished by 7 AM the following Tuesday. These weren't extraordinary volumes...just user data (home directories) with volume sizes of about 500 GB with a couple million files. So, we are back to normal operating load levels now. Yea! (I think a knowledge base article on NOW is in order for this consequence of running volume snapmirrors. It took us by surprise, and it took the collective knowledge of this mailing list to nail down the answer.) Until next time... The MathWorks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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