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13520 discussions

Symlinks and CIFS, FTP (and NFS)
by Francois Joubert 27 Jun '07

27 Jun '07

I would like to manage the symlinks in use for the whole company at a certain directory depth on our filers (FAS3050 + OnTap 7.2.2). I would like to create the following setup so that users see a single share when they browse the filer via CIFS and FTP but give them access to data spread over more than 1 aggregate, volume and qtree. Filer_1 ======= Aggregate_1 Data_volume_1 Qtree_1 All_data (single share visible to company) Real_dir_1 Symlnk_Real_dir_2 Symlnk_Real_dir_3 Symlnk_Real_dir_4 Aggregate_2 Data_volume_2 Qtree_2 Real_dir_2 Data_volume_3 Qtree_3 Real_dir_3 Data_volume_4 Qtree_4 Real_dir_4 I am aware that I need to configure the widelinks option. How do I create the symlinks from my admin host (FreeBSD) which mounts all the volumes over NFS for data management purposes? I don't want to use a Windows machine to create the links. My users are Win2K and MacOSX clients and access their data using CIFS and FTP (NFS may be used later). I have a number of samba servers with this data directory setup as a single share visible to users but data spread over a number of disks. I use the unix "ln -s" command to create the necessary symlinks on the samba servers. Feel free to point out what may be glaringly obvious. Thanks Francois

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Running reallocate - how long did it take, and can you stop/pause it?
by Hadrian Baron 25 Jun '07

25 Jun '07

We're about to run a reallocate, and we were wondering what we should expect. We have a heavily (over)utilized filer with many hot disks. We are worried that this reallocate could make it unusable for the duration - however long that may be. Has anyone been through this, and also can you stop or pause a reallocate? Thanks, Hadrian Baron Network Engineer

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FW: NDMP tuning on a 270c
by Lerch, Alfred 22 Jun '07

22 Jun '07

And to the list as well ________________________________ From: Lerch, Alfred Sent: Donnerstag, 21. Juni 2007 22:48 To: 'Page, Jeremy'; 'owner-toasters(a)mathworks.com' Subject: RE: NDMP tuning on a 270c Hi Jeremy, see NetApp Bug 96894: Phase I of NDMP based backups is slow fixed in 7.0.6 - so this could well be the issue you encounter regards alfred Bug Detail Bug ID 96894 Title Phase I of NDMP based backups is slow. Duplicate of Bug Severity <http://now.netapp.com/NOW/knowledge/docs/defs/boldefs.shtml#severity> 3 - Serious inconvenience Bug Status <http://now.netapp.com/NOW/knowledge/docs/defs/boldefs.shtml#status> Fixed Product <http://now.netapp.com/NOW/knowledge/docs/defs/boldefs.shtml#product> Data ONTAP Bug Type <http://now.netapp.com/NOW/knowledge/docs/defs/boldefs.shtml#type> Backup/Restore Description Formatted <http://now.netapp.com/NOW/cgi-bin/bol?Type=Plain&Display=96894> For NDMP backups with File History enabled, Phase I is slow. The extent of slowness may depend on fragmentation of the inode file and the file system. With Data Ontap 6.4 onwards, NDMP backups with File History add some processing in Phase I. This processing is required for DAR Enhancements (A restore time feature), which are a part of Data Ontap 6.4 or beyond. The slowness is attributable to performance bottlenecks in this additional processing. Workaround Formatted <http://now.netapp.com/NOW/cgi-bin/bol?Type=Plain&Display=96894> Backups without file history continue to perform as expected. For backups where performance of Phase I is bothersome, file history can be turned off temporarily until a fix is available. For a workaround to turn off the additional processing during Phase I (Offset map generation), without disabling the file history, please track bug 102211. Notes Formatted <http://now.netapp.com/NOW/cgi-bin/bol?Type=Plain&Display=96894> Related Solutions Fixed-In Version * Data ONTAP 6.4.2P4 <http://now.netapp.com/download/software/ontap/6.4.2P4/> (First Fixed) - Fixed * Data ONTAP 6.4.5 <http://now.netapp.com/download/software/ontap/6.4.5/> (GA <http://now.netapp.com/download/defs/ontap.shtml> ) - Fixed * Data ONTAP 6.5.7 <http://now.netapp.com/download/software/ontap/6.5.7/> (GA <http://now.netapp.com/download/defs/ontap.shtml> ) - Fixed * Data ONTAP 7.0.6 <http://now.netapp.com/download/software/ontap/7.0.6/> (GD <http://now.netapp.com/download/defs/ontap.shtml> ) - Fixed * Data ONTAP 7.1.2.1 <http://now.netapp.com/download/software/ontap/7.1.2.1/> (GA <http://now.netapp.com/download/defs/ontap.shtml> ) - Fixed * Data ONTAP 7.2.2 <http://now.netapp.com/download/software/ontap/7.2.2/> (GD <http://now.netapp.com/download/defs/ontap.shtml> ) - Fixed ________________________________ From: Page, Jeremy [mailto:jeremy.page@gilbarco.com] Sent: Donnerstag, 21. Juni 2007 14:02 To: Lerch, Alfred Subject: RE: NDMP tuning on a 270c 7.05. I was just in Munich Monday, had a great time. Jeremy M. Page, MCSE, CNA, CCNA _____ * email:Jeremy.Page@gilbarco.com - ( phone: 336.547.5399 - 6 fax: 336.547.5163 - ( cell: 336.601.7274 ________________________________ From: Lerch, Alfred [mailto:alfred_lerch@mentor.com] Sent: Thursday, June 21, 2007 3:26 AM To: Page, Jeremy Subject: RE: NDMP tuning on a 270c Hi Jeremy, which ONTAP version are you using? We had such an issue two years ago and it was a bug in ONTAP. (Unfortunately now.netapp.com is out of order right now so I cannot look it up.) regards alfred +====================================================================+ |Alfred Lerch Mentor Graphics Deutschland GmbH| |Network & System Administrator Arnulfstrasse 201| |IT ESC Europe D-80634 Muenchen, Germany| |email: alfred_lerch(a)mentor.com Geschäftsführer: Dean Freed| |Tel. : +49 89 57096-241 Registergericht München HRB 106955| |Mobile: +49 172 8915200 Fax : +49 89 57096-400| +====================================================================+ ________________________________ From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Page, Jeremy Sent: Mittwoch, 20. Juni 2007 14:26 Cc: toasters(a)mathworks.com Subject: RE: NDMP tuning on a 270c I guess my gripe is why does Netbackup lock a drive when it's doing the scan. I understand it can't do the backup until it knows *what* it's going to backup, the confusion on my part is why that would lock a tape. Also, for some reason (I'm not the backup guy so I am probably missing something) we need all our tapes to do a single file restore anyways, seems like you are saying that's not normal. Jeremy M. Page, MCSE, CNA, CCNA _____ * email:Jeremy.Page@gilbarco.com - ( phone: 336.547.5399 - 6 fax: 336.547.5163 - ( cell: 336.601.7274 ________________________________ From: tmac [mailto:tmacmd@gmail.com] Sent: Tuesday, June 19, 2007 2:47 PM To: Page, Jeremy Cc: toasters(a)mathworks.com Subject: Re: NDMP tuning on a 270c The Miserable File History problem.... I actually have a level 0 that takes over 8 hours to pass file history info which means the dump does not start until that point. Just for kicks, you could modify your policy to have the first line as "set hist = n" (without quotes). This will kill the file history. You will be unable to restore files (directories only) and you will not have DAR which means you will have to read the ENTIRE backup tape or tape set. Instead of looking at pure size, do a "df -h" and a "df -i" to how much and how many (files) you are backing up. You can always dived the size used by the files used to see average file size. Heck for that matter you could scan the filesystem with the filestats command and you could scan from a NFS client to see which directories are huge (I have a number of directories that are 50MB in size-> this KILLLLS a backup) On 6/19/07, Page, Jeremy <jeremy.page(a)gilbarco.com> wrote: We are backing up a 270c nightly with Netbackup via NDMP to a dual drive LTO3 machine (only one drive is used for to backup the filer). There are 2.25 TB on one head and 1.1TB on the other. For a full backup it takes about 10 hours to write to tape, which I don't think is too bad (larger volumes hit 31200 KB/sec reported by Netbackup), but the differentials take 5 hours to run,even though the delta on our data is very small. I suspect this is more of a Netbackup issue then a filer based one but wanted to throw it out there incase there was something I should look at on the host side. This is over a normal gigE switched network connection with the default settings on the filer, network-wise. We are not using virtual interfaces, both heads have a single 1 gig connection to the LAN. Any suggestions or inventive flames are welcome. This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately. -- --tmac RedHat Certified Engineer This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately. This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

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RE: faulty snmp output?
by Kenneth Heal 21 Jun '07

21 Jun '07

Hallo AndreasThis sounds like bug 68758:http://now.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=68758The text of the bug is:=====The SNMP MIB entry dfKBytesTotal was deprecated in ONTAP 6.0With the advent of larger capacity volumes, the value of dfKBytesTotal that is retrieved via snmp can be a negative number because the SNMP protocol is limited to a 4 byte integer. Instead use dfHighTotalKBytes and dfLowTotalKBytes to retrieve the whole df value.For ONTAP 6.0 and above please use dfHighTotalKBytes and dfLowTotalKBytes which represent the high and low 32 bits of the total df value. The actual total KBbytes can be determined by the psuedocode:uint8 df_high = dfHighTotalKBytes;uint8 df_low = dfLowTotalKBytes;uint8 df = (df_high << 32) | df_low; /* or (df_high << 32) + df_low; */For systems prior to ONTAP 6.0, if dfKBytesTotal returns a negative number: Use the 'df' command on the console or via rsh to obtain the actual value, or programmatically alter the code doing the SNMP get to understand that a negative value for dfKBytesTotal is a wrap-around condition.===== Kindest regards,Kenneth HealStorage ConsultantSenet Eindhoven bv> Subject: faulty snmp output?> Date: Thu, 21 Jun 2007 18:05:42 +0200> From: andreas.buerger(a)wincor-nixdorf.com> To: toasters(a)mathworks.com> > Hi,> > I am just testing with some SNMP on our Filers.> During some tests I mentioned something, I can't explain.> > The SNMP query dfKBytesTotal returns negative output on some volumes:> > > snmpget -v 1 -t 30 -Osq -c public FILER> NETWORK-APPLIANCE-MIB::dfKBytesTotal.19> dfKBytesTotal.19 -2071986176> dfKBytesTotal.20 0> > The equal command directly issued from the filer returns the following:> > > ssh FILER df -k VOLUME> Filesystem total used avail capacity Mounted> on> /vol/VOLUME/ 2222981120KB 2030845132KB 192135988KB 91%> /vol/homes02/> /vol/VOLUME/.snapshot 0KB 40077688KB 0KB ---%> /vol/homes02/.snapshot> > Does anybody have an idea why the snmp output is negative and not same> as the df -k from the filer?> > Here some information of the test environment:> > MIB Version: Version 1.19.3, March 2007 (on filer and localhost)> Filer: FAS3050 with OnTap 7.0.2> > > Best regards> Andreas> > -----------------------------------------> Wincor Nixdorf Int. GmbH> WN CIO4 Computing & Storage> Heinz-Nixdorf-Ring 1> 33106 Paderborn> > Phone: +49 5251 693 4215> Fax: +49 5251 693 4200> Mail: andreas.buerger(a)wincor-nixdorf.com> -----------------------------------------> > > > > > > _________________________________________________________________ Make every IM count. Download Windows Live Messenger and join the i’m Initiative now. It’s free. http://im.live.com/messenger/im/home/?source=TAGWL_June07

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faulty snmp output?
by Buerger, Andreas 21 Jun '07

21 Jun '07

Hi, I am just testing with some SNMP on our Filers. During some tests I mentioned something, I can't explain. The SNMP query dfKBytesTotal returns negative output on some volumes: > snmpget -v 1 -t 30 -Osq -c public FILER NETWORK-APPLIANCE-MIB::dfKBytesTotal.19 dfKBytesTotal.19 -2071986176 dfKBytesTotal.20 0 The equal command directly issued from the filer returns the following: > ssh FILER df -k VOLUME Filesystem total used avail capacity Mounted on /vol/VOLUME/ 2222981120KB 2030845132KB 192135988KB 91% /vol/homes02/ /vol/VOLUME/.snapshot 0KB 40077688KB 0KB ---% /vol/homes02/.snapshot Does anybody have an idea why the snmp output is negative and not same as the df -k from the filer? Here some information of the test environment: MIB Version: Version 1.19.3, March 2007 (on filer and localhost) Filer: FAS3050 with OnTap 7.0.2 Best regards Andreas ----------------------------------------- Wincor Nixdorf Int. GmbH WN CIO4 Computing & Storage Heinz-Nixdorf-Ring 1 33106 Paderborn Phone: +49 5251 693 4215 Fax: +49 5251 693 4200 Mail: andreas.buerger(a)wincor-nixdorf.com -----------------------------------------

6 5

LACP
by Carl Howell 20 Jun '07

20 Jun '07

Does anyone know what the correct LACP settings are for connectivity from a Cisco 6509 to a filer running 7.2.2? On, off, active, or passive? I don't see this referenced anywhere in the literature. Thanks, --Carl

3 2

NDMP tuning on a 270c
by Page, Jeremy 20 Jun '07

20 Jun '07

We are backing up a 270c nightly with Netbackup via NDMP to a dual drive LTO3 machine (only one drive is used for to backup the filer). There are 2.25 TB on one head and 1.1TB on the other. For a full backup it takes about 10 hours to write to tape, which I don't think is too bad (larger volumes hit 31200 KB/sec reported by Netbackup), but the differentials take 5 hours to run,even though the delta on our data is very small. I suspect this is more of a Netbackup issue then a filer based one but wanted to throw it out there incase there was something I should look at on the host side. This is over a normal gigE switched network connection with the default settings on the filer, network-wise. We are not using virtual interfaces, both heads have a single 1 gig connection to the LAN. Any suggestions or inventive flames are welcome. This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

5 5

DFM network stats with vifs
by Leeds, Daniel 19 Jun '07

19 Jun '07

we use DFM 3.5, the network traffic i/o graphs in DFM display nothing for us--they never have in previous versions either. we use multi vifs across several interfaces and then create a viftrunk with tagged vlans. has anyone setup similar and gotten network traffic graphing to work in dfm? -- Daniel Leeds Senior Systems Administrator Edmunds.com

2 2

Cifs audit logs
by Jon Hill 15 Jun '07

15 Jun '07

We've just switched from a Windows file server to a 3020c and are experiencing significant issues with cifs auditing. We have several directories that need to be monitored and we have turned on auditing via NTFS (right-click | properties | security | advanced | auditing). On the old file server we used a third-party tool (ScriptLogic) to monitor CIFS access but it only works on Windows servers. The problem we have is if a user opens up one of the monitored folders, the filer spits out about 300 events for each file. There are three or maybe four slight differences between the 300 events (some might refer to SMBRead and others SMBReadEA, for example), but at least 50 events are completely identical to each other in every way. We've been auditing about 19,000 files (<4GB) for a week and we already have 10GB of .evt files. We tried limiting the audits to List Folder / Read Data, Create Files / Write Data, Create Folders / Append Data, Delete, Change Permissions and Take Ownership, and we applied only to files. It didn't improve things from what we could see. NetApp support told us to contact MS but that didn't get us anywhere so now we're looking for third-party alternatives. Can anyone suggest a good tool that can gather .evt files from a specified directory, weed out duplicates and store the end result in either a database or another .evt file?

3 3

multiple shelf aggregate or single shelf aggregates
by Paul Letta 15 Jun '07

15 Jun '07

We have a new FAS3040 with 3 shelves of 500GB SATA's. It has an onboard controller with 4 ports, and we have 2 expansion controllers with 2 ports each. I'm trying to think about the aggregate layouts. I am thinking that since these are SATA drives, I should put all 3 shelves into 1 big aggregate for performance (to get as many spindles as possible) and then just use flex vols. But then I also am thinking that if I use 3 separate aggregates (1 per shelf), I would have better data protection in case I loose a whole shelf (only loose volumes on that one shelf). Since the raid_size is maxed at 16 for SATA anyways, I am going to end up with a raid group per shelf no matter what (defaults to 14). I've done some write tests. I had an aggregate made from 1 shelf and another aggregate made up of 2 shelves. I didn't see much difference. I was write testing via NFS mounts. The client was on a GigE, and the filer was on a VIF made up of all 4 GigE ports. Is the performance gains from having mutli-shelf aggregates worth the loss of the data protection from a whole shelf failure. As for the FC connections, currently I have all 3 shelves daisy chained with 2 loops, one loop is on the on board and the other loop is on one of the expansion cards. Suggestions ? Thanks ! Paul

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