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13532 discussions

c-mode how to set NDMP blocking factor
by Mike Thompson 09 Mar '12

09 Mar '12

Hey all, I'm trying to increase performance of fiber channel NDMP backups we have going to a remote tape robot (bridged over WAN via some Cienna gear). I would like to try increasing the blocking factor that the filer uses when writing to tape over NDMP. I'm running Ontap 8.0.1 c-mode, with NetBackup 6.5. None of the docs explain how to do this, but there is mention of blocking factor in the Data Protection manual. All it says is that block size up to 256KB is supported, and that the variable MOVER_RECORD_SIZE is what controls that. It appears that you can send variable settings to NDMP by using 'set variable=value' at the top of your includes list in the backup policy in NetBackup. I have tried putting 'set MOVER_RECORD_SIZE=256' at the top of my includes list, and running the job, but I get this in the /mroot/etc/mlog/ndmpd.log: INFO: Pass through of unknown START BACKUP variable MOVER_RECORD_SIZE with value 256 I have also tried setting the variable DATA_BLOCK_SIZE, but get the same result. So the question is, how do I set the blocking factor for NDMP backups?

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HbaPortToIomSquares_Alert
by Jon Bousselot 09 Mar '12

09 Mar '12

I've seen this message on two different filers now, a 2040 and a 3140 with multiple DS4243 shelves. It only shows up during a reboot, and I'm not finding anything on the NOW site. Both systems are running 8.1RC2. Any one else seeing this? -Jon Subject: HA Group Notification from filer01 (SAS Connectivity Monitor: HbaPortToIomSquares_Alert[2c]) WARNING

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user quota management.....by users
by Kennedy, Jeffrey 07 Mar '12

07 Mar '12

Has anyone come across, or developed, a utility to allow non-privileged users to manage user quotas on 7G? The situation is a need to allow certain leads the ability to manage user quotas for specific file systems only. Not so much the default user quota but unique quotas. Thanks. Jeff Kennedy Qualcomm, Incorporated QCT Engineering Compute 858-651-6592

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DFM migration.
by Jeff Cleverley 06 Mar '12

06 Mar '12

Greetings, I need to change the hardware and OS for my current 3.7 DFM server. I've set up another box with the new OS and installed the 4.0.2 release. I have successfully imported (AFAIK) a copy of the old database. I am not the primary user of DFM and would like to have the primary user be able to do some testing and looking around before trying to make a more permanent switch. My concern is having 2 instances of DFM trying to run backups, purge snapshots, etc. The new host name is not listed in hosts.equiv and it doesn't have ssh keys on filers. There are no entries for the ndmp credentials. Will having 2 of these online cause a problem? If so, what is the best way to have the second one online in more of a read-only/browse type mode? For those who will ask, I'm not going straight to OnCommand yet because I don't know enough about it yet. There are also several packages that seem to only run on Windows, and some that mention only running on 32 bit OS and hardware. We are primarily a linux lab and I don't want to have to set up a Windows server or have to go to Goodwill and try to find a 32 bit server :-) Jeff -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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Experience with Backup Software using NDMP
by Steffen Knauf 04 Mar '12

04 Mar '12

Hi Toasters, we consider to buy a new Backup Software and i don't know whats the best Software. Now, we are using Netvault (vian ndmp)but it don't works very well (e.g. problems with deduplication.....). We backup ~ 10 TB via NDMP to a LTO 5 Tapelibrary. Perhaps someone have experience with other Backup Software. Netvault sucks generally ;( greets Steffen

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max directory depth and max dir size
by Nicholas Bernstein 02 Mar '12

02 Mar '12

Maybe I'm just being an idiot, but I couldn't seem to find best practices that describe max directory depth and size. I know anecdotally directories shouldn't be larger than 10mb (the directory itself, not the contents) but I can't seem to find an official best practice guide that has these. Can anyone point me to the right doc? Thanks in advance, Nick

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backing up a small toaster
by Tom Yates 02 Mar '12

02 Mar '12

Is there anyone out there backing up a toaster *not* using a commercial NDMP-compliant product (eg, Netbackup)? How do you do it? Do I have any options besides (a) direct-attach a dedicated tape drive or (b) commercial NDMP-enabled software, which will enable me to get both UNIX-specific information and CIFS-specific information onto tape safely? Thanks for any light anyone can shed. -- Tom Yates - http://www.teaparty.net

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snapshot bolus after re-enabling de-dup
by Fletcher Cocquyt 01 Mar '12

01 Mar '12

We re-enabled dedup on one of our volumes yesterday and observed the 'df-sh' savings go from 20% to 37% (yay!) but the volume usage jumped up snap list revealed a big delta from our usual nightly snapshot delta: > snap list vm65net Volume vm65net working... %/used %/total date name ---------- ---------- ------------ -------- 0% ( 0%) 0% ( 0%) Mar 01 13:47 irt-na03(1573989836)_vm65net.450 (snapmirror) 37% (37%) 27% (27%) Mar 01 00:00 nightly.0 39% ( 4%) 29% ( 2%) Feb 29 00:00 nightly.1 41% ( 5%) 32% ( 2%) Feb 28 00:00 nightly.2 42% ( 4%) 33% ( 2%) Feb 27 00:01 nightly.3 43% ( 4%) 35% ( 2%) Feb 26 00:00 nightly.4 44% ( 4%) 37% ( 2%) Feb 25 00:00 nightly.5 45% ( 4%) 39% ( 2%) Feb 24 00:00 nightly.6 Is this expected behavior? (when I noted these observations I was asked "doesn't dedup work on the snapshots too?") thanks Fletcher

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Snapdrive failing to create a flexclone but only on Sundays. Works fine every other day of the week.
by Dan Finn 27 Feb '12

27 Feb '12

Long story short we have a clone of our production database that we refresh and remount on a linux server every night. This is a script that is being called from cron. We recently converted the server that runs this script from a physical server to a vmware vm. Since we have done that this refresh process has failed the past 3 sunday nights. It runs every single night and it runs without errors every other night. There's not much to the script, here's the command that creates the flex clone: snapdrive snap connect -lun log/disk disk_$LUN -snapname filer:/vol/database_volume/log/disk:$SNAPNAME them we mount the flex clone that is create via iSCSI. The error that is being reported by the script is: 385 connecting filer:/vol/database_volume/log/disk: 386 creating unrestricted volume clone filer:/vol/clone_volume ... failure 387 0002-098 Admin error: Failed to create volume clone clone_volume on filer filer : The volume is not currently available The error from the sd-trace.log: 173338 00:30:54 02/26/12 [f7f61b90]i,2,18,FilerZephyr::volume_clone_create: zapi filer root "" volume-clone-create parent-snapsho t daily-2012-02-26 parent-volume database_volume space-reserve none volume planningdb_rootdb_log 173339 00:30:54 02/26/12 [f7f61b90]i,2,18,FilerZephyr::volume_clone_create in = <volume-clone-create> 173340 <parent-volume>database_volume</parent-volume> 173341 <parent-snapshot>daily-2012-02-26</parent-snapshot> 173342 <volume>clone_volume</volume> 173343 <space-reserve>none</space-reserve> 173344 </volume-clone-create> 173345 173346 00:30:54 02/26/12 [f7f61b90]i,2,18,FilerZephyr::output in = <results reason="The volume is not currently available" statu s="failed" errno="13156"/> 173347 173348 00:30:54 02/26/12 [f7f61b90]E,2,18,FilerZephyr:: (filer) volume-clone-create failed, error: 13156: The volume is not currently available And then what's odd is if you look at the messages file on the filer, it's reporting as if the clone was successfully created: Sun Feb 26 00:29:28 MST [filer: wafl.snap.delete:info]: Snapshot copy 2012-02-24 07_00_27 daily_filer_database_volume.-.log on volume database_volume NetApp was deleted by the Data ONTAP function zapi_snapshot_delete. The unique ID for this Snapshot copy is (111, 4139408). Sun Feb 26 00:30:56 MST [filer: wafl.volume.clone.created:info]: Volume clone clone_volume of volume database_volume was created successfully. Sun Feb 26 00:30:56 MST [filer: lun.newLocation.offline:warning]: LUN /vol/clone_volume/log/disk has been taken offline to prevent map conflicts after a copy or move operation. Sun Feb 26 00:30:56 MST [filer: lun.map:info]: LUN /vol/clone_volume/disk was mapped to initiator group linux-server.domain.com_iscsi_SdIg=0 The only thing I'm wondering is if that zapi_snapshot_delete that is happening 1 second before could be causing an issue however I looked at the logs from the past sunday failure and that zapi_snapshot_delete did not happen at the same time so I'm not sure that's the issue. Any help would be really appreciated. Thanks, Dan

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bypassed disks - whats the deal?
by Fletcher Cocquyt 26 Feb '12

26 Feb '12

We've discovered a couple of these bypassed disk conditions via the flashing amber light - but this was noticed totally out of band with normal support Each time we opened a case manually and Netapp immediately sent out a disk replacement. So why is a bypassed disk not treated as a failed disk ? This kind of silent failure (in terms of Netapp monitoring and alerts) in a lights out datacenter seems negligent. Message logged on syslog server: esh.bypass.err.disk:error]: Disk 4d.49 on channels 4d/PARTNER disk shelf ID 3 ESH A bay 1 Bypassed due to the drive self bypass. BTW: I read the KB article on bypassed disks and ran the CMD to highlight BYP but it did not show BYP https://kb.netapp.com/support/index?page=content&id=3012395 thanks, Fletcher

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toasters