Very strange, can you explain the following lines:

* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of this level
1 dump: Mon Jun 13 17:30:12 2005.
* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of last level
0 dump: Sun Jun 12 17:30:10 2005.

* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of this level
2 dump: Tue Jun 14 17:30:09 2005.
* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of last level
1 dump: Mon Jun 13 17:30:12 2005.

* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of this level
3 dump: Wed Jun 15 17:30:10 2005.
* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of last level
2 dump: Tue Jun 14 17:30:09 2005.

* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of this level
4 dump: Thu Jun 16 17:30:09 2005.
* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of last level
3 dump: Wed Jun 15 17:30:10 2005.

* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of this level
5 dump: Fri Jun 17 17:30:21 2005.
* fth02n:/vol/vol0 nsrndmp_save: NDMP Service Log: DUMP: Date of last level
4 dump: Thu Jun 16 17:30:09 2005.

And the following from the NetApp documentation:

LEVEL 0-9 Default 0 
Specifies the backup level. Level 0 copies the
entire dataset. Incremental backup levels,
specified by values above 0, copy all files new or
modified since the last incremental backup. For
example, a level 1 backs up new or modified files
since the level 0 backup, a level 2 backs up new or
modified files since the level 1 backup, and so on.

Tape Backup and Recovery Guide Data ONTAP 7.0 pg.162


Bye
Ernie

-----Original Message-----
From: Joel Krajden [mailto:joelk AT encs.concordia DOT ca] 
Sent: Friday, June 17, 2005 4:20 PM
To: Legato NetWorker discussion; Ernst Bokkelkamp
Subject: Re: [Networker] Netapp, ndmp, and incremental backups.


NetApp NDMP only supports levels 0, 1, and 2. So you have to work with a 
schedule in Networker that is more restricted.

Joel

Ernst Bokkelkamp wrote:
> (sorry, finger problems cause previous message to leave before I 
> finished
> it)
> 
> You are absolutely right, subsequent level 1 backups do not work.
> 
> Please note that you must look very carefully at the exact wording and 
> the placement of the level description in the documentation. Full 
> followed by multiple level 1 does function like incremental on normal 
> (not NDMP) backups and most likely NDMP backups, and also not with 
> NetApp. The description being referred to is a "generic" and does not 
> apply to Ontap. You must consider that the level is passed on to the 
> dump application, and the NetApp dump command works differently (it 
> does not know incremental).
>  
>>>From a previous message on NetApp dump levels:
> 
> 
>>  0-9     Dump levels.  A level 0, full backup, guarantees the entire file
>>          system is copied.  A level number above 0, incremental backup,
>>          tells dump to copy all files new or modified since the last 
>> dump
> 
> of
> 
>>          a lower level.
>>
>>          The default dump level is 0.
> 
> 
> The wording of the Networker manual (glossary) differs slightly:
> 
> A full (f) backup backs up all files, regardless of
> whether they have changed. Levels one through nine
> [1-9] back up files that have changed since the last
> lower numbered backup level. An incremental (incr)
> backup backs up only files that have changed since the
> last backup.
> 
> And in the admin manual the following explenation can be found:
> 
> . A level 1 backup backs up all files that have changed since the most 
> recent full backup (considered a level zero). . A level 3 backup backs 
> up all files that have changed since the most recent backup of level 
> 2, level 1, or full backup. For example, if the most recent backup was 
> at level full, then a level 3 backup backs up all files that changed 
> since the full backup. However, if the most recent backup was at level 
> 2, then a level 3 backup backs up only those files changed since the 
> level 2 backup. . A level 9 backs up all the files that have changed 
> since the most recent backup of any level except level 9.
> 
>>>From the above you can conclude that the only method to mimic 
>>incremental
> backup is to do a full backup followed by increasing levels. Such as 
> Full,1,2,3,4,5,6,7,8,9. This implies that the number of incrementals 
> can't exceed 9 in total.
> 
> However, incremental will not work with NetApp if you forget to 
> specify "UPDATE=Y". This parameter actually instructs Ontap NDMP to 
> update the dumpdates file which is used to determine what should be 
> backed up.
> 
> Bye
> Ernie
> 
> 
> -----Original Message-----
> From: Legato NetWorker discussion 
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of Randy Doering
> Sent: Thursday, June 16, 2005 10:28 PM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: Re: [Networker] Netapp, ndmp, and incremental backups.
> 
> 
> I've been meaning to ask a question about that paragraph, but hadn't 
> gotten around to it. I don't think that subsequent Level 1 backups 
> will function like incremental backups. A Level 1 on Day 2 goes back 
> to the Day 1 Full, but a Level 1 on Day 3 will als o go back to the 
> Day1 Full (including what had already been backed up on Day 2).
> 
> Is this correct?
> 
> Thanks,
> Randy
> 
> -------------- Original message --------------
> 
> 
>>>>>From the NW 7.1 documentation CD (May 2004), the Unix administrator
>>>guide, in the NDMP chapter, under "limitations ...(p.532):
>>>* The NetWorker software does not support incremental backup
>>>settings
>>>for NDMP backups. If you select the incremental setting, the NetWorker 
>>>server performs a full backup. However, you can schedule level backups 
>>>to function like incremental backups. For example, complete a full 
>>>backup on day 1 and level 1 backups on days 2 through 7. 
>>>Itzik 
>>
>>Thank you. It's the same wording in the 7.2 manual, but I completely
>>overlooked it.
>>
>>
>>--
>>Darren Dunham ddunham AT taos DOT com
>>Senior Technical Consultant TAOS http://www.taos.com/
>>Got some Dr Pepper? San Francisco, CA bay area 
>>< This line left intentionally blank to confuse you. > 
>>
>>--
>>Note: To sign off this list, send a "signoff networker" command via
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>>http://listserv.temple.edu/archives/networker.html where you can 
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> 
> 
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-- 
| Joel Krajden              | Rm: EV-105,  Tel: 514 848-2424 3052        |
|                           | Fax: 514 848-2830                          |
| Senior Systems Analyst    | Email: joelk AT encs.concordia DOT ca             
|
| Engineering & Computer Sc.| http://www.cs.concordia.ca/~staffcs/joelk  |
| Concordia University      |   This is a circus, and the clowns are     |
| Montreal, Canada          |   supposed to make you laugh, not cry.     |

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Note: To sign off this list, send a "signoff networker" command via email
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