ADSM-L

Re: [ADSM-L] השב: [ADSM-L] Backup and res tore question

2015-06-18 00:53:29
Subject: Re: [ADSM-L] השב: [ADSM-L] Backup and res tore question
From: Robert Ouzen <rouzen AT UNIV.HAIFA.AC DOT IL>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 18 Jun 2015 04:51:34 +0000
Hello Erwann , Paul-Andre

You are completely correct -mode=incremental works only on a restore of:    
restore image \\nasw\F$   F: -incremental –deletefiles     

NO on an -imagetofile !!!!!

Made a test today and works fine

Very appreciate your support ...

Best Regards

Robert  Ouzen

Haifa University
Israel

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Paul-Andre Chasse
Sent: Wednesday, June 17, 2015 5:49 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] השב: [ADSM-L] Backup and res tore question

Hi Erwann,

I should have read the entire discussion before replying to you question.

Erwann is right, the -imagetofile option can restore only a full image backup.

A full image backup is a block by block copy of your disk partition.  An 
incremental image backup is a file backup of the files that had changed since 
the last full image backup.

When you ask to restore an image backup with the -incremental option, the TSM 
client starts by restoring the full image backup and after that it apply the 
changes needed by the subsequent incremental backups.

When you ask to restore an image backup to a file, TSM cannot reconstruct a new 
image from an image from a full image backup and files from subsequent 
incremental backups.  That would be too much complicated.

Regards,

Paul-André

______________________________
*Paul-André Chassé*, B. Sc.
Analyste de l'informatique - Centre de calcul scientifique (John-S.-Bourque) 
Service des technologies de l'information Université de Sherbrooke

Tél. : 819 821-8000, poste 62582
Courriel : Paul-Andre.Chasse AT USherbrooke DOT ca


Le 2015-06-17 09:12, Robert Ouzen a écrit :
> Hi Erwann
>
> I am really lost..
> As sent in my previus message , in the test I did.After an backup 
> image (fulll) made a change on one file.
> And run a backup image F: -mode=incremental And so in the stat that 
> only one file was backup !!!!!
> So the option -mode=in remental is valid and respected the problem 
> after it when run ing a restore backup image got the source file and not the 
> changed file.
>
> Regards Robert
>
>
>
>
>
>
>
> נשלח מהטלפון הנייד של Samsung
>
>
> -------- הודעה מקורית --------
> מאת: Erwann SIMON
> תאריך:06/17/2015 1:35 PM (GMT+02:00)
> אל: ADSM-L AT VM.MARIST DOT EDU
> נושא: Re: [ADSM-L] Backup and restore question
>
> Hi Robert,
>
> I think that -incremental and –deletefiles are not available (or ignored) 
> with -imagetofile. It makes sense since -incremental would lead to a file 
> restore whereas -imagetofile leads to a bloc restore.
>
> You should note that –deletefiles is not availbale (or ignored) if 
> your backup has been done like you do : backup image F: 
> -mode=incremental
>
> --
> Best regards / Cordialement / مع تحياتي Erwann SIMON
>
> ----- Mail original -----
> De: "Robert Ouzen" <rouzen AT UNIV.HAIFA.AC DOT IL>
> À: ADSM-L AT VM.MARIST DOT EDU
> Envoyé: Mercredi 17 Juin 2015 11:57:18
> Objet: Re: [ADSM-L] Backup and restore question
>
> Hello Ronald
>
> Make sense ….  But still
>
> I made today a little test
>
> 1.    Run a backup image   F:  (Full)   (On it I have there a file test.txt 
> with content: “First full backup Image”)
>
> 2.  Edit this file test.txt and overwrite with “Incremental backup image”
>
> 3.: run a backup image F: -mode=incremental
>
> See  below the output (seems good)
>
> tsm> backup image f: -mode=incremental
>
> Total number of objects inspected:           16
> Total number of objects backed up:            1
> Total number of objects updated:              0
> Total number of objects rebound:              0
> Total number of objects deleted:              0
> Total number of objects expired:              0
> Total number of objects failed:               0
> Total number of objects encrypted:            0
> Total number of objects grew:                 0
> Total number of retries:                      0
> Total number of bytes inspected:          41.51 KB
> Total number of bytes transferred:          240  B
> Data transfer time:                        0.00 sec
> Network data transfer rate:                0.00 KB/sec
> Aggregate data transfer rate:              0.03 KB/sec
> Objects compressed by:                        0%
> Total data reduction ratio:               99.44%
> Elapsed processing time:               00:00:07
>
> 4.  did an:   restore image F: E:\DiskF.iso –imagetofile  -incremental 
> –deletefiles
>
> 5.But on the file DiskF.iso I see on the test.txt file the content of: “First 
> full backup Image”  and not  “Incremental backup image”
>
> I know I missed something but I can’t figure WHAT ???
>
> Best Regards
>
> Robert
>
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
> Of Ron Delaware
> Sent: Wednesday, June 17, 2015 9:34 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Backup and restore question
>
> Robert,
>
> You cannot perform a normal incremental once you have performed a full image, 
> unless you have two separate nodes, one doing image backups and one doing 
> file by file backups.  You can do incremental image backups but not an file 
> by file incremental.
>
>
>
> Best Regards,
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