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

2015-06-17 10:50:16
Subject: Re: [ADSM-L] השב: [ADSM-L] Backup and res tore question
From: Paul-Andre Chasse <paul-andre.chasse AT USHERBROOKE DOT CA>
Date: Wed, 17 Jun 2015 10:48:38 -0400
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.



*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)
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>
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 

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


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
Subject: Re: [ADSM-L] Backup and restore question


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 

Best Regards,