Changes between Initial Version and Version 1 of Documentation/Short/SaveImage

Timestamp:

Jul 21, 2008, 4:16:41 AM (16 years ago)

Author:

thierry

Comment:

—

Documentation/Short/SaveImage

@@ +1 @@
+Go back --> [wiki:Tutorial Tutorials]
+[[TOC(heading=Tutorial TOC, Tutorial, Tutorial/HowToSave, depth=2)]]
+
+= How to save an existing disk image from one node of a Testbed =
+
+If you have not done so yet: 
+
+ * [http://www.orbit-lab.org/wiki/Registration Register] for an account
+ * [https://www.orbit-lab.org/schedule/ Make a reservation] on the Scheduler for a given testbed
+
+Lets assume that you registered as user 'bob' and made a reservation for the 'sb1' testbed. You then access the 'sb1' console using the command:
+
+ {{{
+  ssh bob@console.sb1.orbit-lab.org
+ }}}
+[[BR]]
+== Getting Started ==
+
+Then, to save the existing disk image on node (1,1) of the 'sb1' testbed, use the command:
+
+ {{{
+  orbit save [1,1] 
+  # will save the current disk image on node [1,1] of the 'sb1' testbed
+
+ }}}
+
+The output of this image saving process will look like the following:
+
+ {{{
+
+Domain information from the console: 'sb1'
+Saving image from node '[1,1]' from domain 'sb1'... INFO init: NodeHandler Version 4.2.0 (1272)
+ INFO init: Experiment ID: sb1_2008_07_20_23_38_04
+ ...
+ INFO stdlib: Waiting for nodes (Up/Down/Total): 0/1/1 - (still down: n_1_1)
+ ...
+ INFO n_1_1: - Saving disk image from node n_1_1 in the file 'node-1-1-2008-07-20-23-39-39.ndz'
+ INFO n_1_1:   (disk images are located at: 'frisbee:/export/orbit/image/tmp')
+ INFO prop.started: started = "true":String
+ INFO exp: - SAVE_IMAGE process started at: Sun Jul 20 23:39:49 -0400 2008
+ INFO exp:   (this may take a while, e.g. 5min+, depending of the size of your image)
+ INFO exp: - Saving process finished correctly at: Sun Jul 20 23:47:20 -0400 2008
+ INFO Experiment: DONE!
+ INFO ExecApp: Application 'commServer' finished
+ INFO run: Experiment sb1_2008_07_20_23_38_04 finished after 9:19
+ done.
+
+ }}}
+
+At the end of the ''saving'' process, you will have disk image file with the name: ''"node-1-1-2008-07-20-23-39-39.ndz"'' in the directory ''"/export/orbit/image/tmp"'' on the machine with the host name ''"frisbee"''. These information are all provided in the output displayed above.
+
+You can then:
+ * install this disk image on a set of nodes, using the instructions described in this [wiki:Tutorial/HowToImage tutorial].  
+ * only for the purpose of making a backup of your image: log into the ''"frisbee"'' machine, and copy your image to your backup storage.
+
+[[BR]]
+== Learning More ==
+
+The above disk image saving process is implemented as a ''special'' orbit experiment. As such, its execution will results in a log file as with any other orbit experiment. This log file should look like  [attachment:sb1_2008_07_20_23_38_04.log this]. 
+
+Each image created by the above saving process is a full hard-disk image, which can have arbitrary large file size (>200Mo or even more). As storage on the ''"frisbee"'' machine is limited, please be considerate in the number of images you save/use, and move any unused images to your own archival storage.
+
+The generic '''orbit''' command used above is the access point to control various ORBIT functions, such as the saving of a disk image from a node, with the sub-command "save". To see a list of all the available '''orbit''' commands, you should type ''"orbit help"''.
+
+Finally, the complete available option/commands for the ''save'' function are given by ''"orbit help save"'':
+
+ {{{
+  orbit help save
+
+
+Save a disk image from a given node into an archive file
+
+Usage:
+      orbit save [-h]
+      orbit save [NODE] [DOMAIN]
+ 
+      With: 
+      -h, --help    print this help message
+      NODE          a valid node description 
+                    (no default here, you have to enter a node!)
+ 
+      Some Examples: 
+                    orbit save [5,10]
+                    orbit save [11,2] grid
+
+ }}}