Systemback

Live system creation is aborted: an error occurred while creating container file

Asked by rv_happy

Hi

Thanks for the software. Just recently I have had problems creating live CDs. The message is:

"Live system creation is aborted.
An error occurred while creating the container file."

Terminal output shows:
An error occurred while executing the following command:

  tar -cf /home/chromixium-live.sblive -C /home/.sblivesystemcreate .

 Exit code: 2

I am running this in VirtualBox in case that is relevant on Ubuntu 14.04.01 32 bit.

I've recently updated to the most recent version of Systemback 1.5.101~ubuntu14.04.1

I'd be grateful if you could point me in the right direction to get this great tool working again.
Regards
rv_happy

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Kendek (nemh) said : 		#1

The tar documentation say that the exit code 2 is a "fatal error". This means that some fatal, unrecoverable error occurred.
The tar utility is not part of the Systemback, so I don't know what is the problem exactly. Is tar not printed any error message? And is this problem persists? Please try again the Live image creation.
I have not changed the Live create algorithm for some time now. So probably not the program update causes this problem.

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rv_happy (iainrj) said : 		#2

Hi Kendek

Thanks for replying so quickly. To test the theory that there is a problem with tar on my system, I did a full filesystem backup:
tar -cvpzf backup.tar.gz --exclude=/backup.tar.gz --one-file-system /

It completed successfully.

I kept a file window open file creating the live system to see what Systemback was doing. I see that you create a working directory and create the livecd.squashfs file on the fly and then wrap it up with the tar command. I wonder if I am out of disk space..? I'm going to increase the virtual HDD file and let you know how I get on.

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rv_happy (iainrj) said : 		#3

Sorry still failed. Failed on step 3 of 3 at about 34%.

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Kendek (nemh) said : 		#4

This is not just a theory, the problem source is the tar. If the process is failed at 34%, the tar handles the big (1-2-3-4-5... GB) filesystem.squashfs file. Systemback just reading the process exit code, and if it is greater than 0, then gives an error message.
But Systemback checking the free space on the disk after the errors, and if not enough free space, then in that case you will receive the following error message (on GUI):
"The Live system creation is aborted!
Not enough free disk space to complete the process."
So there is an other problem, maybe I/O error or I don't know... In any case, I have not encountered similar problems.

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Kendek (nemh) said : 		#5

I tested the Live creation on Lubuntu 14.04.2 32-bit in VirtualBox. The 'chromixium-live.sblive' and 'chromixium-live.iso' files are created successfully, without any problems. So technically I see no bug in the Systemback what could cause this.
So if you trying the Live creation on the other machine, the problem persists?

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rv_happy (iainrj) said : 		#6

Sorry for not replying sooner. I am not in a position to try it on another installation right now. I can only assume that I did something weird to my system that caused this error. If I test it again in future and the problem persists I'll let you know. Thanks for your quick responses.

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Launchpad Janitor (janitor) said : 		#7

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.