I'm looking for something (ideally) in the CentOS repo that lets me easily take and restore snapshots of my system while powered on (similar to how later versions of Norton Ghost work). Is LVM my best bet to do this?
(I hate to admit this, but up to this point when I've been in a pinch, I've just powered the box down on off hours and then imaged it via some sort of live cd)
On Fri, 23 Nov 2007 09:38:00 -0800 Rogelio scubacuda@gmail.com wrote:
I'm looking for something (ideally) in the CentOS repo that lets me easily take and restore snapshots of my system while powered on (similar to how later versions of Norton Ghost work). Is LVM my best bet to do this?
What about dd?
On 11/23/07, Frank Cox theatre@sasktel.net wrote:
I'm looking for something (ideally) in the CentOS repo that lets me
easily
take and restore snapshots of my system while powered on (similar to how later versions of Norton Ghost work). Is LVM my best bet to do this?
What about dd?
But won't that mean that I dd the *entire* hard drive, and not just that which has changed? (Or maybe dd has some options in this department that I haven't used?)
On Fri, 23 Nov 2007 09:44:12 -0800 Rogelio scubacuda@gmail.com wrote:
But won't that mean that I dd the *entire* hard drive, and not just that which has changed?
That's what a snapshot is.
If what you want is not a snapshot but something else instead, then dd is probably not the best tool for the job. You could probably run a diff between the previous image and the current image, but I'm sure there is a better way.
more info about what dd can do herehttp://www.linuxquestions.org/linux/answers/Applications_GUI_Multimedia/How_To_Do_Eveything_With_DD
On Nov 23, 2007 11:54 AM, Frank Cox theatre@sasktel.net wrote:
On Fri, 23 Nov 2007 09:44:12 -0800 Rogelio scubacuda@gmail.com wrote:
But won't that mean that I dd the *entire* hard drive, and not just that which has changed?
That's what a snapshot is.
If what you want is not a snapshot but something else instead, then dd is probably not the best tool for the job. You could probably run a diff between the previous image and the current image, but I'm sure there is a better way.
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On 11/23/07, Victor Padro vpadro@gmail.com wrote:
more info about what dd can do herehttp://www.linuxquestions.org/linux/answers/Applications_GUI_Multimedia/How_To_Do_Eveything_With_DD
Thank you Victor. That gives me some ideas, actually.
On Nov 23, 2007 8:36 PM, Rogelio scubacuda@gmail.com wrote:
On 11/23/07, Victor Padro vpadro@gmail.com wrote:
more info about what dd can do here
Thank you Victor. That gives me some ideas, actually.
If you are concerned about space, xdelta can help to generate the diff between 2 snapshots
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Rogelio wrote:
On 11/23/07, Victor Padro vpadro@gmail.com wrote:
more info about what dd can do herehttp://www.linuxquestions.org/linux/answers/Applications_GUI_Multimedia/How_To_Do_Eveything_With_DD
Thank you Victor. That gives me some ideas, actually.
If you want something like traditional backups but that doesn't take so much space for the storage, look at backuppc (http://backuppc.sourceforge.net/).
If you want image backups that don't take the time or space to copy the unused disk space, look at clonezilla live: http://clonezilla.sourceforge.net/clonezilla-live/.
Les Mikesell wrote:
Rogelio wrote:
On 11/23/07, Victor Padro vpadro@gmail.com wrote:
more info about what dd can do herehttp://www.linuxquestions.org/linux/answers/Applications_GUI_Multimedia/How_To_Do_Eveything_With_DD
Thank you Victor. That gives me some ideas, actually.
If you want something like traditional backups but that doesn't take so much space for the storage, look at backuppc (http://backuppc.sourceforge.net/).
If you want image backups that don't take the time or space to copy the unused disk space, look at clonezilla live: http://clonezilla.sourceforge.net/clonezilla-live/.
G4L is also a good tool. http://sourceforge.net/projects/g4l
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Alain Spineux -
Frank Cox -
Konstantinos Pachnis -
Les Mikesell -
Rogelio -
Victor Padro