Compression?

[Mark Duffy]

I want to use make_net_recovery to store on a newly setup Ignite server. vg00 of the server I want to make an image of is 8Gb is size currently using 5848MB. What size will the make_net_recovery to be stored be? What sort of compression does Ignite use?

Any info appreciated.

[Lasse Knudsen · Accepted solution]

Ignite uses (standard) gzip.

How much space you need depends on what data you have.

Text files can be compressed as much as 90% - binary files usually 40% compressed files/jpg/mpg is not compressable at all. 40% is a good overall estimate.

[Lasse Knudsen]

Ups the calcution:

5848 - 40% = 3508MB

[Vincente Fernandes]

Ignite used dd for creating the make_recovery. The size will depend up what directory/data is included in the make_net_recovery process. It shouldn't take more then 5848MB assuming you want to include everything of vg00.

[Kofi ARTHIABAH]

If you do not use the -A option , make_recovery will back up only the OS component of vg00 - that comes to approximately 400MB. If you use the -A option with make_recovery, then it will back up all the data on vg00.

I would suggest that in your case you use make_recovery (without the -A option) and then backup using fbackup for the rest of the data.