partimage.org/Partimage-manual_U … to_use_.3F
What compression level to use ?
When you save a partition into an image file, you can choose one of four compression levels:
none There is no compression
gzip Image will be compressed with gzip (default)
bzip2 Image will be compressed with bzip2
lzo Image will be compressed with lzo
With No compression you will have a very big image file, which will have the same size of the used data of your saved partition. This is really interesting only if you have a lot of space. But this is very fast, and useful if you are dealing with small images (your /boot partition perhaps)
With Gzip compression you will have a small image file. This is the most useful mode, and the default setting. This operation takes more time due to the compression, but it creates a much smaller file.
With Bzip2 compression you will have a very small image file: Bzip2 has a better compression ratio than gzip on big files (though in some rare cases, it can actually create a bigger archive files). This will be very very slow to compress. This option is useful only if you really can’t waste any space, or if you have a lot of time (you can run it before going to bed).
With Lzo compression this is a very fast compression algorithm. It’s a lot faster than gzip, but a little less efficient. Choose this option if you have enough space to save a big image, and you want to save time. This compression level is available for version 0.7.0 of partimage and later.
You can compress and uncompress image files, after creation. For example, if the image redhat-6.2.partimg.gz was made with the gzip compression level, you can type gzip -d redhat-6.2.partimg.gz to uncompress the image file. You can also compress an image which was not compressed. For example, you can type bzip2 debian-2.2.partimg. This may be usful if you wish to experiment with other compression utilities. Partition Image will be able to read uncompressed files, or those created using a supported compression routine even though the software itself was not used for the compression. It is really recommended to use compression as it will be reduce the image file size quite a lot which can be very useful if you plan to store it on either removable medias or save them online through a dedicated web server. [/quote]
Partimage est censé supporter gzip,bzip2 et lzo. Décompresser hors de partimage ne devrait pas s’imposer dans le cadre d’une restauration sans problèmes. Je te suggère de les décompresser hors de partimage pour éliminer une mauvaise décompression par partimage de la liste des causes d’erreurs potentielles.
Ne décompresse que la première archive *.000 pour voir si la restauration plante dès *.000 ou à partir de la première archive compressée *.001.