Les Mikesell wrote:
Clonezilla-live is a boot-from CD linux that will copy just the used portions of the disk and can save to another disk or image files on local disks or over the network. I'd recommend it over dd, but maybe someone has a way to do LVM snapshots so the copy can be done without a reboot.
i've generally used dump(8) and restore(8) to image ext2/3FS.... this can even be used to do an incremental dump although I rarely do that.
while i've never tried this, in theory, if you're using LVM, you can snapshot a live filesystem, then dump the unmounted snapshot to get a clean image. note that snapshotting a database is a somewhat dicey proposition, however. I generally prefer to use the databases own dump facility rather than backing up its raw tablespace files (pg_dumpall for postgres, etc).
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