Felipe Alfaro Solana wrote:
On 10 Feb 2005, at 19:26, Arthur Pemberton wrote:
LVM is setup by default on fc3 and RHEL4 when it is released. its a
better idea in the long term
I've done some reading, but I honestly can't see what makes it such a
better idea. I'm guessing I just haven't happened upon a situation
where I wished i had it.
Got any practical scenarios, just out of curiousity.
LVM2 snapshots allow you to backup live filesystems. Usually, you
shouldn't backup a live (i.e. mounted and being used) filesystem with
utilities like "tar" and company, since they can't lock files being
backed up to avoid changes made by running processes.
A LVM2 snapshot, however, guarantees consistency as it "takes an
image" of the filesystem and freezes it which can be backed up to
tape, or to remote storage without worrying about possible
inconsistencies caused by running processed modifying data.
That seems very good, where can I find more information about this? Or
what should I google for exactly?
