Mailinglist Archive: opensuse (963 mails)

[Anton Aylward <anton.aylward@xxxxxxxxxx>]

David C. Rankin said the following on 04/09/2011 04:33 PM:
>    KISS - is the best philosophy. Use only the number that you need. 

And that's the wonderful thing about LVM.
If I need to compile a package I can create /usr/src and give that space
back when I'm finished then next week use that same space as /data to do
some analytics ...or to take a snapshot of other partitions in turn for
backup.

See how simple this last function can be at
http://tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html

More detail at
http://www.howtoforge.com/linux_lvm_snapshots
<quote>
An LVM snapshot is an exact copy of an LVM partition that has all the
data from the LVM volume from the time the snapshot was created. The big
advantage of LVM snapshots is that they can be used to greatly reduce
the amount of time that your services/databases are down during backups
because a snapshot is usually created in fractions of a second. After
the snapshot has been created, you can back up the snapshot while your
services and databases are in normal operation.
</quote>

Applied to backing up a MySQL database
http://blog.dbadojo.com/2007/09/mysql-backups-using-lvm-snapshots.html

Of course you can also create LVM groups dynamcially with loopback
http://www.howtoforge.com/creating-portable-disksafes-with-loopbackfs-and-lvm-snapshots





-- 
Wisdom is earned through bitter experience.
Idiocy comes easily.
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