September 2014
Intermediate to advanced
298 pages
6h 13m
English
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LVM
Logical volume manager (LVM) allows you to create a quick snapshot that can be used for backups. Apart from that, you can perform migration with easy rollback. This is a little bit out of the scope of this chapter, but as it is quick and could be very useful, we'll discuss it.
LVM is not a MariaDB tool, but a device mapper solution providing snapshot solutions. If you're using advanced filesystems such as ZFS or BTRFS, you can also use the snapshot feature to create backups.
Snapshot
To make a usable MariaDB datadir snapshot, you first need to lock your tables:
MariaDB [(none)]> flush tables with read lock;
Now we're sure there will be no changes on our instance. Let's create the snapshot on the system:
> lvcreate --snapshot -n snap_mariadb ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.