Set up Logical Volume Manager in Linux
LVM, or Logical Volume Manager, is a mechanism to create virtual drives out of physical drives. These virtual (or logical) drives can then be manipulated in interesting ways: they can be grown or shrunk, and they can span more than one physical disk. An LVM in and of itself is exciting because it allows you to turn a number of disks into one massive volume, but it becomes even more interesting when throwing RAID into the mix. Using LVM with a RAID-1 mirroring system provides large devices with redundancy. This is important because if one drive in an LVM volume set dies, it could leave your data in an inconsistent (or entirely gone) state. Using LVM over RAID is really no different than using LVM on a physical disk; the difference is instead of adding physical volumes to your LVM set, you would add md devices: using /dev/md0 rather than /dev/hda1.
To begin, creating an LVM set from physical disks is quite easy. The following commands will get you started. This also assumes using a fairly recent Linux kernel; most distributions have LVM available for install.
- Login or register to post comments
- Printer-friendly version
- 2520 reads
- PDF version
More in Tux Machines
- Highlights
- Front Page
- Latest Headlines
- Archive
- Recent comments
- All-Time Popular Stories
- Hot Topics
- New Members
digiKam 7.7.0 is releasedAfter three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. |
Dilution and Misuse of the "Linux" Brand
|
Samsung, Red Hat to Work on Linux Drivers for Future TechThe metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. |
today's howtos
|
Recent comments
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago