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	Logical volume management - Wikipedia, the free encyclopedia
		In computer storage, logical volume management or LVM is a method of allocating space on mass storage devices that is more flexible than conventional partitioning schemes.
		In particular, a volume manager can concatenate, stripe together or otherwise combine partitions into larger virtual ones that can be resized or moved, possibly while it is being used.
		Volume management is a form of virtualization because it turns storage into a more easily allocatable and fluid resource.
	en.wikipedia.org /wiki/Logical_volume_management (588 words)

	Logical Volume Managers (Site not responding. Last check: 2007-10-27)
		Logical volume management is a relatively new approach to UNIX disks and filesystems.
		A logical volume is made into a filesystem, or may be used as a swap device, a boot device, and so on.
		Logical volumes may be any size that is a multiple of the size of a physical partition within a given volume group.
	www.uwsg.iu.edu /usail/peripherals/disks/logical (371 words)

	Logical Volume Manager (Linux) - Wikipedia, the free encyclopedia
		LVM is an implementation of a logical volume manager for the Linux kernel.
		It was originally written in 1998 by Heinz Mauelshagen, who based its design on that of the LVM in HP-UX.
		LVM does not implement RAID1 or RAID5 mirroring of LVs.
	en.wikipedia.org /wiki/Logical_Volume_Manager_(Linux) (128 words)

	[No title]
		Logical volume management provides a higher-level view of the disk storage on a computer system than the traditional view of disks and partitions.
		Logical volume management is traditionally associated with large installations containing many disks but it is equally suited to small systems with a single disk or maybe two.
		logical extent 1 could map onto physical extent 51 of PV1, data written to the first 4 MB of the logical volume in fact be written to the 51st extent of PV1.
	www.linux-es.org /docs/HOWTO/LVM-HOWTO (7236 words)

	The Logical Volume Manager (LVM) - Part 1
		For example, if logical storage is moved to a different physical location, only the node performing the operation is aware of it while all others are not aware of it and continue using the old location.
		When an application now wants to access storage on a logical volume, the LE this space is in is identified and by using the unique ID number of the LE in the LV both the PV and the PE are found in the mapping table.
		LVM is one more tool to achieve high availability, and you have to use many of them together like RAID on the disk level, LVM for all storage management, HA software (heartbeat and application monitoring), and a backup strategy.
	www.suse.com /en/whitepapers/lvm/lvm1.html (2763 words)

	Common threads: Learning Linux LVM, Part 1 (Site not responding. Last check: 2007-10-27)
		However, unlike physical volumes, the logical volumes can be expanded 0and shrunk while the system is still running, providing Linux system administrators with the storage flexibility that they've until now only dreamed of.
		Creating an LVM logical volume is really easy, and once it's created we can go ahead and put a filesystem on it, mount it, and start using the volume to store our files.
		To create a logical volume, we use the "lvcreate" command, specifying the name of our new volume, the size we'd like the volume to be, and the volume group that we'd like this particluar logical volume to be part of.
	www-106.ibm.com /developerworks/linux/library/l-lvm (2194 words)

	redhat.com \| The Linux Logical Volume Manager
		Logical volume management is a widely-used technique for deploying logical rather than physical storage.
		Logical volumes can be resized while they are mounted and accessible by the database or file system, removing the downtime associated with adding or deleting storage from a Linux server
		Logical volume snapshots can be created to represent the exact state of the volume at a certain point-in-time, allowing accurate backups to proceed simultaneously with regular system operation
	www.redhat.com /magazine/009jul05/features/lvm2 (1385 words)

	Logical Volume Management
		A volume manager is a software tool that helps a system administrator manage their storage resources.
		In many environments, the volume manager is also used to create striped volume sets.
		When using a volume manager it is important to use naming conventions to help manage the hierarchy of devices.
	www.oracle.com /ecostructure/blueprint_rec/rec_design_configuration_options_logical_volumes_naming_conventions.htm (185 words)

	Using Logical Volume Management (Site not responding. Last check: 2007-10-27)
		The main benefit you may see with LVM is when you run out of space in a filesystem (/home, for example), you can either resize the filesystems on the fly, or add another hard drive and spread /home across the two drives.
		LVM can use your partitions, and combine them together in one large storage pool (called a volume group).
		From that volume group (VG), you create logical volumes (LV), which is like a partition, from which you create the filesystems.
	www.linuxjournal.com /node/5957/print (823 words)

	Unix/Linux Administration - Logical Volume Management Guide
		Without LVM, you must either have a spare 500 MB on the same physical disk or the entire filesystem must be moved to another (larger) disk.
		LVM can't tell if two PVs are on the same physical disk or not, so if you create a multiple PVs per disk and then create striped LVs, the stripes could be on different partitions on the same disk.
		The tables will use one logical volume called "tables" on one disk and the indexes and control files will be on a second LV called "indexes" on the other disk.
	www.hccfl.edu /pollock/AUnix1/LVM.htm (5388 words)

	Linux Logical Volume Management (LVM) - BeezNest
		LVM [1] is a great system to resize filesystems and partitions online [2], do online snapshots of the filesystems, span filesystems and partitions on multiple drives.
		Volume Group is a "container" that holds physical disks and logical volumes.
		Logical Volume is a part of a volume group.
	glasnost.beeznest.org /articles/99 (307 words)

	NOVELL: Cool Solutions: What Is Logical Volume Management?
		Logical Volume Management allows single or multiple hard drives to be grouped together into a single "volume group" that can be easily expanded.
		If that is confusing, just think of the volume group as your hard drive, and the logical volumes as your partitions.
		Using the previous set-up, I opened the LVM console and noticed that I have 3.5 gigabytes being un-used.
	www.novell.com /coolsolutions/feature/14735.html (955 words)

	Managing System Storage Areas - DMC HP-UX System Administrators Guide
		Under LVM, physical device layout is isolated from file system structure by assigning from one to as many as 32 physical devices (e.g., disk drives) to a logical device called a Volume Group.
		Under LVM this is done by creating a Logical Volume of an appropriate size for each project’s aggregate disk space requirement, creating a file system on that Logical Volume, and mounting the file system on the project’s base directory.
		Management of an array is conducted through the ARMServer process which is the server portion of the Hewlett-Packard Advanced Disk Array management software.
	www.tunza.com /books/hpux/storage1.html (6540 words)

	IBM Redbooks \| Configuring Logical Volume Management (LVM) on Linux for zSeries
		Without a volume management system, this limits the size of a file system on Linux for zSeries to the size of a DASD volume.
		Volume management systems allow multiple DASD devices to be combined into a single Linux file system (and thereby overcome the single DASD volume size limit).
		After the logical volume is created, a file system can be installed on it.
	publib-b.boulder.ibm.com /Redbooks.nsf/RedbookAbstracts/tips0128.html (674 words)

	Mastering the Enterprise Volume Management System - OSNews.com
		The Enterprise Volume Management System, or EVMS, is a disk, partition, and file system manager for Linux that claims to be a comprehensive tool for all disk management tasks.
		EVMS automatically coordinates file system operations with other disk and volume management tasks, for example by expanding or shrinking a file system at the right time when a disk volume is expanded or shrunk.
		Logical volume management: You can place your disks or partitions into a storage pool (called a volume group in LVM, or a container in EVMS), and then export logical disk volumes that draw from the pool.
	www.osnews.com /story.php?news_id=10288 (1093 words)

	Logical Volume Management 2 - LinuxQuestions.org
		You can direct the creation of a logical volume to one or more partitions/physical volumes in a volume group, thus giving you the ability to keep it on a single disk when the volume group is spread across two drives.
		For instance, if you were using the system as an Apache server, placing the logical volume containing /var on one drive and placing the logical volume containing /usr on the other drive will probably give you a significant speed boost when compared to them sharing the same drive.
		Back to your comment about LVMs on smaller systems, two advantages of LVMs on small systems are (1) the ability to easily resize logical volumes to accommodate changing needs and (2) the ability to “hot” backup the system without unmounting the filesystem by using a logical volume snapshot.
	www.linuxquestions.org /questions/showthread.php?threadid=355005 (881 words)

	Using Logical Volume Management \| Linux Journal (Site not responding. Last check: 2007-10-27)
		Logical Volume Management (LVM) is an abstraction layer over the hard drives, which allows the Linux kernel to access the filesystems normally, yet each filesystem may be comprised of multiple hard drives.
		The LVM HOWTO descibes a classic scenario like this one that illustrates exactly why LVM is an excellent tool.
		I installed the new hard drive, set its partition type to LVM (the whitepaper says this is not necessary for LVM, but old habits die hard, and I did this before reading the whitepaper), and added it to the VG.
	www.linuxjournal.com /article.php?sid=5957 (922 words)

	DreamWorks gets creative with Linux logical volume management - Computerworld
		LVM provides a virtualization layer that makes it possible to allocate logical volumes across multiple physical storage devices.
		"LVM in particular is necessary for any host platform that wants to be in the data center, because you have a lot of different data types and file types, and you need to mask that complexity when you allocate volumes," Webster adds.
		Sistina LVM 2.0, which will be built into the upcoming Version 2.5 of the Linux kernel, provides a cluster-aware standard interface, which forms the basis for managing volumes on a clusterwide basis, Ruiz explains.
	www.computerworld.com /printthis/2003/0,4814,85014,00.html (1393 words)

	Volume Management (Site not responding. Last check: 2007-10-27)
		Logical Volume Manager (LVM) is an additional layer of abstraction that allows a system administrator to collect physical devices (i.e.
		The most popular benefit of LVM is the ability to move space from one logical volume to another logical volume in the same volume group.
		Size is variable, but the same throughout all physical volumes of a volume group(perhaps the physical extent size should correspond to block size).
	www.cise.ufl.edu /~mfoster/classes/lvm/lvm.htm (1308 words)

	Logical Volume Management - OptionC (Site not responding. Last check: 2007-10-27)
		LVM allows for more flexibility in disk storage than normal disk partitioning.
		Administrators can resize volumes, rearrange and move them, manage volumes in user-defined groups and label them with names that are easier for human consumption.
		In addition, volumes can be spread over multiple physical devices allowing for quicker, easier and less expensive growth of storage.
	www.option-c.com /xwiki/Logical_Volume_Management (385 words)

	A Walkthrough of the LVM for Linux (Site not responding. Last check: 2007-10-27)
		Logical Volume Management is a fundamental way to manage UNIX storage systems in a scalable, forward-thinking manner.
		A Volume Group must be contain at least one entire physical volume, but other volumes may be added and removed in real-time as needed.
		Since LVM requires entire Physical Volumes to be assigned to Volume Groups, you must have a few empty partitions ready to be used by LVM.
	www.gweep.net /~sfoskett/linux/lvmlinux.html (1302 words)

	NOVELL: Behind the Box: SUSE LINUX Revolutionizes Volume Management Software
		With the LVM, it is possible to run and administrate a Volume Group and Logical Volumes while running Linux.
		The LVM enables logical storage to move to a different physical location, adding storage space to already existing Logical Volume(s) without any downtime of the system.
		As the LVM configuration is stored on the physical volumes managed by LVM itself, the system is independent of physical device IDs.
	www.novell.com /news/press/archive/2001/suse_archive/LVM.html (508 words)

	What is LVM? (Site not responding. Last check: 2007-10-27)
		LVM is a Logical Volume Manager for the Linux operating system.
		LVM 1 is a mature product that has been considered stable for a couple of years.
		The kernel driver for LVM 1 is included in the 2.4 series kernels, but this does not mean that your 2.4.x kernel is up to date with the latest version of LVM.
	www.tldp.org /HOWTO/LVM-HOWTO/whatislvm.html (166 words)

	Some concerns about IBMs LVMS for Linux
		LVMS does have some convenient features, such as journaling filesystems, encryption, and extendable filesystems.
		IBM's LVMS, however, adds a significantly more complexity between the filesystem and the physical devices, and results in an environment that is both more difficult to understand and harder to precisely control.
		LVMS is a complex piece of software doing a very sensitive job.
	librenix.com /?inode=42 (690 words)

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