257 lines
4.4 KiB
HTML
257 lines
4.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Anatomy of LVM</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="LVM HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="Benefits of Logical Volume Management on a Large System"
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HREF="benefitsoflvmlarge.html"><LINK
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REL="NEXT"
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TITLE="volume group (VG)"
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HREF="vg.html"></HEAD
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><BODY
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CLASS="chapter"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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VLINK="#840084"
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COLSPAN="3"
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>LVM HOWTO</TH
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WIDTH="10%"
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HREF="benefitsoflvmlarge.html"
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>Prev</A
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="chapter"
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><H1
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><A
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NAME="anatomy"
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></A
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>Chapter 3. Anatomy of LVM</H1
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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>3.1. <A
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HREF="vg.html"
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>volume group (VG)</A
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></DT
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><DT
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>3.2. <A
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HREF="pv.html"
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>physical volume (PV)</A
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></DT
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><DT
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>3.3. <A
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HREF="lv.html"
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>logical volume (LV)</A
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></DT
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><DT
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>3.4. <A
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HREF="pe.html"
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>physical extent (PE)</A
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></DT
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><DT
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>3.5. <A
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HREF="le.html"
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>logical extent (LE)</A
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></DT
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><DT
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>3.6. <A
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HREF="tyingittogether.html"
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>Tying it all together</A
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></DT
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><DT
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>3.7. <A
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HREF="mapmode.html"
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>mapping modes (linear/striped)</A
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></DT
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><DT
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>3.8. <A
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HREF="snapshotintro.html"
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>Snapshots</A
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></DT
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></DL
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></DIV
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><P
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> This diagram gives a overview of the main elements in an LVM system:
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="screen"
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> +-- Volume Group --------------------------------+
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| |
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| +----------------------------------------+ |
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| PV | PE | PE | PE | PE | PE | PE | PE | PE | |
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| +----------------------------------------+ |
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| . . . . |
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| . . . . |
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| +----------------------------------------+ |
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| LV | LE | LE | LE | LE | LE | LE | LE | LE | |
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| +----------------------------------------+ |
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| . . . . |
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| . . . . |
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| +----------------------------------------+ |
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| PV | PE | PE | PE | PE | PE | PE | PE | PE | |
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| +----------------------------------------+ |
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| |
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+------------------------------------------------+
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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><P
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> Another way to look at is this (courtesy of
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<A
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HREF="mailto:erik@bagfors.nu_NOSPAM"
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TARGET="_top"
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>Erik B<>gfors</A
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>
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on the linux-lvm mailing list):
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="screen"
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> hda1 hdc1 (PV:s on partitions or whole disks)
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\ /
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\ /
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diskvg (VG)
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/ | \
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/ | \
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usrlv rootlv varlv (LV:s)
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| | |
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ext2 reiserfs xfs (filesystems)
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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||
HREF="benefitsoflvmlarge.html"
|
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="vg.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
|
||
><TR
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||
><TD
|
||
WIDTH="33%"
|
||
ALIGN="left"
|
||
VALIGN="top"
|
||
>Benefits of Logical Volume Management on a Large System</TD
|
||
><TD
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||
WIDTH="34%"
|
||
ALIGN="center"
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||
VALIGN="top"
|
||
> </TD
|
||
><TD
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||
WIDTH="33%"
|
||
ALIGN="right"
|
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VALIGN="top"
|
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>volume group (VG)</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |