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>Chapter 16. Expanding and shrinking volumes</TD
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NAME="mkfs"
></A
>16.3. Example: expand a volume</H1
><P
>This section tells how to expand a volume a compatibility volume by 500 MB.</P
><A
NAME="AEN3296"
></A
><BLOCKQUOTE
CLASS="BLOCKQUOTE"
><DIV
CLASS="example"
><A
NAME="AEN3297"
></A
><P
><B
>Example 16-2. Expand a volume</B
></P
><P
>Expand the volume <TT
CLASS="filename"
>/dev/evms/lvm/Sample Container/Sample Region</TT
>, which is the compatibility volume that was created in the chapter entitled "Creating Volumes," by 500 MB.
</P
></DIV
></BLOCKQUOTE
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="expandgui"
></A
>16.3.1. Using the EVMS GUI</H2
><P
>Follow these steps to expand the volume with the EVMS GUI:
<P
></P
><OL
TYPE="1"
><LI
><P
>Select
<SPAN
CLASS="guimenu"
>Actions</SPAN
>-&gt;<SPAN
CLASS="guimenuitem"
>Expand</SPAN
>-&gt;<SPAN
CLASS="guimenuitem"
>Volume...</SPAN
>
</P
></LI
><LI
><P
>Select
<SPAN
CLASS="guimenu"
>/dev/evms/lvm/Sample Container/Sample Region</SPAN
>
from the list of volumes.
</P
></LI
><LI
><P
>Click <SPAN
CLASS="guibutton"
>Next</SPAN
>.
</P
></LI
><LI
><P
>Select <SPAN
CLASS="guimenu"
>lvm/Sample Container/Sample Region</SPAN
> from the list as the expand point.
</P
></LI
><LI
><P
>Click <SPAN
CLASS="guibutton"
>Next</SPAN
>.
</P
></LI
><LI
><P
>Enter <TT
CLASS="userinput"
><B
>500MB</B
></TT
> in the "Additional Size" field.</P
></LI
><LI
><P
>Click <SPAN
CLASS="guibutton"
>Expand.</SPAN
></P
></LI
></OL
>
</P
><P
>Alternatively, you can perform some of the steps to expand the volume with the GUI
context sensitive menu:</P
><P
></P
><OL
TYPE="1"
><LI
><P
>From the <SPAN
CLASS="guimenuitem"
>Volumes</SPAN
> tab, right click
<TT
CLASS="filename"
>/dev/evms/lvm/Sample Container/Sample Region</TT
>.</P
></LI
><LI
><P
>Click <SPAN
CLASS="guimenuitem"
>Expand...</SPAN
></P
></LI
><LI
><P
>Continue the operation to expand the volume beginning with step 3
of the GUI instructions.</P
></LI
></OL
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="expandncurses"
></A
>16.3.2. Using Ncurses</H2
><P
>Follow these steps to expand a volume with Ncurses:
<P
></P
><OL
TYPE="1"
><LI
><P
>Select <SPAN
CLASS="guimenu"
>Actions</SPAN
>-&gt;<SPAN
CLASS="guimenuitem"
>Expand</SPAN
>-&gt;<SPAN
CLASS="guimenuitem"
>Volume</SPAN
>.
</P
></LI
><LI
><P
>Select
<SPAN
CLASS="guimenuitem"
>/dev/evms/lvm/Sample Container/Sample Region</SPAN
> from the
list of volumes.
</P
></LI
><LI
><P
>Activate <SPAN
CLASS="guibutton"
>Next</SPAN
>.
</P
></LI
><LI
><P
>Select <SPAN
CLASS="guimenuitem"
>lvm/Sample Container/Sample Region</SPAN
> from
the list of expand points.
</P
></LI
><LI
><P
>Activate <SPAN
CLASS="guibutton"
>Next</SPAN
>.</P
></LI
><LI
><P
>Press <B
CLASS="keycap"
>spacebar</B
> on the <SPAN
CLASS="guimenuitem"
>Additional Size</SPAN
> field.
</P
></LI
><LI
><P
>At the "::" prompt enter <TT
CLASS="userinput"
><B
>500MB</B
></TT
>.
</P
></LI
><LI
><P
>Press <B
CLASS="keycap"
>Enter</B
>.
</P
></LI
><LI
><P
>Activate <SPAN
CLASS="guibutton"
>Expand</SPAN
>.
</P
></LI
></OL
>
</P
><P
>Alternatively, you can perform some of the steps to shrink the volume with the
context sensitive menu:</P
><P
></P
><OL
TYPE="1"
><LI
><P
>From the Volumes view, press <B
CLASS="keycap"
>Enter</B
> on /<SPAN
CLASS="guimenuitem"
>dev/evms/lvm/Sample Container/Sample Region</SPAN
>.</P
></LI
><LI
><P
>Activate the <SPAN
CLASS="guimenuitem"
>Expand</SPAN
> menu item.</P
></LI
><LI
><P
>Continue the operation beginning with step 3 of the Ncurses instructions.</P
></LI
></OL
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="expandcli"
></A
>16.3.3. Using the CLI</H2
><P
>The <B
CLASS="command"
>expand</B
> command takes an expand point followed by an optional name
value pair and an expandable object. To find the expand point, use the <B
CLASS="command"
>query</B
> command with the Expand Points filter on the object or volume you plan to expand. For example:</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
>query: expand points, "/dev/evms/lvm/Sample Container/Sample Region"</PRE
></FONT
></TD
></TR
></TABLE
><P
>Use a list options filter on the object of the expand point to determine the name-value pair to use, as follows:</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
>query: objects, object="lvm/Sample Container/Sample Region", list options</PRE
></FONT
></TD
></TR
></TABLE
><P
>The free space in your container is the container name plus <TT
CLASS="filename"
>/Freespace</TT
>.</P
><P
>With the option information that is returned, you can construct the command, as follows:</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
>expand: "lvm/Sample Container/Sample Region", add_size=500MB,
"lvm/Sample Container/Freespace"</PRE
></FONT
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