update
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2100 c046a42c-6fe2-441c-8c8c-71466251a162
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@ -949,7 +949,7 @@ format. Normally this device is the first virtual hard drive.
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Use the monitor command @code{savevm} to create a new VM snapshot or
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replace an existing one. A human readable name can be assigned to each
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snapshots in addition to its numerical ID.
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snapshot in addition to its numerical ID.
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Use @code{loadvm} to restore a VM snapshot and @code{delvm} to remove
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a VM snapshot. @code{info snapshots} lists the available snapshots
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@ -972,8 +972,8 @@ and writable block device. The disk image snapshots are stored in
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every disk image. The size of a snapshot in a disk image is difficult
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to evaluate and is not shown by @code{info snapshots} because the
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associated disk sectors are shared among all the snapshots to save
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disk space (otherwise each snapshot would have to copy the full disk
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images).
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disk space (otherwise each snapshot would need a full copy of all the
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disk images).
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When using the (unrelated) @code{-snapshot} option
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(@ref{disk_images_snapshot_mode}), you can always make VM snapshots,
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@ -29,16 +29,19 @@ is the disk image format. It is guessed automatically in most cases. The followi
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@item raw
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Raw disk image format (default). This format has the advantage of
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being simple and easily exportable to all other emulators. If your file
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system supports @emph{holes} (for example in ext2 or ext3 on Linux),
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then only the written sectors will reserve space. Use @code{qemu-img
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info} to know the real size used by the image or @code{ls -ls} on
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Unix/Linux.
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being simple and easily exportable to all other emulators. If your
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file system supports @emph{holes} (for example in ext2 or ext3 on
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Linux or NTFS on Windows), then only the written sectors will reserve
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space. Use @code{qemu-img info} to know the real size used by the
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image or @code{ls -ls} on Unix/Linux.
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@item qcow
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@item qcow2
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QEMU image format, the most versatile format. Use it to have smaller
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images (useful if your filesystem does not supports holes, for example
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on Windows), optional AES encryption and zlib based compression.
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on Windows), optional AES encryption, zlib based compression and
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support of multiple VM snapshots.
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@item qcow
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Old QEMU image format. Left for compatibility.
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@item cow
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User Mode Linux Copy On Write image format. Used to be the only growable
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image format in QEMU. It is supported only for compatibility with
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@ -104,7 +107,8 @@ are detected and suppressed from the destination image.
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Give information about the disk image @var{filename}. Use it in
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particular to know the size reserved on disk which can be different
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from the displayed size.
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from the displayed size. If VM snapshots are stored in the disk image,
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they are displayed too.
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@end table
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@c man end
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