diff options
| author | Wenchao Xia <xiawenc@linux.vnet.ibm.com> | 2013-12-04 17:10:55 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-12-04 15:19:00 +0100 |
| commit | 8c116b0e4141400f8d43a7e6dac8ff3adcc8aadd (patch) | |
| tree | 758e8c14c3f45d51d1561d5bb5d2c72b7a35f0f7 /qemu-nbd.texi | |
| parent | 7b4c4781e390a041fa0ef70817678f1b97fc6db6 (diff) | |
qemu-nbd: support internal snapshot export
Now it is possible to directly export an internal snapshot, which
can be used to probe the snapshot's contents without qemu-img
convert.
Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'qemu-nbd.texi')
| -rw-r--r-- | qemu-nbd.texi | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/qemu-nbd.texi b/qemu-nbd.texi index 6055ec693b..5b55f769ac 100644 --- a/qemu-nbd.texi +++ b/qemu-nbd.texi @@ -27,7 +27,13 @@ Export QEMU disk image using NBD protocol. @item -P, --partition=@var{num} only expose partition @var{num} @item -s, --snapshot - use snapshot file + use @var{filename} as an external snapshot, create a temporary + file with backing_file=@var{filename}, redirect the write to + the temporary one +@item -l, --load-snapshot=@var{snapshot_param} + load an internal snapshot inside @var{filename} and export it + as an read-only device, @var{snapshot_param} format is + 'snapshot.id=[ID],snapshot.name=[NAME]' or '[ID_OR_NAME]' @item -n, --nocache @itemx --cache=@var{cache} set cache mode to be used with the file. See the documentation of |