virt-tar(1) | Virtualization Support | virt-tar(1) |
virt-tar - 仮想マシンへのファイルの展開またはアップロード
virt-tar [--options] -x domname directory tarball virt-tar [--options] -u domname tarball directory virt-tar [--options] disk.img [disk.img ...] -x directory tarball virt-tar [--options] disk.img [disk.img ...] -u tarball directory
このツールは推奨されません。 代わりに virt-copy-in(1), virt-copy-out(1), virt-tar-in(1), virt-tar-out(1) を使用してください。
仮想マシンから "/home" をローカルの tar ファイルにダウンロードします:
virt-tar -x domname /home home.tar virt-tar -zx domname /home home.tar.gz
ローカルの tar ファイルをアップロードして、仮想マシンの "/tmp" に展開します:
virt-tar -u domname uploadstuff.tar /tmp virt-tar -zu domname uploadstuff.tar.gz /tmp
You must not use "virt-tar" with the -u option (upload) on live virtual machines. If you do this, you risk disk corruption in the VM. "virt-tar" tries to stop you from doing this, but doesn't catch all cases.
You can use -x (extract) on live virtual machines, but you might get inconsistent results or errors if there is filesystem activity inside the VM. If the live VM is synched and quiescent, then "virt-tar" will usually work, but the only way to guarantee consistent results is if the virtual machine is shut down.
"virt-tar" is a general purpose archive tool for downloading and uploading parts of a guest filesystem. There are many possibilities: making backups, uploading data files, snooping on guest activity, fixing or customizing guests, etc.
If you want to just view a single file, use virt-cat(1). If you just want to edit a single file, use virt-edit(1). For more complex cases you should look at the guestfish(1) tool.
There are two modes of operation: -x (eXtract) downloads a directory and its contents (recursively) from the virtual machine into a local tarball. -u uploads from a local tarball, unpacking it into a directory inside the virtual machine. You cannot use these two options together.
In addition, you may need to use the -z (gZip) option to enable compression. When uploading, you have to specify -z if the upload file is compressed because virt-tar won't detect this on its own.
"virt-tar" can only handle tar (optionally gzipped) format tarballs. For example it cannot do PKZip files or bzip2 compression. If you want that then you'll have to rebuild the tarballs yourself. (This is a limitation of the libguestfs(3) API).
仮想マシンのブロックデバイスを直接指定すると、libvirt はまったく使用されません。
If disk images are requested from libvirt, then this program asks libvirt for this information. In this case, the value of the format parameter is ignored.
If working with untrusted raw-format guest disk images, you should ensure the format is always specified.
ローカル tar ファイルから仮想マシンの中にアップロードおよび展開するには -u を使用します。このオプションを使用する前に "警告" セクションを参照してください。
これらのオプションのいずれかを正確に指定する必要があります。
guestfs(3), guestfish(1), virt-cat(1), virt-edit(1), virt-copy-in(1), virt-copy-out(1), virt-tar-in(1), virt-tar-out(1), Sys::Guestfs(3), Sys::Virt(3), http://libguestfs.org/.
Richard W.M. Jones http://people.redhat.com/~rjones/
Copyright (C) 2009 Red Hat Inc.
To get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools
To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools
When reporting a bug, please supply:
2019-02-07 | libguestfs-1.40.2 |