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Top Forums UNIX for Advanced & Expert Users Problems with tar between local and nfs disk Post 302308302 by Corona688 on Friday 17th of April 2009 04:12:58 PM
Old 04-17-2009
Try creating a file manually and seeing who owns it, the nfs server may not allow other owners. Otherwise, try 'tar cpf - .' and 'tar xpf -'.
 

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virt-tar(1)						      Virtualization Support						       virt-tar(1)

NAME
virt-tar - Extract or upload files to a virtual machine SYNOPSIS
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 OBSOLETE
This tool is obsolete. Use virt-copy-in(1), virt-copy-out(1), virt-tar-in(1), virt-tar-out(1) as replacements. EXAMPLES
Download "/home" from the VM into a local tarball: virt-tar -x domname /home home.tar virt-tar -zx domname /home home.tar.gz Upload a local tarball and unpack it inside "/tmp" in the VM: virt-tar -u domname uploadstuff.tar /tmp virt-tar -zu domname uploadstuff.tar.gz /tmp WARNING
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. DESCRIPTION
"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). OPTIONS
--help Display brief help. --version Display version number and exit. -c URI --connect URI If using libvirt, connect to the given URI. If omitted, then we connect to the default libvirt hypervisor. If you specify guest block devices directly, then libvirt is not used at all. --format raw Specify the format of disk images given on the command line. If this is omitted then the format is autodetected from the content of the disk image. 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. -x --extract --download -u --upload Use -x to extract (download) a directory from a virtual machine to a local tarball. Use -u to upload and unpack from a local tarball into a virtual machine. Please read the "WARNING" section above before using this option. You must specify exactly one of these options. -z --gzip Specify that the input or output tarball is gzip-compressed. SHELL QUOTING
Libvirt guest names can contain arbitrary characters, some of which have meaning to the shell such as "#" and space. You may need to quote or escape these characters on the command line. See the shell manual page sh(1) for details. SEE ALSO
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::Guestfs::Lib(3), Sys::Virt(3), <http://libguestfs.org/>. AUTHOR
Richard W.M. Jones <http://people.redhat.com/~rjones/> COPYRIGHT
Copyright (C) 2009 Red Hat Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. libguestfs-1.18.1 2013-12-07 virt-tar(1)
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