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Operating Systems Linux Best tuning for qemu windows guest(windows 7) Post 303025176 by Linusolaradm1 on Thursday 25th of October 2018 11:11:59 PM
Old 10-26-2018
with scsi-virtio controller and qemu 3.0 best work with


cache=unsafe
io=threads
discard mode=ignore
detect zeroes=off
 

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libguestfs-test-tool(1) 				      Virtualization Support					   libguestfs-test-tool(1)

NAME
libguestfs-test-tool - Diagnostics for libguestfs SYNOPSIS
libguestfs-test-tool [--options] DESCRIPTION
libguestfs-test-tool is a test program shipped with libguestfs to allow you to check basic libguestfs functionality is working. This is needed because libguestfs occasionally breaks for reasons beyond our control: usually because of changes in the underlying qemu or kernel packages, or the host environment. If you suspect a problem in libguestfs, then just run: libguestfs-test-tool It will print lots of diagnostic messages. If it runs to completion successfully, you will see this near the end: ===== TEST FINISHED OK ===== and the test tool will exit with code 0. If it fails (and/or exits with non-zero error code), please paste the complete, unedited output of the test tool into a bug report. More information about reporting bugs can be found on the <http://libguestfs.org/> website. OPTIONS
--help Display short usage information and exit. --qemu qemu_binary If you have downloaded another qemu binary, point this option at the full path of the binary to try it. --qemudir qemu_source_dir If you have compiled qemu from source, point this option at the source directory to try it. -t N --timeout N Set the launch timeout to "N" seconds. The default is 600 seconds (10 minutes) which does not usually need to be adjusted. -V --version Display the libguestfs version number and exit. TRYING OUT A DIFFERENT VERSION OF QEMU
If you have compiled another version of qemu from source and would like to try that, then you can use the --qemudir option to point to the qemu source directory. If you have downloaded a qemu binary from somewhere, use the --qemu option to point to the binary. Note when using these options, you can ignore the business of qemu wrapper scripts ("QEMU WRAPPERS" in guestfs(3)), since libguestfs-test- tool writes a wrapper script for you if one is needed. TRYING OUT A DIFFERENT KERNEL
If you are using febootstrap >= 3.8 then you can select which kernel libguestfs tries. You do this by setting the environment variables "FEBOOTSTRAP_KERNEL" and/or "FEBOOTSTRAP_MODULES". Refer to "ENVIRONMENT VARIABLES" in febootstrap-supermin-helper(8) for further information. SELF-DIAGNOSIS Refer to "APPLIANCE BOOT PROCESS" in guestfs(3) to understand the messages produced by libguestfs-test-tool and/or possible errors. EXIT STATUS
libguestfs-test-tool returns 0 if the tests completed without error, or 1 if there was an error. ENVIRONMENT VARIABLES
For the full list of environment variables which may affect libguestfs, please see the guestfs(3) manual page. SEE ALSO
guestfs(3), <http://libguestfs.org/>, <http://qemu.org/>. AUTHORS
Richard W.M. Jones ("rjones at redhat dot com") COPYRIGHT
Copyright (C) 2009-2012 Red Hat Inc. <http://libguestfs.org/> 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 libguestfs-test-tool(1)
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