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...is available in Koji here: http://koji.fedoraproject.org/koji/packageinfo?packageID=8391 (These release notes cover all the significant changes since the last announcement which was for 1.0.67, 2 months ago). New features: - FUSE support so you can mount guest filesystems in the host: http://rwmj.wordpress.com/2009/11/03/browsing-guests-using-fuse/ - Support for btrfs, gfs, gfs2, hfs, hfs+, nilfs2, jfs, reiserfs, xfs: http://rwmj.wordpress.com/2009/11/08/filesystem-metadata-overhead/ - Support for huge (multi-exabyte) sparse virtual disks: http://rwmj.wordpress.com/2009/11/04/peta...

...;s delay and fault-injection filters for inserting delays or > > even run-time-controllable failures to investigate how the guest > > reacts to those situations > > > Thank you all very much for the suggestions. I will take a look on nbdkit. These links should help: https://rwmj.wordpress.com/2018/09/04/nbdkit-for-loopback-pt-2-injecting-errors/ https://rwmj.wordpress.com/2018/09/06/nbdkit-for-loopback-pt-7-a-slow-disk/ This link shows how to combine delay and error filters together: https://rwmj.wordpress.com/2018/11/04/nbd-graphical-viewer/ Rich. -- Richard Jone...

...actical reasons: - Dropping mandatory [key=].. (ie. "magic config key") for many plugin parameters makes nbdkit much easier to use and easier to describe to potential users. - Demonstrated utility of log filter and error filter for testing and visualizing block devices. (https://rwmj.wordpress.com/2018/11/06/nbd-graphical-viewer-raid-5-edition/) - Lots of attention to limits / large virtual sizes (eg https://rwmj.wordpress.com/2018/09/05/nbdkit-for-loopback-pt-5-8-exabyte-btrfs-filesystem/) I hope to give a FOSDEM talk next year and it would be nice to have a stable set of...

...der.ml#L582-L585 > > > > I should say this only applies when the image needs to be resized > > (ie. you supply a --size parameter which != the size of the template), > > AND if the resize is the final step that the planner comes up with. > > > > > > https://rwmj.wordpress.com/2013/12/14/writing-a-planner-to-solve-a-tricky-programming-optimization-problem/ > > > Oh. I don't think there[1] is any need to resize in the code, it's just > directly using the templates virt-builder uses, AFAIK. The problem is: Suppose the input template is...

...t; https://github.com/libguestfs/libguestfs/blob/master/builder/builder.ml#L582-L585 I should say this only applies when the image needs to be resized (ie. you supply a --size parameter which != the size of the template), AND if the resize is the final step that the planner comes up with. https://rwmj.wordpress.com/2013/12/14/writing-a-planner-to-solve-a-tricky-programming-optimization-problem/ In the general case implementing this is more complicated. I think it would require another planner transition. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones...

...hing is that we No matter, our image all use vhd or raw, not qcow2.:) > didn't support UML in 1.20 -- it was added in 1.24. > > Rich. > > -- > Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones > Read my programming and virtualization blog: http://rwmj.wordpress.com > virt-builder quickly builds VMs from scratch > http://libguestfs.org/virt-builder.1.html -- Regards, Zhi Yong Wu

...ow2 on the /home/test/, and create a 50GB file. > > Mount the disk how? OK, subject says using guestmount. I'm surprised the slowdown isn't more than 95%. It's using FUSE which goes through an insane number of layers, see the "Update" section in this post: https://rwmj.wordpress.com/2009/10/30/fuse-support-for-libguestfs/ Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from...

how to use python-guestfs to access rbd device? The function i found is g.add_drive_opts, but i dono know how it receive ceph's configuration. I found this link http://rwmj.wordpress.com/2013/03/12/accessing-ceph-rbd-sheepdog-etc-using-libguestfs/ Is that the only way i should use to access ceph rbd? Can we use python-guestfs to get the same effect? Thanks

...ause libvirt-daemon-kvm >= 1.2.8-3 is required and only libvirt-daemon-kvm-1.1.1-29.el7_0.3.x86_64 is available ? I'll upload it in the next 30 mins. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/

I come across this page libguestfs.org/guestfs-performance.1.html <http://libguestfs.org/guestfs-performance.1.html> This raises my interest. I am currently learning how to benchmark performance qemu. So here is my questions: 1. Can I use guestfish or any tools provided by libguestfs to benchmark qemu? How? (The command I use below is correct or what's the correct command to execute

http://rwmj.wordpress.com/2013/03/12/accessing-ceph-rbd-sheepdog-etc-using-libguestfs/#comment-8806 I came across this link and and i was able to retrieve the rbd image. $ guestfish ><fs> set-attach-method appliance ><fs> add-drive /dev/null ><fs> config -set drive.hd0.file=rbd:poo...

On Mon, Feb 08, 2016 at 04:50:09PM -0800, Joshua Pincus wrote: > Mr Jones, > > I recently came across your excellent 2010 blog entry, > https://rwmj.wordpress.com/2010/04/30/tip-install-a-device-driver-in-a-windows-vm/. > The blog entry was incredibly useful for Win7. I was wondering if you have > any similar insights for Win10? The CDDB is gone, and it's replacement, or > partial replacement, the DeviceDriver database, doesn'...

...#!/bin/bash' >>> then you would have to install bash in the guest. >>> >>> Rich. >>> >>> -- >>> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones >>> Read my programming and virtualization blog: http://rwmj.wordpress.com >>> virt-builder quickly builds VMs from scratch >>> http://libguestfs.org/virt-builder.1.html > > -- > Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones <http://people.redhat.com/~rjones> > Read my programming and virt...

This shaves about 20% off the compile time for the daemon subdirectory. See also: https://rwmj.wordpress.com/2015/09/30/make-and-queuing-theory/#content --- daemon/Makefile.am | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/daemon/Makefile.am b/daemon/Makefile.am index 1d29a0f..4ea3c88 100644 --- a/daemon/Makefile.am +++ b/daemon/Makefile.am @@ -76,7 +76,11 @@ else...

...01:35:08AM +0800, Zhi Yong Wu wrote: >> On Mon, Sep 29, 2014 at 1:27 AM, Richard W.M. Jones <rjones@redhat.com> wrote: >> > User-Mode Linux is also a possibility. Slow but consistent >> Slow is a big concern... > > There are some measurements here: > > http://rwmj.wordpress.com/2013/08/14/performance-of-user-mode-linux-as-a-libguestfs-backend/ What do you think that it is good to backport UML support to 1.20? > > Rich. > > -- > Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones > Read my programming and virtualiz...

...ter/daemon/base64.c#L100 For information on adding APIs, see: http://libguestfs.org/guestfs-hacking.1.html#adding-a-new-api This question of how do you find which disk block is associated with a particular file comes up often enough that I have looked at it various times on my blog: https://rwmj.wordpress.com/2014/02/21/use-guestfish-and-nbdkit-to-examine-physical-disk-locations/ https://rwmj.wordpress.com/2014/11/23/mapping-files-to-disk/ Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wo...

Hi, Mr. Rich. I am sorry that I left too little information in the last email because I edited with my mobile phone. I wrote about my first question in the following link. https://rwmj.wordpress.com/2010/11/15/libguestfs-inspection-now-lists-windows-apps/ 2nd. Question After I call the mount_local() function in guestfs.py to operate on a disk, I hope to umount it. After calling the umount_local() function, the program hangs in the foreground and no log is displayed after that....

...n-existing interpreter. IOW if the script starts with `#!/bin/bash' > then you would have to install bash in the guest. > > Rich. > > -- > Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones > Read my programming and virtualization blog: http://rwmj.wordpress.com > virt-builder quickly builds VMs from scratch > http://libguestfs.org/virt-builder.1.html

...4PM -0400, habib dan aouta wrote: > Hello Richard, > > Hope you are doing well. My name is Habib and I am current student > at the University of North Carolina at Charlotte(U.S). I am > currently following your Libnbd client fuzzing tutorial from the > Wordpress articles [https://rwmj.wordpress.com/2019/10/09/using-american-fuzzy-lop-on-network-clients/#content] > and I am having issues compiling the > Libnbd-wrapper.c file. After some research I am missing the > Libnbd.so library file that I cannot seems to find anywhere. It will > be nice if you can provide some h...

Hello, It's me again with one more misunderstanding of libguestfs usage... Guestfish (as well as python libguestfs module) refuse to mount logical volume containing the root partition of the VM's filesystem. According to this short guide<http://rwmj.wordpress.com/2009/04/07/libguestfs-lvm-support/> I am trying to mount /dev/vg_kojit/lv_root as "/", but nothing works: [root@rhevh1 integrity]# [root@rhevh1 integrity]# [root@rhevh1 integrity]# [root@rhevh1 integrity]# guestfish Welcome to guestfish, the libguestfs filesystem intera...