search for: sparsif

$ qemu-img create -f qcow2 -b /tmp/centos-6.img overlay.qcow2 $ virt-sparsify --in-place overlay.qcow2 virt-sparsify: error: disk image 'overlay.qcow2' appears to have a backing file. You should use copying mode sparsification for this file (see the virt-sparsify(1) manual). Thanks: Yaniv Kaul --- sparsify/in_place.ml | 5 +++++ 1 file changed, 5 insertions(+) d...

Make use of the additional command line arguments, and API needed to decrypt LUKS partitions. This affects only virt-customize, virt-get-kernel, virt-sparsify, and virt-sysprep, as they are the main OCaml tools interacting with user-provided images. --- customize/customize_main.ml | 5 ++++- customize/virt-customize.pod | 12 ++++++++++++ get-kernel/get_kernel.ml | 5 ++++- get-kernel/virt-get-kernel.pod | 12 ++++++++++++ sparsify/cmdline...

Fast testing whether the AIO buffer (or regions within it) contain all zeroes, which allows Python code to quickly do sparsification when copying. This includes the iszero.h header from nbdkit which is distributed under a compatible license. --- common/include/Makefile.am | 5 +-- common/include/iszero.h | 63 +++++++++++++++++++++++++++++++++++++ generator/generator | 17 ++++++++-- python/Makefile.am...

This set of patches: - Adds new APIs to support discard in libguestfs. - Adds discard support to virt-format. - Adds discard support to virt-sysprep. - Implements virt-sparsify --in-place. This is now working, after fixing the rather stupid bug in fstrim. I've pushed the ones which were ACKed previously + the fstrim fix. Rich.

On Thu, Jan 30, 2020 at 08:16:30AM -0600, Eric Blake wrote: > On 1/30/20 8:05 AM, Richard W.M. Jones wrote: > >Fast testing whether the AIO buffer (or regions within it) contain all > >zeroes, which allows Python code to quickly do sparsification when > >copying. > > > >This includes the iszero.h header from nbdkit which is distributed > >under a compatible license. > >--- > > common/include/Makefile.am | 5 +-- > > common/include/iszero.h | 63 +++++++++++++++++++++++++++++++++++++ &gt...

The following patch attempts to implement sparsification of LUKS-encrypted partitions. It uses lsblk to pair the underlying LUKS block device with its mapped name. Also, --allow-discards was added by default to luks_open(). There are several potential issues that I can think of: 1) If and entire device is encrypted (not just one of more partitio...

Hi, this series refactors some guestfish code (not much), and exposes it via Common_utils, so it is possible to decrypt LUKS partitions when using virt-customize, virt-get-kernel, virt-sparsify, and virt-sysprep. This brings them closer in features with C tools. Most probably a couple more of other OCaml-based tools (virt-v2v to convert encrypted guests, and virt-builder to use encrypted templates), but that is left for implementation at a later time. Thanks, Pino Toscano (3): fish...

...9/15/2015 04:57 PM, Richard W.M. Jones wrote: > On Tue, Sep 15, 2015 at 04:31:46PM +0300, Maxim Perevedentsev wrote: >> Hello everyone! >> >> I am working on resizing qcow2 images using virt-resize+liguestfs. > If you're shrinking, I believe a better way to do this is to sparsify > the image. And how would it help? If I shrink, a want a VM to occupy less maximum space. virt-sparsify (I guess you are talking about it) will reduce space taken by guest disk image by now, but won't tighten the upper limit for guest. -- Your sincerely, Maxim Perevedentsev

The following patch implements sparsification of LUKS-encrypted partitions. It uses lsblk to pair the underlying LUKS block device with its mapped name. To sparsify a LUKS-encrypted device, it needs to be opened using --allow-discards. Support for the argument was submitted as a separate patch [1]. [1] https://www.redhat.com/archives/l...

The following patch implements sparsification of LUKS-encrypted partitions. It uses lsblk to pair the underlying LUKS block device with its mapped name. To sparsify a LUKS-encrypted device, it needs to be opened using --allow-discards. Support for the argument was submitted as a separate patch [1]. [1] https://www.redhat.com/archives/l...

The following patch implements sparsification of LUKS-encrypted partitions. It uses lsblk to pair the underlying LUKS block device with its mapped name. To sparsify a LUKS-encrypted device, it needs to be opened using --allow-discards. Support for the argument was submitted as a separate patch [1]. [1] https://www.redhat.com/archives/l...

On 1/30/20 8:05 AM, Richard W.M. Jones wrote: > Fast testing whether the AIO buffer (or regions within it) contain all > zeroes, which allows Python code to quickly do sparsification when > copying. > > This includes the iszero.h header from nbdkit which is distributed > under a compatible license. > --- > common/include/Makefile.am | 5 +-- > common/include/iszero.h | 63 +++++++++++++++++++++++++++++++++++++ > generator/generator...

On Tue, Jan 21, 2020 at 03:07:11PM +0100, Jan Synacek wrote: > The following patch attempts to implement sparsification of > LUKS-encrypted partitions. It uses lsblk to pair the underlying LUKS > block device with its mapped name. Also, --allow-discards was added > by default to luks_open(). > > There are several potential issues that I can think of: > > 1) If and entire device is encry...

This still isn't working at the moment. See: http://marc.info/?t=139457409300003&r=1&w=2 This set of patches: - Adds new APIs to support discard in libguestfs. - Adds discard support to virt-format. - Adds discard support to virt-sysprep. - Implements virt-sparsify --in-place. Rich.

v1 was here: https://www.redhat.com/archives/libguestfs/2019-November/msg00271.html In v2 I just updated the way paths are handled. Note this series requires the following patch to common which adds the common/options/key-option.pod file: https://www.redhat.com/archives/libguestfs/2019-November/msg00269.html Rich.

The libguestfs part of this change. Also a virt-v2v part will be needed. The first patch adds a new feature to podwrapper so that we can use __INCLUDE:file__ directives within the POD itself (instead of using --insert, and one day replacing that). The second patch shows how this change could be used for the included parts of the guestfish man page, including the non-English pages under

...ed, Jun 22, 2016 at 05:56:09PM -0500, libvirt_users@skagitattic.com wrote: > > Delete what you've done and start from the beginning. Describe > > exactly how you created the guest. Use 'qemu-img info' to show the > > format of the input file. Show precisely the virt-sparsify command > > you are running. And use 'qemu-img info' on the output file too. > > Okay, here goes. Start off with an install > > root@testingbox:~ # virt-install --name testimage --memory 512 -l > 'http://ftp.nl.debian.org/debian/dists/jessie/main/insta...

...1PM +0000, Richard W.M. Jones wrote: >On Thu, Jan 30, 2020 at 08:16:30AM -0600, Eric Blake wrote: >> On 1/30/20 8:05 AM, Richard W.M. Jones wrote: >> >Fast testing whether the AIO buffer (or regions within it) contain all >> >zeroes, which allows Python code to quickly do sparsification when >> >copying. >> > >> >This includes the iszero.h header from nbdkit which is distributed >> >under a compatible license. >> >--- >> > common/include/Makefile.am | 5 +-- >> > common/include/iszero.h | 63 +++++++++++++...

...ted in nbd_get_tls_username(3). The handle name in nbdsh(1) is now set to "nbdsh" (instead of a randomly generated name). Compatibility with OCaml 4.10.0 and 4.11.0. Python AIO buffer adds a new "is_zero" method allowing Python clients to do sparsification when copying. Compatibility with Python 3.9. External C programs can now be compiled against libnbd’s build directory using "../libnbd/run ./configure". Honggfuzz can be used as another external fuzzing option. Fix compilation with glibc 2.32...

Hello, Thanks for all the information, I think my last remaining question is why the image created with virt-install shows the full apparent size and the image from virt-sparsify does not? (The image testimage1.qcow2 created with default options). As they are both qcow2 I would expect them both to have the same behavior as far as apparent size goes. Or is there an option I am missing in virt-sparsify that would keep the full apparent size? Or perhaps one in virt-instal...