RFC for NBD protocol extension: extended headers
by Eric Blake
In response to this mail, I will be cross-posting a series of patches
to multiple projects as a proof-of-concept implementation and request
for comments on a new NBD protocol extension, called
NBD_OPT_EXTENDED_HEADERS. With this in place, it will be possible for
clients to request 64-bit zero, trim, cache, and block status
operations when supported by the server.
Not yet complete: an implementation of this in nbdkit. I also plan to
tweak libnbd's 'nbdinfo --map' and 'nbdcopy' to take advantage of the
larger block status results. Also, with 64-bit commands, we may want
to also make it easier to let servers advertise an actual maximum size
they are willing to accept for the commands in question (for example,
a server may be happy with a full 64-bit block status, but still want
to limit non-fast zero and cache to a smaller limit to avoid denial of
service).
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
2 years, 1 month
[p2v PATCH 00/10] Simplify NBD server management
by Laszlo Ersek
Repo: https://github.com/lersek/virt-p2v.git
Branch: nbd-servers-simplification
Rich proposed a list of tasks at
<https://listman.redhat.com/archives/libguestfs/2022-March/028475.html>,
for simplifying NBD server management. This series implements them.
Earlier I said I'd post this as an RFC series, but after reviewing and
testing the set myself, I decided to post it as a PATCH series.
The set builds at every stage. I verified the documentation
("docs/p2v-building.1" and "virt-p2v.1") at every stage that modifies
the sources of those files, too.
The set passes
make check
I also tested it with
make run-virt-p2v-in-an-nvme-vm
i.e. an actual conversion, running against a RHEL9 conversion server
(virt-v2v 1.45.99rhel=9,release=1.el9; nbdkit 1.30.1-1.el9.x86_64). The
converted guest boots fine. The conversion log is available if needed.
On the p2v (virtual) machine, I saved the interesting messages from the
serial console (they are interesting because they relate to code
modified by this series):
> [ 232.205162] launch-virt-p2v[669]: checking for nbdkit ...
> [ 233.209388] launch-virt-p2v[675]: nbdkit 1.28.6 (nbdkit-1.28.6-1.fc35)
> [ 233.213329] launch-virt-p2v[675]: file 1.28.6
> [ 233.216906] launch-virt-p2v[669]: found nbdkit
>
> [ 301.197612] launch-virt-p2v[669]: virt-p2v: bound to localhost:50123 (2 socket(s))
> [ 301.198566] launch-virt-p2v[669]: starting nbdkit for /dev/nvme0n1 using socket activation
> [ 301.220919] launch-virt-p2v[669]: ssh command: ssh -p 22 -l root -o StrictHostKeyChecking=no -o ConnectTimeout=60 -o ServerAliveInterval=300 -o ServerAliveCountMax=6 -o PreferredAuthentications=keyboard-interactive,password -R 0:localhost:50123 -N 192.168.122.184
> [ 301.225792] launch-virt-p2v[748]: nbdkit: file[1]: error: reading initial client flags: conn->recv: Connection reset by peer
>
> [ 301.583073] launch-virt-p2v[669]: virt-p2v: data connection for /dev/nvme0n1: SSH remote port 44479, local port 50123
>
> [ 301.588509] launch-virt-p2v[669]: virt-p2v: bound to localhost:50124 (2 socket(s))
> [ 301.592034] launch-virt-p2v[669]: starting nbdkit for /dev/nvme1n1 using socket activation
> [ 301.605749] launch-virt-p2v[669]: ssh command: ssh -p 22 -l root -o StrictHostKeyChecking=no -o ConnectTimeout=60 -o ServerAliveInterval=300 -o ServerAliveCountMax=6 -o PreferredAuthentications=keyboard-interactive,password -R 0:localhost:50124 -N 192.168.122.184
> [ 301.612459] launch-virt-p2v[751]: nbdkit: file[1]: error: reading initial client flags: conn->recv: Connection reset by peer
>
> [ 302.002998] launch-virt-p2v[669]: virt-p2v: data connection for /dev/nvme1n1: SSH remote port 35789, local port 50124
>
> [ 302.007171] launch-virt-p2v[669]: virt-p2v: bound to localhost:50125 (2 socket(s))
> [ 302.009976] launch-virt-p2v[669]: starting nbdkit for /dev/nvme1n2 using socket activation
> [ 302.020637] launch-virt-p2v[669]: ssh command: ssh -p 22 -l root -o StrictHostKeyChecking=no -o ConnectTimeout=60 -o ServerAliveInterval=300 -o ServerAliveCountMax=6 -o PreferredAuthentications=keyboard-interactive,password -R 0:localhost:50125 -N 192.168.122.184
> [ 302.026882] launch-virt-p2v[754]: nbdkit: file[1]: error: reading initial client flags: conn->recv: Connection reset by peer
>
> [ 302.410966] launch-virt-p2v[669]: virt-p2v: data connection for /dev/nvme1n2: SSH remote port 38663, local port 50125
I formatted the series with "-W" (aka "--function-context"), for easier
review.
Some patches are best viewed with "-b" (aka "--ignore-space-change"),
for masking un-indentation; I did not use that option for posting this
series, as it could interfere with applying the patches from the list.
For looking at some of the patches like that, fetch the series from the
URL at the top (or apply it from the list), and run "git show -b"
locally.
Thanks,
Laszlo
Laszlo Ersek (10):
remove qemu-nbd support
remove "--nbd=nbdkit-no-sa" option parsing
nbd.c: simplify start_nbdkit()
open-code "localhost" as the listen hostname for nbdkit
nbd.c: remove bind_source_port()
remove "--nbd" option parsing
nbd.c: remove nbd_server_string()
nbd.c: remove "enum nbd_server"
rely on Linux for killing nbdkit, when the parent thread exits
nbd.c: bind listening socket without AI_ADDRCONFIG
Makefile.am | 2 -
contrib/aux-scripts/do-build.sh | 7 +-
contrib/patches/0002-RHEL-5-ONLY-QEMU-NBD-1.4-HAS-NO-f-OPTION.patch | 34 --
conversion.c | 23 +-
dependencies.m4 | 6 +-
docs/p2v-building.pod | 9 +-
main.c | 7 +-
nbd.c | 514 +++-----------------
p2v.h | 10 +-
ssh.c | 6 +-
test-virt-p2v-nbdkit.sh | 6 +-
test-virt-p2v-scp.sh | 2 +-
test-virt-p2v-ssh.sh | 4 +-
test-virt-p2v.sh | 56 ---
virt-p2v.pod | 49 +-
15 files changed, 109 insertions(+), 626 deletions(-)
delete mode 100644 contrib/patches/0002-RHEL-5-ONLY-QEMU-NBD-1.4-HAS-NO-f-OPTION.patch
delete mode 100755 test-virt-p2v.sh
base-commit: c1a4bd83a8bba5959470ef1f6deb06dc61587112
--
2.19.1.3.g30247aa5d201
2 years, 7 months
[v2v PATCH] convert/linux_kernels: fix virtio-socket check
by Laszlo Ersek
The virtio-vsock support check from commit 05f780c16f01 ("v2v: support
configuration of viosock driver", 2021-02-26) is wrong; it looks for one
of two things:
- a module called "virtio_socket",
- a kernel config item called VIRTIO_SOCKET.
In reality, we need:
- the "vmw_vsock_virtio_transport" module,
- or the kernel config item VIRTIO_VSOCKETS.
Refer to Linux commit 304ba62fd4e6 ("VSOCK: Add Makefile and Kconfig",
2016-08-02).
Fix the parameters of the related "kernel_supports" call.
The same virt-v2v commit also missed extending the "print_kernel_info"
function; do that now as well.
I tested this patch by converting a RHEL-8.5 guest from libvirt to libvirt
(originally creating the guest with virt-builder). Relevant differences
between the "before" and "after" conversion logs:
> installed kernel packages in this guest:
> * kernel-core 4.18.0-348.el8.x86_64 (x86_64)
> /boot/vmlinuz-4.18.0-348.el8.x86_64
> /boot/initramfs-4.18.0-348.el8.x86_64.img
> /boot/config-4.18.0-348.el8.x86_64
> /lib/modules/4.18.0-348.el8.x86_64
> 2580 modules found
> virtio: blk=true net=true rng=true balloon=true
> - pvpanic=true xen=false debug=false
> + pvpanic=true vsock=true xen=false debug=false
and
> kernels offered by the bootloader in this guest (first in list is default):
> * kernel-core 4.18.0-348.el8.x86_64 (x86_64)
> /boot/vmlinuz-4.18.0-348.el8.x86_64
> /boot/initramfs-4.18.0-348.el8.x86_64.img
> /boot/config-4.18.0-348.el8.x86_64
> /lib/modules/4.18.0-348.el8.x86_64
> 2580 modules found
> virtio: blk=true net=true rng=true balloon=true
> - pvpanic=true xen=false debug=false
> + pvpanic=true vsock=true xen=false debug=false
> * kernel-core 4.18.0-348.el8.x86_64 (x86_64)
> /boot/vmlinuz-4.18.0-348.el8.x86_64
> /boot/initramfs-4.18.0-348.el8.x86_64.img
> /boot/config-4.18.0-348.el8.x86_64
> /lib/modules/4.18.0-348.el8.x86_64
> 2580 modules found
> virtio: blk=true net=true rng=true balloon=true
> - pvpanic=true xen=false debug=false
> + pvpanic=true vsock=true xen=false debug=false
and
> best kernel for this guest:
> * kernel-core 4.18.0-348.el8.x86_64 (x86_64)
> /boot/vmlinuz-4.18.0-348.el8.x86_64
> /boot/initramfs-4.18.0-348.el8.x86_64.img
> /boot/config-4.18.0-348.el8.x86_64
> /lib/modules/4.18.0-348.el8.x86_64
> 2580 modules found
> virtio: blk=true net=true rng=true balloon=true
> - pvpanic=true xen=false debug=false
> + pvpanic=true vsock=true xen=false debug=false
and
> gcaps_block_bus = virtio-blk
> gcaps_net_bus = virtio-net
> gcaps_virtio_rng = true
> gcaps_virtio_balloon = true
> gcaps_isa_pvpanic = true
> -gcaps_virtio_socket = false
> +gcaps_virtio_socket = true
> gcaps_machine = q35
> gcaps_arch = x86_64
> gcaps_acpi = true
> gcaps_virtio_1_0 = true
and
> resulting XML for libvirt:
> <?xml version='1.0' encoding='utf-8'?>
> <domain type='kvm'>
> <!-- generated by virt-v2v 2.0.1 -->
> <name>converted</name>
> <metadata>
> <libosinfo:libosinfo
> xmlns:libosinfo='http://libosinfo.org/xmlns/libvirt/domain/1.0'>
> <libosinfo:os id='http://redhat.com/rhel/8.5'/>
> </libosinfo:libosinfo>
> </metadata>
> <memory unit='KiB'>2097152</memory>
> <currentMemory unit='KiB'>2097152</currentMemory>
> <vcpu>2</vcpu>
> <features>
> <acpi/>
> <apic/>
> </features>
> <os>
> <type arch='x86_64' machine='q35'>hvm</type>
> </os>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
> <devices>
> <disk type='volume' device='disk'>
> <driver name='qemu' type='raw'/>
> <source pool='default' volume='converted-sda'/>
> <target dev='vda' bus='virtio'/>
> </disk>
> <interface type='bridge'>
> <source bridge='virbr0'/>
> <model type='virtio'/>
> <mac address='52:54:00:5c:cc:f8'/>
> </interface>
> <video>
> <model type='vga' vram='16384' heads='1'/>
> </video>
> <graphics type='spice' autoport='yes'/>
> <sound model='ich6'/>
> <rng model='virtio'>
> <backend model='random'>/dev/urandom</backend>
> </rng>
> <memballoon model='virtio'/>
> <panic model='isa'>
> <address type='isa' iobase='0x505'/>
> </panic>
> + <vsock model='virtio'/>
> <input type='tablet' bus='usb'/>
> <input type='mouse' bus='ps2'/>
> <console type='pty'/>
> </devices>
> </domain>
I also checked the device with "lspci", and the module with "lsmod", in
the converted domain.
Fixes: 05f780c16f0135c657615520c2245b42de1efc3e
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2070186
Signed-off-by: Laszlo Ersek <lersek(a)redhat.com>
---
convert/linux_kernels.ml | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/convert/linux_kernels.ml b/convert/linux_kernels.ml
index 6dead217ef71..307de5729e3e 100644
--- a/convert/linux_kernels.ml
+++ b/convert/linux_kernels.ml
@@ -61,8 +61,9 @@ let print_kernel_info chan prefix ki =
fpf "virtio: blk=%b net=%b rng=%b balloon=%b\n"
ki.ki_supports_virtio_blk ki.ki_supports_virtio_net
ki.ki_supports_virtio_rng ki.ki_supports_virtio_balloon;
- fpf "pvpanic=%b xen=%b debug=%b\n"
- ki.ki_supports_isa_pvpanic ki.ki_is_xen_pv_only_kernel ki.ki_is_debug
+ fpf "pvpanic=%b vsock=%b xen=%b debug=%b\n"
+ ki.ki_supports_isa_pvpanic ki.ki_supports_virtio_socket
+ ki.ki_is_xen_pv_only_kernel ki.ki_is_debug
let rex_ko = PCRE.compile "\\.k?o(?:\\.xz)?$"
let rex_ko_extract = PCRE.compile "/([^/]+)\\.k?o(?:\\.xz)?$"
@@ -248,7 +249,7 @@ let detect_kernels (g : G.guestfs) inspect family bootloader =
let supports_isa_pvpanic =
kernel_supports "pvpanic" "PVPANIC" in
let supports_virtio_socket =
- kernel_supports "virtio_socket" "VIRTIO_SOCKET" in
+ kernel_supports "vmw_vsock_virtio_transport" "VIRTIO_VSOCKETS" in
let is_xen_pv_only_kernel =
check_config "X86_XEN" config_file ||
check_config "X86_64_XEN" config_file in
--
2.19.1.3.g30247aa5d201
2 years, 7 months
Exporting ttyACM0 via nbd
by Marco Marinello
Hi all,
I'm trying to export the serial and i2c interfaces of a RaspberryPi to
another Linux host. The server OS is Raspbian stretch with nbdkit
1.1.12. If required, I can compile try to compile / backport a newer
version on my own.
I tried with
/usr/bin/nbdkit --newstyle -g dialout -v file file=/dev/ttyACM0
but it says
nbdkit: error: file is not regular or block device: /dev/ttyACM0
Also streaming does not seem to fit to my use case since I will need
bi-directional communication.
Is what I'm trying to do possible? Can you give me some hint / reference
to look into?
Thanks in advance,
All the best
Marco
2 years, 7 months
inspect-os cannot detect Windows hostname
by Nikolay Ivanets
Hello
I've faced several different cases where inspect-os cannot detect Windows
hostname.
I see the following message during inspect-os call (in debug mode):
check_windows_system_registry: cannot locate
HKLM\SYSTEM\ControlSet001\Services\Tcpip\Parameters
and/or Hostname key
inspect-get-hostname returns 'unknown' in such case:
><fs> inspect-get-hostname /dev/sda1
unknown
However, hostname can be read using:
><fs> mount /dev/sda1 /
><fs> debug sh 'hivexget /sysroot/Windows/System32/config/SYSTEM
ControlSet001\\Services\\Tcpip\\Parameters hostname'
MidServerNew
A sample registry hive is attached.
--
Mykola Ivanets
2 years, 7 months
Regression with LDM devices
by Nikolay Ivanets
Hello
This commit caused a regression with LDM devices:
https://github.com/libguestfs/libguestfs/commit/86577ee3883836c1c4fff258c...
1. list-filesystems double all LDM volumes:
><fs> list-filesystems
/dev/mapper/ldm_vol_AQ-W10-EFI-VM-Dg0_Volume5: ntfs
/dev/sda1: ntfs
/dev/sda2: vfat
/dev/mapper/ldm_vol_AQ-W10-EFI-VM-Dg0_Volume5: ntfs
2. inspect-os in this case detects 2 OSes:
><fs> inspect-os
/dev/mapper/ldm_vol_AQ-W10-EFI-VM-Dg0_Volume5
/dev/mapper/ldm_vol_AQ-W10-EFI-VM-Dg0_Volume5
The issue is that now we explicitly adds DM devices to a list of file
systems, but latter we also selectively adds LDM volumes. Which also DM
devices:
><fs> list-ldm-volumes
/dev/mapper/ldm_vol_AQ-W10-EFI-VM-Dg0_Volume5
><fs> list-dm-devices
/dev/mapper/ldm_vol_AQ-W10-EFI-VM-Dg0_Volume5
It would be easy to fix leaving only unique file systems eliminating
duplicates, however it would not help if LDM contains volumes of type other
than simple. Such a volumes consist of LDM partitions which are also DM
devices and thus the mentioned patch will include them into a list if file
systems but LDM partitions cannot contains file system. Here you can see an
example of both cases where list-filesystems returns doubled LDM volumes as
well as LDM partitions. Later cannot contains file system:
><fs> list-filesystems
/dev/mapper/ldm_part_WIN-RSVUTBNGR5D-Dg0_Disk1-01: unknown
/dev/mapper/ldm_part_WIN-RSVUTBNGR5D-Dg0_Disk1-02: ntfs
/dev/mapper/ldm_part_WIN-RSVUTBNGR5D-Dg0_Disk2-01: unknown
/dev/mapper/ldm_part_WIN-RSVUTBNGR5D-Dg0_Disk2-02: ntfs
/dev/mapper/ldm_part_WIN-RSVUTBNGR5D-Dg0_Disk3-01: unknown
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume1: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume10: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume11: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume2: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume3: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume4: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume5: vfat
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume6: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume7: vfat
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume8: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume9: unknown
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume1: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume10: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume11: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume2: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume3: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume4: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume5: vfat
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume6: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume7: vfat
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume8: ntfs
/dev/mapper/ldm_vol_WIN-RSVUTBNGR5D-Dg0_Volume9: unknown
--
Mykola Ivanets
2 years, 7 months
[PATCH p2v] ssh: Allow interop with virt-v2v 2.0
by Richard W.M. Jones
The code previously checked that the remote version of virt-v2v was
1.x and >= 1.28. Since virt-v2v 2.0 has been released and is broadly
compatible, allow 2.0 as well.
---
ssh.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/ssh.c b/ssh.c
index ce0caaa..7ac43eb 100644
--- a/ssh.c
+++ b/ssh.c
@@ -1030,11 +1030,11 @@ add_output_driver (const char *name, size_t len)
static int
compatible_version (const char *v2v_version)
{
- unsigned v2v_minor;
+ unsigned v2v_major, v2v_minor;
- /* The major version must always be 1. */
- if (!STRPREFIX (v2v_version, "1.")) {
- set_ssh_error ("virt-v2v major version is not 1 (\"%s\"), "
+ /* The major version must always be 1 or 2. */
+ if (! (STRPREFIX (v2v_version, "1.") || STRPREFIX (v2v_version, "2."))) {
+ set_ssh_error ("virt-v2v major version is not 1 or 2 (\"%s\"), "
"this version of virt-p2v is not compatible.",
v2v_version);
return 0;
@@ -1045,13 +1045,13 @@ compatible_version (const char *v2v_version)
* that we published during development, nor (b) using old virt-v2v.
* We should remain compatible with any virt-v2v after 1.28.
*/
- if (sscanf (v2v_version, "1.%u", &v2v_minor) != 1) {
+ if (sscanf (v2v_version, "%u.%u", &v2v_major, &v2v_minor) != 2) {
set_ssh_internal_error ("cannot parse virt-v2v version string (\"%s\")",
v2v_version);
return 0;
}
- if (v2v_minor < 28) {
+ if (v2v_major == 1 && v2v_minor < 28) {
set_ssh_error ("virt-v2v version is < 1.28 (\"%s\"), "
"you must upgrade to virt-v2v >= 1.28 on "
"the conversion server.", v2v_version);
--
2.35.1
2 years, 7 months
[p2v PATCH 0/2] recognize NVMe devices
by Laszlo Ersek
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1945835
The first (trivial) patch modifies the code, the second (cumbersome)
patch adds a new makefile target to exercise the code. I separated the
patches like this so that the second one can be dropped if necessary.
Thanks,
Laszlo
Laszlo Ersek (2):
recognize NVMe devices
Makefile.am: add "run-virt-p2v-in-an-nvme-vm"
Makefile.am | 32 ++++++++++++++++++++
main.c | 1 +
docs/p2v-hacking.pod | 11 ++++---
3 files changed, 40 insertions(+), 4 deletions(-)
--
2.19.1.3.g30247aa5d201
2 years, 7 months
[PATCH v2 0/3] Spec cleanups before 64-bit extensions
by Eric Blake
Widening the cc list this time. Patch 1 and 2 are unchanged, but I
spent more time rewording the changes in patch 3.
Eric Blake (3):
docs: Clarify NBD_REPLY_TYPE_ERROR lengths
docs: Clarify structured reads vs. block size constraints
spec: Clarify BLOCK_STATUS reply details
doc/proto.md | 57 ++++++++++++++++++++++++++++++++--------------------
1 file changed, 35 insertions(+), 22 deletions(-)
--
2.35.1
2 years, 8 months
Virt-v2v binary size
by Richard W.M. Jones
... is about 5MB stripped, which is not terrible, but also not great.
I wrote a trivial Perl script to try to find out what's using the
space and the report is attached.
Also:
$ size -d v2v/virt-v2v
text data bss dec hex filename
3580677 1654384 36944 5272005 5071c5 v2v/virt-v2v
Main take aways are:
Frametables take around 21% of the on-disk space and around 31% of the
text, which is a bit surprising. These are added by the OCaml
compiler in order to track which stack slots are GC roots. I think
the OCaml compiler could do a lot better here and I might raise an
upstream bug if I can come up with a small demonstrator. However
simply reducing the amount of code linked in helps.
Libguestfs bindings are the next big item. Virt-v2v links dynamically
to libguestfs.so.0, but the bindings code that translates from OCaml
to C and back is linked statically, and it's huge. It's particularly
big because we link in every binding (libguestfs has something like
650 entry points), but we only use a handful from virt-v2v. I think
we might be able to do something about this.
Some OCaml standard libraries are inexplicably big (Scanf? List?!)
Most of the rest is actual code in virt-v2v or common/ subdirectory
code.
Code in particular modules is quite compact eg. Convert_linux which
does the bulk of conversion of Linux guests is 24K.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top
2 years, 8 months
