enable build for ocaml bytecode
by Olaf Hering
This is a first attempt to build libguestfs with just a ocaml bytecode
compiler. The three tools written in ocaml will be build only when an
ocamlopt compiler is available.
Olaf
---
Makefile.am | 5 ++++-
configure.ac | 2 ++
ocaml/Makefile.am | 20 +++++++++++++++++---
resize/Makefile.am | 2 +-
sparsify/Makefile.am | 2 +-
sysprep/Makefile.am | 2 +-
6 files changed, 26 insertions(+), 7 deletions(-)
Index: libguestfs-1.20.1/Makefile.am
===================================================================
--- libguestfs-1.20.1.orig/Makefile.am
+++ libguestfs-1.20.1/Makefile.am
@@ -74,7 +74,10 @@ if HAVE_PERL
SUBDIRS += perl perl/examples
endif
if HAVE_OCAML
-SUBDIRS += ocaml ocaml/examples
+SUBDIRS += ocaml
+endif
+if HAVE_OCAMLOPT
+SUBDIRS += ocaml/examples
endif
if HAVE_PYTHON
SUBDIRS += python python/examples
Index: libguestfs-1.20.1/configure.ac
===================================================================
--- libguestfs-1.20.1.orig/configure.ac
+++ libguestfs-1.20.1/configure.ac
@@ -865,6 +865,8 @@ AS_IF([test "x$enable_ocaml" != "xno"],
])
AM_CONDITIONAL([HAVE_OCAML],
[test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno"])
+AM_CONDITIONAL([HAVE_OCAMLOPT],
+ [test "x$OCAMLOPT" != "xno" && test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno"])
AM_CONDITIONAL([HAVE_OCAMLDOC],
[test "x$OCAMLDOC" != "xno"])
Index: libguestfs-1.20.1/ocaml/Makefile.am
===================================================================
--- libguestfs-1.20.1.orig/ocaml/Makefile.am
+++ libguestfs-1.20.1/ocaml/Makefile.am
@@ -43,10 +43,20 @@ CLEANFILES += t/*.cmi t/*.cmo t/*.cmx t/
if HAVE_OCAML
+DATA_HOOK_FILES = META *.so *.a *.cma \
+ *.cmi $(srcdir)/*.mli
+if HAVE_OCAMLOPT
+DATA_HOOK_FILES += *.cmx *.cmxa
+endif
+
OCAMLCFLAGS = -g -warn-error CDEFLMPSUVYZX
OCAMLOPTFLAGS = $(OCAMLCFLAGS)
-noinst_DATA = mlguestfs.cma mlguestfs.cmxa META
+noinst_DATA = mlguestfs.cma
+if HAVE_OCAMLOPT
+noinst_DATA += mlguestfs.cmxa
+endif
+noinst_DATA += META
# Build the C part into a library, so that automake handles the C
# compilation step for us. Note that we don't directly use this
@@ -101,9 +111,13 @@ TESTS = run-bindtests \
$(patsubst %,%.opt,$(test_progs)))
noinst_DATA += \
- bindtests.bc bindtests.opt \
+ bindtests.bc
+if HAVE_OCAMLOPT
+noinst_DATA += \
+ bindtests.opt \
$(test_progs:%=%.bc) \
$(test_progs:%=%.opt)
+endif
bindtests.bc: bindtests.cmo mlguestfs.cma
mkdir -p t
@@ -217,7 +231,7 @@ install-data-hook:
$(OCAMLFIND) install \
-ldconf ignore -destdir $(DESTDIR)$(OCAMLLIB) \
guestfs \
- META *.so *.a *.cma *.cmx *.cmxa *.cmi $(srcdir)/*.mli
+ $(DATA_HOOK_FILES)
rm $(DESTDIR)$(OCAMLLIB)/guestfs/bindtests.*
rm $(DESTDIR)$(OCAMLLIB)/guestfs/libguestfsocaml.a
Index: libguestfs-1.20.1/resize/Makefile.am
===================================================================
--- libguestfs-1.20.1.orig/resize/Makefile.am
+++ libguestfs-1.20.1/resize/Makefile.am
@@ -40,7 +40,7 @@ SOURCES = \
resize_utils.ml \
resize_utils_tests.ml
-if HAVE_OCAML
+if HAVE_OCAMLOPT
# Note this list must be in dependency order.
OBJECTS = \
Index: libguestfs-1.20.1/sparsify/Makefile.am
===================================================================
--- libguestfs-1.20.1.orig/sparsify/Makefile.am
+++ libguestfs-1.20.1/sparsify/Makefile.am
@@ -36,7 +36,7 @@ SOURCES = \
sparsify_gettext.ml \
sparsify_utils.ml
-if HAVE_OCAML
+if HAVE_OCAMLOPT
# Note this list must be in dependency order.
OBJECTS = \
Index: libguestfs-1.20.1/sysprep/Makefile.am
===================================================================
--- libguestfs-1.20.1.orig/sysprep/Makefile.am
+++ libguestfs-1.20.1/sysprep/Makefile.am
@@ -86,7 +86,7 @@ SOURCES = \
utils.ml \
utils.mli
-if HAVE_OCAML
+if HAVE_OCAMLOPT
# Note this list must be in dependency order.
OBJECTS = \
10 years, 8 months
[PATCH] sysprep: handle distro specific sysv scripts
by Olaf Hering
Currently firstboot would only work on redhat-based images.
Handle redhat-based, suse-based and debian guests, error out in case of an
unknown distro.
Update firstboot.sh:
- make sure scripts exists and can be executed
- add LSB header to avoid insserv warnings later on
- run script only if called with "start"
Update functions, pass only required options.
Signed-off-by: Olaf Hering <olaf(a)aepfle.de>
diff --git a/sysprep/firstboot.ml b/sysprep/firstboot.ml
index 97cd8a9..c5296a1 100644
--- a/sysprep/firstboot.ml
+++ b/sysprep/firstboot.ml
@@ -28,14 +28,35 @@ let firstboot_dir = "/usr/lib/virt-sysprep"
let firstboot_sh = sprintf "\
#!/bin/sh -
+### BEGIN INIT INFO
+# Provides: virt-sysprep
+# Required-Start: $null
+# Should-Start: $all
+# Required-Stop: $null
+# Should-Stop: $all
+# Default-Start: 2 3 5
+# Default-Stop: 0 1 6
+# Short-Description: Start scripts to run once at next boot
+# Description: Start scripts to run once at next boot
+# These scripts run the first time the guest boots,
+# and then are deleted. Output or errors from the scripts
+# are written to ~root/virt-sysprep-firstboot.log.
+### END INIT INFO
+
d=%s/scripts
logfile=~root/virt-sysprep-firstboot.log
-for f in $d/* ; do
- echo '=== Running' $f '===' >>$logfile
- $f >>$logfile 2>&1
- rm $f
-done
+if test \"$1\" = \"start\"
+then
+ for f in $d/* ; do
+ if test -x \"$f\"
+ then
+ echo '=== Running' $f '===' >>$logfile
+ $f >>$logfile 2>&1
+ rm -f $f
+ fi
+ done
+fi
" firstboot_dir
let firstboot_service = sprintf "\
@@ -56,7 +77,7 @@ WantedBy=default.target
let failed fs =
ksprintf (fun msg -> failwith (s_"firstboot: failed: " ^ msg)) fs
-let rec install_service g root =
+let rec install_service g distro =
g#mkdir_p firstboot_dir;
g#mkdir_p (sprintf "%s/scripts" firstboot_dir);
g#write (sprintf "%s/firstboot.sh" firstboot_dir) firstboot_sh;
@@ -64,18 +85,18 @@ let rec install_service g root =
(* systemd, else assume sysvinit *)
if g#is_dir "/etc/systemd" then
- install_systemd_service g root
+ install_systemd_service g
else
- install_sysvinit_service g root
+ install_sysvinit_service g distro
(* Install the systemd firstboot service, if not installed already. *)
-and install_systemd_service g root =
+and install_systemd_service g =
g#write (sprintf "%s/firstboot.service" firstboot_dir) firstboot_service;
g#mkdir_p "/etc/systemd/system/default.target.wants";
g#ln_sf (sprintf "%s/firstboot.service" firstboot_dir)
"/etc/systemd/system/default.target.wants"
-and install_sysvinit_service g root =
+and install_sysvinit_redhat g =
g#mkdir_p "/etc/rc.d/rc2.d";
g#mkdir_p "/etc/rc.d/rc3.d";
g#mkdir_p "/etc/rc.d/rc5.d";
@@ -86,12 +107,51 @@ and install_sysvinit_service g root =
g#ln_sf (sprintf "%s/firstboot.sh" firstboot_dir)
"/etc/rc.d/rc5.d/99virt-sysprep-firstboot"
+(* Make firstboot.sh look like a runlevel script to avoid insserv warnings. *)
+and install_sysvinit_suse g =
+ g#mkdir_p "/etc/init.d/rc2.d";
+ g#mkdir_p "/etc/init.d/rc3.d";
+ g#mkdir_p "/etc/init.d/rc5.d";
+ g#ln_sf (sprintf "%s/firstboot.sh" firstboot_dir)
+ "/etc/init.d/virt-sysprep-firstboot";
+ g#ln_sf "../virt-sysprep-firstboot"
+ "/etc/init.d/rc2.d/S99virt-sysprep-firstboot";
+ g#ln_sf "../virt-sysprep-firstboot"
+ "/etc/init.d/rc3.d/S99virt-sysprep-firstboot";
+ g#ln_sf "../virt-sysprep-firstboot"
+ "/etc/init.d/rc5.d/S99virt-sysprep-firstboot"
+
+and install_sysvinit_debian g =
+ g#mkdir_p "/etc/init.d";
+ g#mkdir_p "/etc/rc2.d";
+ g#mkdir_p "/etc/rc3.d";
+ g#mkdir_p "/etc/rc5.d";
+ g#ln_sf (sprintf "%s/firstboot.sh" firstboot_dir)
+ "/etc/init.d/virt-sysprep-firstboot";
+ g#ln_sf "/etc/init.d/virt-sysprep-firstboot"
+ "/etc/rc2.d/S99virt-sysprep-firstboot";
+ g#ln_sf "/etc/init.d/virt-sysprep-firstboot"
+ "/etc/rc3.d/S99virt-sysprep-firstboot";
+ g#ln_sf "/etc/init.d/virt-sysprep-firstboot"
+ "/etc/rc5.d/S99virt-sysprep-firstboot"
+
+and install_sysvinit_service g distro =
+ match distro with
+ | ("fedora"|"rhel"|"centos"|"scientificlinux"|"redhat-based") ->
+ install_sysvinit_redhat g
+ | ("opensuse"|"sles"|"suse-based") ->
+ install_sysvinit_suse g
+ | "debian" ->
+ install_sysvinit_debian g
+ | _ ->
+ failed "guest type %s is not supported" distro
+
let add_firstboot_script g root id content =
let typ = g#inspect_get_type root in
let distro = g#inspect_get_distro root in
match typ, distro with
| "linux", _ ->
- install_service g root;
+ install_service g distro;
let t = Int64.of_float (Unix.time ()) in
let r = string_random8 () in
let filename = sprintf "%s/scripts/%Ld-%s-%s" firstboot_dir t r id in
--
1.7.12
10 years, 10 months
Some fixes for building the Debian package for 1.20.2
by Hilko Bengen
I needed to add a few patches to be able to build libguestfs 1.20.2
out of tree. Mostly srcdir/builddir issues -- I think that I had
posted something for building the daemon before.
As mentioned on IRC, I found that compiling (Ruby bindings) caused
config.h file shipped with the Ruby headers to be included rather than
${builddir}/config.h. This can be fixed because the relevant checks
can be performed in the extconf.rb script as well.
Cheers,
-Hilko
11 years, 8 months
virt-v2v F18 guest on F18 failure
by Ryan Barry
Run with LIBGUESTFS_ATTACH_METHOD=appliance
Fails with:
inspect_os: mount_ro: /dev/sda on / (options: 'ro'): mount: /dev/sda is already mounted or /sysroot busy at
/usr/share/perl5/vendor_perl/Sys/VirtConvert/GuestfsHandle.pm line 194.
virt-inspector works as expected
libguestfs-test-tool.log: http://pastebin.ca/2317900
virt-v2v.log: http://iaindb.pastebin.ca/2317938
Any suggestions?
--
while (!asleep) {sheep++;}
11 years, 8 months
[PATCH 0/7] Fix SELinux security contexts so we can access shared disks (RHBZ#912499).
by Richard W.M. Jones
https://bugzilla.redhat.com/show_bug.cgi?id=912499
(especially comments 7 & 10)
This patch set is the final fix so that we can access disks in use by
other guests when SELinux and sVirt are enabled.
Previously such disks were inaccessible because sVirt labels the disks
with a random SELinux label to prevent other instances of qemu from
being able to read them. So naturally the libguestfs appliance
(ie. qemu) cannot read these disks, not even if it is running as root.
The fix is to read that SELinux label from libvirt, then label the
libguestfs appliance the same way, so it can access the disks.
This is done by modifying the guestfs_add_domain call so that it reads
the label from libvirt, and passes the label through to the libvirt
back end which uses it when creating the appliance. It's actually a
bit more complex than this because we have to label the overlay disks
and the appliance disk correctly.
These patches are only the final part of the whole fix. I have
already pushed fixes to virt-df and virt-alignment-scan (34e77af1bf +
6e3aab2f0c + several dependent commits) so that these tools now use
just one appliance per guest, allowing us to label that appliance
correctly, because if an appliance is attached to multiple guests then
there is no single label that could be used.
As a result of the total complexity of this fix, I very much doubt
that it can be backported to 1.20.
Rich.
11 years, 8 months
parallelization
by Colin Walters
So Richard recently blogged about running many libguestfs mounts in
parallel.
I actually want parallelization in the other way; I use guestmount to
access a disk image, and my program is multithreaded. It does
read/write and most especially calls to link() and fdatasync() from
threads.
However, this all ends up being serialized, because the guestfsd
protocol is synchronous, and the daemon side is single-threaded.
Related to this, the qemu instance is always booted with only one
vCPU.
Have there been any thoughts on fixing this?
11 years, 8 months
Proposed API for guestconv library
by Matthew Booth
guestconv will be a new, re-usable library to perform guest OS
conversions when moving between hypervisors.
I've attached 3 files to this email which are relevant to the proposed
API.
guestconv.h is the proposed C binding.
example.c is the simplest possible usage of the API. It converts the
first detected root of the guest, accepting all defaults.
root.xml is an example description returned by inspection.
The first 2 should be self-explanatory, but root.xml requires more
explanation.
/guestconv/info contains generic information about the detected guest
OS. It can't be modified.
/guestconv/devices contains a list of detected devices. It can be
modified to affect the choice of driver for each device. Each element
has an id which uniquely identifies the specific device of a particular
type, and the selected driver. Available driver options are given as
child elements.
If an element is deleted from /guestconv/devices it will be
unconfigured.
There are a couple of potential issues I see with it myself:
Firstly, modifying XML isn't the cleanest API ever. However, I can't
think of a better solution which would be similarly flexible, and work
well with language bindings.
Secondly, it doesn't cover the case of an EC2->KVM conversion where you
will need to do additional transformations before conversion.
Specifically you'll need to add a partition table and boot loader.
You could potentially argue that this kind of transformation is out of
scope for the tool. However, it would introduce changes that you would
have to take into account during conversion due to altered device names.
I think we need to be able to support it without a major API change,
even if we don't support it initially. I'll try to post an update which
supports this, although ideas are welcome in the meantime.
Matt
11 years, 8 months
virt-edit Guestname /boot/grub/grub.conf error
by Sandeep Raman
Hello,
I get the following message on virt-edit Guestname /boot/grub/grub.conf.
I have executed the command.
guestmount –ro -a /var/lib/nova/instances/instance-00000001/disk -m
/dev/sda1 /mnt
guestmount -d instance-00000001 -i –ro /mnt
root@compute:~# virt-edit instance-00000001 /boot/grub/grub.conf
libguestfs: error: error: domain is a live virtual machine.
Writing to the disks of a running virtual machine can cause disk corruption.
Either use read-only access, or if the guest is running the guestfsd daemon
specify live access. In most libguestfs tools these options are –ro or
–live respectively. Consult the documentation for further information.
root@compute:~#
Please help how to get past this.
Regards,
Sandeep.
11 years, 8 months
