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libvirt/tools/Makefile.am
Daniel P. Berrange 97e4f21782 Support automatic creation of leases for disks in sanlock 
The current sanlock plugin requires a central management
application to manually add <lease> elements to each guest,
to protect resources that are assigned to it (eg writable
disks). This makes the sanlock plugin useless for usage
in more ad hoc deployment environments where there is no
central authority to associate disks with leases.

This patch adds a mode where the sanlock plugin will
automatically create leases for each assigned read-write
disk, using a md5 checksum of the fully qualified disk
path. This can work pretty well if guests are using
stable disk paths for block devices eg /dev/disk/by-path/XXXX
symlinks, or if all hosts have NFS volumes mounted in
a consistent pattern.

The plugin will create one lockspace for managing disks
with filename /var/lib/libvirt/sanlock/__LIBVIRT__DISKS__.
For each VM disks, there will be another file to hold
a lease /var/lib/libvirt/sanlock/5903e5d25e087e60a20fe4566fab41fd
Each VM disk lease is usually 1 MB in size. The script
virt-sanlock-cleanup should be run periodically to remove
unused lease files from the lockspace directory.

To make use of this capability the admin will need to do
several tasks:

 - Mount an NFS volume (or other shared filesystem)
   on /var/lib/libvirt/sanlock
 - Configure 'host_id' in /etc/libvirt/qemu-sanlock.conf
   with a unique value for each host with the same NFS
   mount
 - Toggle the 'auto_disk_leases' parameter in qemu-sanlock.conf

Technically the first step can be skipped, in which case
sanlock will only protect against 2 vms on the same host
using the same disk (or the same VM being started twice
due to error by libvirt).

* src/locking/libvirt_sanlock.aug,
  src/locking/sanlock.conf,
  src/locking/test_libvirt_sanlock.aug: Add config params
  for configuring auto lease setup
* libvirt.spec.in: Add virt-sanlock-cleanup program, man
  page
* tools/virt-sanlock-cleanup.in: Script to purge unused
  disk resource lease files
2011-06-28 18:18:06 +01:00

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5.3 KiB
Makefile
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POD2MAN = pod2man -c "Virtualization Support" -r "$(PACKAGE)-$(VERSION)"
ICON_FILES = \
libvirt_win_icon_16x16.ico \
libvirt_win_icon_32x32.ico \
libvirt_win_icon_48x48.ico \
libvirt_win_icon_64x64.ico \
virsh_win_icon.rc
EXTRA_DIST = \
$(ICON_FILES) \
virt-xml-validate.in \
virt-pki-validate.in \
virt-sanlock-cleanup.in \
virsh.pod \
libvirt-guests.init.sh \
libvirt-guests.sysconf
bin_SCRIPTS = virt-xml-validate virt-pki-validate
bin_PROGRAMS = virsh
if HAVE_SANLOCK
sbin_SCRIPTS = virt-sanlock-cleanup
endif
dist_man1_MANS = virt-xml-validate.1 virt-pki-validate.1 virsh.1
if HAVE_SANLOCK
dist_man8_MANS = virt-sanlock-cleanup.8
endif
virt-xml-validate: virt-xml-validate.in Makefile
$(AM_V_GEN)sed -e 's,[@]SCHEMADIR@,$(pkgdatadir)/schemas,' < $< > $@ \
|| (rm $@ && exit 1) && chmod +x $@
virt-xml-validate.1: virt-xml-validate.in
$(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
virt-pki-validate: virt-pki-validate.in Makefile
$(AM_V_GEN)sed -e 's,[@]SYSCONFDIR@,$(sysconfdir),' < $< > $@ \
|| (rm $@ && exit 1) && chmod +x $@
virt-pki-validate.1: virt-pki-validate.in
$(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
virt-sanlock-cleanup: virt-sanlock-cleanup.in Makefile
$(AM_V_GEN)sed -e 's,[@]SYSCONFDIR@,$(sysconfdir),' \
-e 's,[@]LOCALSTATEDIR@,$(localstatedir),' < $< > $@ \
|| (rm $@ && exit 1) && chmod +x $@
virt-sanlock-cleanup.8: virt-sanlock-cleanup.in
$(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
virsh_SOURCES = \
console.c console.h \
virsh.c
virsh_LDFLAGS = $(WARN_LDFLAGS) $(COVERAGE_LDFLAGS)
virsh_LDADD = \
$(STATIC_BINARIES) \
$(WARN_CFLAGS) \
../src/libvirt.la \
../src/libvirt-qemu.la \
../gnulib/lib/libgnu.la \
$(LIBXML_LIBS) \
$(VIRSH_LIBS)
virsh_CFLAGS = \
-I$(top_srcdir)/gnulib/lib -I../gnulib/lib \
-I../include -I$(top_srcdir)/include \
-I$(top_srcdir)/src \
-I$(top_srcdir)/src/util \
-I$(top_srcdir) \
$(WARN_CFLAGS) \
$(COVERAGE_CFLAGS) \
$(LIBXML_CFLAGS) \
$(READLINE_CFLAGS)
BUILT_SOURCES = virsh-net-edit.c virsh-pool-edit.c
virsh-net-edit.c: virsh.c Makefile.am
$(AM_V_GEN)rm -f $@-tmp && \
echo '/* Automatically generated from: $^ */' > $@-tmp && \
echo 'static bool' >> $@-tmp && \
awk '/^cmdEdit/, /^}/' $< \
| sed -e 's/domain/network/g' \
-e 's/Domain/Network/g' \
-e 's/cmdEdit/cmdNetworkEdit/g' \
-e 's/dom/network/g' \
-e 's/int flags.*/int flags = 0;/g' \
>> $@-tmp && \
chmod a-w $@-tmp && \
rm -f $@ && \
mv $@-tmp $@
virsh-pool-edit.c: virsh.c Makefile.am
$(AM_V_GEN)rm -f $@-tmp && \
echo '/* Automatically generated from: $^ */' > $@-tmp && \
echo 'static bool' >> $@-tmp && \
awk '/^cmdEdit/, /^}/' $< \
| sed -e 's/domain/pool/g' \
-e 's/vshCommandOptDomain/vshCommandOptPool/g' \
-e 's/Domain %s/Pool %s/g' \
-e 's/(ctl, cmd, NULL);/(ctl, cmd, "pool", NULL);/' \
-e 's/Domain/StoragePool/g' \
-e 's/cmdEdit/cmdPoolEdit/g' \
-e 's/\(virStoragePoolDefineXML.*\));/\1, 0);/' \
-e 's/dom/pool/g' \
-e 's/int flags.*/int flags = 0;/g' \
>> $@-tmp && \
chmod a-w $@-tmp && \
rm -f $@ && \
mv $@-tmp $@
if WITH_WIN_ICON
virsh_LDADD += virsh_win_icon.$(OBJEXT)
# Before you edit virsh_win_icon.rc, please note the following
# limitations of the resource file format:
#
# (1) '..' is not permitted in the icon filename field.
# (2) '-' is not permitted in the icon filename field.
# (3) Comments are not permitted in the file.
#
# Windows appears to choose the first <= 32x32 icon it finds
# in the resource file. Therefore you should list the available
# icons from largest to smallest, and make sure that the 32x32
# icon is the most legible.
#
# Windows .ICO is a special MS-only format. GIMP and other
# tools can write it. However there are several variations,
# and Windows seems to do its own colour quantization. More
# information is needed in this area.
virsh_win_icon.$(OBJEXT): virsh_win_icon.rc
$(AM_V_GEN)$(WINDRES) \
--input-format rc --input $< \
--output-format coff --output $@
endif
virsh.1: virsh.pod
$(AM_V_GEN)$(POD2MAN) $< $(srcdir)/$@
install-data-local: install-init
uninstall-local: uninstall-init
if LIBVIRT_INIT_SCRIPT_RED_HAT
install-init: libvirt-guests.init
mkdir -p $(DESTDIR)$(sysconfdir)/rc.d/init.d
$(INSTALL_SCRIPT) libvirt-guests.init \
$(DESTDIR)$(sysconfdir)/rc.d/init.d/libvirt-guests
mkdir -p $(DESTDIR)$(sysconfdir)/sysconfig
$(INSTALL_DATA) $(srcdir)/libvirt-guests.sysconf \
$(DESTDIR)$(sysconfdir)/sysconfig/libvirt-guests
uninstall-init:
rm -f $(DESTDIR)$(sysconfdir)/rc.d/init.d/libvirt-guests \
$(DESTDIR)$(sysconfdir)/sysconfig/libvirt-guests
BUILT_SOURCES += libvirt-guests.init
libvirt-guests.init: libvirt-guests.init.sh $(top_builddir)/config.status
$(AM_V_GEN)sed \
-e 's!\@PACKAGE\@!$(PACKAGE)!g' \
-e 's!\@bindir\@!$(bindir)!g' \
-e 's!\@localedir\@!$(localedir)!g' \
-e 's!\@localstatedir\@!$(localstatedir)!g' \
-e 's!\@sbindir\@!$(sbindir)!g' \
-e 's!\@sysconfdir\@!$(sysconfdir)!g' \
< $< > $@-t && \
chmod a+x $@-t && \
mv $@-t $@
else
install-init:
uninstall-init:
libvirt-guests.init:
endif # LIBVIRT_INIT_SCRIPT_RED_HAT
CLEANFILES = $(bin_SCRIPTS)
CLEANFILES += *.gcov .libs/*.gcda .libs/*.gcno *.gcno *.gcda *.i *.s
MAINTAINERCLEANFILES = $(dist_man1_MANS)
DISTCLEANFILES = $(BUILT_SOURCES)
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