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lvm2/spec/packages.inc
David Teigland 83fe6e720f device usage based on devices file 
The LVM devices file lists devices that lvm can use.  The default
file is /etc/lvm/devices/system.devices, and the lvmdevices(8)
command is used to add or remove device entries.  If the file
does not exist, or if lvm.conf includes use_devicesfile=0, then
lvm will not use a devices file.  When the devices file is in use,
the regex filter is not used, and the filter settings in lvm.conf
or on the command line are ignored.

LVM records devices in the devices file using hardware-specific
IDs, such as the WWID, and attempts to use subsystem-specific
IDs for virtual device types.  These device IDs are also written
in the VG metadata.  When no hardware or virtual ID is available,
lvm falls back using the unstable device name as the device ID.
When devnames are used, lvm performs extra scanning to find
devices if their devname changes, e.g. after reboot.

When proper device IDs are used, an lvm command will not look
at devices outside the devices file, but when devnames are used
as a fallback, lvm will scan devices outside the devices file
to locate PVs on renamed devices.  A config setting
search_for_devnames can be used to control the scanning for
renamed devname entries.

Related to the devices file, the new command option
--devices <devnames> allows a list of devices to be specified for
the command to use, overriding the devices file.  The listed
devices act as a sort of devices file in terms of limiting which
devices lvm will see and use.  Devices that are not listed will
appear to be missing to the lvm command.

Multiple devices files can be kept in /etc/lvm/devices, which
allows lvm to be used with different sets of devices, e.g.
system devices do not need to be exposed to a specific application,
and the application can use lvm on its own set of devices that are
not exposed to the system.  The option --devicesfile <filename> is
used to select the devices file to use with the command.  Without
the option set, the default system devices file is used.

Setting --devicesfile "" causes lvm to not use a devices file.

An existing, empty devices file means lvm will see no devices.

The new command vgimportdevices adds PVs from a VG to the devices
file and updates the VG metadata to include the device IDs.
vgimportdevices -a will import all VGs into the system devices file.

LVM commands run by dmeventd not use a devices file by default,
and will look at all devices on the system.  A devices file can
be created for dmeventd (/etc/lvm/devices/dmeventd.devices)  If
this file exists, lvm commands run by dmeventd will use it.

Internal implementaion:

- device_ids_read - read the devices file
  . add struct dev_use (du) to cmd->use_devices for each devices file entry
- dev_cache_scan - get /dev entries
  . add struct device (dev) to dev_cache for each device on the system
- device_ids_match - match devices file entries to /dev entries
  . match each du on cmd->use_devices to a dev in dev_cache, using device ID
  . on match, set du->dev, dev->id, dev->flags MATCHED_USE_ID
- label_scan - read lvm headers and metadata from devices
  . filters are applied, those that do not need data from the device
  . filter-deviceid skips devs without MATCHED_USE_ID, i.e.
    skips /dev entries that are not listed in the devices file
  . read lvm label from dev
  . filters are applied, those that use data from the device
  . read lvm metadata from dev
  . add info/vginfo structs for PVs/VGs (info is "lvmcache")
- device_ids_find_renamed_devs - handle devices with unstable devname ID
  where devname changed
  . this step only needed when devs do not have proper device IDs,
    and their dev names change, e.g. after reboot sdb becomes sdc.
  . detect incorrect match because PVID in the devices file entry
    does not match the PVID found when the device was read above
  . undo incorrect match between du and dev above
  . search system devices for new location of PVID
  . update devices file with new devnames for PVIDs on renamed devices
  . label_scan the renamed devs
- continue with command processing
2021-02-23 16:43:32 -06:00

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### MAIN PACKAGE (lvm2)
%post
%daemon_reload
%enable -s monitor -t service
%if %{have_service lvmpolld}
%enable -s lvmpolld -t socket
%endif
%preun
%if %{have_service lvmpolld}
%disable -s lvmpolld -t socket
%endif
%disable -s monitor -t service
%postun
%try_restart -s monitor -t service
%if %{have_service lvmpolld}
%try_restart -s lvmpolld -t service
%endif
if [ $1 = 0 ]; then
%daemon_reload
fi
%triggerun -- %{name} < 2.02.86-2
%{_bindir}/systemd-sysv-convert --save lvm2-monitor >/dev/null 2>&1 || :
/bin/systemctl --no-reload enable lvm2-monitor.service > /dev/null 2>&1 || :
/sbin/chkconfig --del lvm2-monitor > /dev/null 2>&1 || :
/bin/systemctl try-restart lvm2-monitor.service > /dev/null 2>&1 || :
# files in the main package
%files
%defattr(-,root,root,-)
%doc COPYING COPYING.LIB INSTALL README VERSION WHATS_NEW
%doc doc/lvm_fault_handling.txt
%{_sbindir}/fsadm
%{_sbindir}/lvchange
%{_sbindir}/lvconvert
%{_sbindir}/lvcreate
%{_sbindir}/lvdisplay
%{_sbindir}/lvextend
%{_sbindir}/lvm
%{_sbindir}/lvmconfig
%{_sbindir}/lvmdevices
%{_sbindir}/lvmdiskscan
%{_sbindir}/lvmdump
%{_sbindir}/lvmsadc
%{_sbindir}/lvmsar
%{_sbindir}/lvreduce
%{_sbindir}/lvremove
%{_sbindir}/lvrename
%{_sbindir}/lvresize
%{_sbindir}/lvs
%{_sbindir}/lvscan
%{_sbindir}/pvchange
%{_sbindir}/pvck
%{_sbindir}/pvcreate
%{_sbindir}/pvdisplay
%{_sbindir}/pvmove
%{_sbindir}/pvremove
%{_sbindir}/pvresize
%{_sbindir}/pvs
%{_sbindir}/pvscan
%{_sbindir}/vgcfgbackup
%{_sbindir}/vgcfgrestore
%{_sbindir}/vgchange
%{_sbindir}/vgck
%{_sbindir}/vgconvert
%{_sbindir}/vgcreate
%{_sbindir}/vgdisplay
%{_sbindir}/vgexport
%{_sbindir}/vgextend
%{_sbindir}/vgimport
%{_sbindir}/vgimportclone
%{_sbindir}/vgimportdevices
%{_sbindir}/vgmerge
%{_sbindir}/vgmknodes
%{_sbindir}/vgreduce
%{_sbindir}/vgremove
%{_sbindir}/vgrename
%{_sbindir}/vgs
%{_sbindir}/vgscan
%{_sbindir}/vgsplit
%if %{have_service lvmpolld}
%{_sbindir}/lvmpolld
%endif
%{_mandir}/man5/lvm.conf.5.gz
%{_mandir}/man7/lvmsystemid.7.gz
%{_mandir}/man7/lvmreport.7.gz
%{_mandir}/man7/lvmraid.7.gz
%{_mandir}/man8/fsadm.8.gz
%{_mandir}/man8/lvchange.8.gz
%{_mandir}/man8/lvconvert.8.gz
%{_mandir}/man8/lvcreate.8.gz
%{_mandir}/man8/lvdisplay.8.gz
%{_mandir}/man8/lvextend.8.gz
%{_mandir}/man8/lvm-config.8.gz
%{_mandir}/man8/lvm-dumpconfig.8.gz
%{_mandir}/man8/lvm.8.gz
%if %{enable_systemd}
%{_mandir}/man8/lvm2-activation-generator.8.gz
%endif
%{_mandir}/man8/lvmconfig.8.gz
%{_mandir}/man8/lvmdevices.8.gz
%{_mandir}/man8/lvmdiskscan.8.gz
%{_mandir}/man8/lvmdump.8.gz
%{_mandir}/man8/lvm-fullreport.8.gz
%{_mandir}/man8/lvmsadc.8.gz
%{_mandir}/man8/lvmsar.8.gz
%{_mandir}/man8/lvreduce.8.gz
%{_mandir}/man8/lvremove.8.gz
%{_mandir}/man8/lvrename.8.gz
%{_mandir}/man8/lvresize.8.gz
%{_mandir}/man8/lvs.8.gz
%{_mandir}/man8/lvscan.8.gz
%{_mandir}/man8/pvchange.8.gz
%{_mandir}/man8/pvck.8.gz
%{_mandir}/man8/pvcreate.8.gz
%{_mandir}/man8/pvdisplay.8.gz
%{_mandir}/man8/pvmove.8.gz
%{_mandir}/man8/pvremove.8.gz
%{_mandir}/man8/pvresize.8.gz
%{_mandir}/man8/pvs.8.gz
%{_mandir}/man8/pvscan.8.gz
%{_mandir}/man8/vgcfgbackup.8.gz
%{_mandir}/man8/vgcfgrestore.8.gz
%{_mandir}/man8/vgchange.8.gz
%{_mandir}/man8/vgck.8.gz
%{_mandir}/man8/vgconvert.8.gz
%{_mandir}/man8/vgcreate.8.gz
%{_mandir}/man8/vgdisplay.8.gz
%{_mandir}/man8/vgexport.8.gz
%{_mandir}/man8/vgextend.8.gz
%{_mandir}/man8/vgimport.8.gz
%{_mandir}/man8/vgimportclone.8.gz
%{_mandir}/man8/vgimportdevices.8.gz
%{_mandir}/man8/vgmerge.8.gz
%{_mandir}/man8/vgmknodes.8.gz
%{_mandir}/man8/vgreduce.8.gz
%{_mandir}/man8/vgremove.8.gz
%{_mandir}/man8/vgrename.8.gz
%{_mandir}/man8/vgs.8.gz
%{_mandir}/man8/vgscan.8.gz
%{_mandir}/man8/vgsplit.8.gz
%if %{have_with cache}
%{_mandir}/man7/lvmcache.7.gz
%endif
%if %{have_with thin}
%{_mandir}/man7/lvmthin.7.gz
%endif
%if %{have_service lvmpolld}
%{_mandir}/man8/lvmpolld.8.gz
%{_mandir}/man8/lvm-lvpoll.8.gz
%endif
%if %{have_with vdo}
%{_mandir}/man7/lvmvdo.7.gz
%endif
%if %{enable_udev}
%{_udevdir}/11-dm-lvm.rules
%{_udevdir}/69-dm-lvm-metad.rules
%endif
%dir %{_sysconfdir}/lvm
%ghost %{_sysconfdir}/lvm/cache/.cache
%attr(644, -, -) %config(noreplace) %verify(not md5 mtime size) %{_sysconfdir}/lvm/lvm.conf
%attr(644, -, -) %config(noreplace) %verify(not md5 mtime size) %{_sysconfdir}/lvm/lvmlocal.conf
%dir %{_sysconfdir}/lvm/profile
%{_sysconfdir}/lvm/profile/command_profile_template.profile
%{_sysconfdir}/lvm/profile/metadata_profile_template.profile
%{_sysconfdir}/lvm/profile/thin-generic.profile
%{_sysconfdir}/lvm/profile/thin-performance.profile
%{_sysconfdir}/lvm/profile/cache-mq.profile
%{_sysconfdir}/lvm/profile/cache-smq.profile
%{_sysconfdir}/lvm/profile/lvmdbusd.profile
%if %{have_with vdo}
%{_sysconfdir}/lvm/profile/vdo-small.profile
%endif
%dir %{_sysconfdir}/lvm/backup
%dir %{_sysconfdir}/lvm/cache
%dir %{_sysconfdir}/lvm/archive
%dir %{_default_locking_dir}
%dir %{_default_run_dir}
%if %{enable_systemd}
%{_tmpfilesdir}/%{name}.conf
%{_unitdir}/blk-availability.service
%{_unitdir}/lvm2-monitor.service
%{_unitdir}/lvm2-pvscan@.service
%attr(555, -, -) %{_prefix}/lib/systemd/system-generators/lvm2-activation-generator
%if %{have_service lvmpolld}
%{_unitdir}/lvm2-lvmpolld.service
%{_unitdir}/lvm2-lvmpolld.socket
%endif
%else
%{_sysconfdir}/rc.d/init.d/blk-availability
%{_sysconfdir}/rc.d/init.d/lvm2-monitor
%if %{have_service lvmpolld}
%{_sysconfdir}/rc.d/init.d/lvm2-lvmpolld
%endif
%endif
##############################################################################
# Library and Development subpackages
##############################################################################
%package devel
Summary: Development libraries and headers
Group: Development/Libraries
License: LGPLv2
Requires: %{name} = %{version}-%{release}
Requires: device-mapper-devel >= %{device_mapper_version}-%{release}
Requires: device-mapper-event-devel >= %{device_mapper_version}-%{release}
Requires: pkgconfig
%description devel
This package contains files needed to develop applications that use
the lvm2 libraries.
%files devel
%defattr(-,root,root,-)
%{_libdir}/liblvm2cmd.so
%{_includedir}/lvm2cmd.h
%{_libdir}/libdevmapper-event-lvm2.so
%package libs
Summary: Shared libraries for lvm2
License: LGPLv2
Group: System Environment/Libraries
Requires: device-mapper-event >= %{device_mapper_version}-%{release}
%description libs
This package contains shared lvm2 libraries for applications.
%post libs -p /sbin/ldconfig
%postun libs -p /sbin/ldconfig
%files libs
%defattr(-,root,root,-)
%attr(755,root,root) %{_libdir}/liblvm2cmd.so.*
%attr(755,root,root) %{_libdir}/libdevmapper-event-lvm2.so.*
%dir %{_libdir}/device-mapper
%{_libdir}/device-mapper/libdevmapper-event-lvm2mirror.so
%{_libdir}/device-mapper/libdevmapper-event-lvm2snapshot.so
%{_libdir}/device-mapper/libdevmapper-event-lvm2raid.so
%if %{have_with thin}
%{_libdir}/device-mapper/libdevmapper-event-lvm2thin.so
%{_libdir}/libdevmapper-event-lvm2thin.so
%endif
%{_libdir}/libdevmapper-event-lvm2mirror.so
%{_libdir}/libdevmapper-event-lvm2snapshot.so
%{_libdir}/libdevmapper-event-lvm2raid.so
%if %{have_with vdo}
%{_libdir}/device-mapper/libdevmapper-event-lvm2vdo.so
%{_libdir}/libdevmapper-event-lvm2vdo.so
%endif
##############################################################################
# LVM locking daemon
##############################################################################
%if %{have_service lvmlockd}
%package lockd
Summary: LVM locking daemon
Group: System Environment/Base
Requires: lvm2 = %{version}-%{release}
%if %{enable_lvmlockd_dlm}
Requires: dlm-lib >= %{dlm_version}
%endif
%if %{enable_lvmlockd_sanlock}
Requires: sanlock-lib >= %{sanlock_version}
%endif
Requires(post): systemd-units
Requires(preun): systemd-units
Requires(postun): systemd-units
%description lockd
LVM commands use lvmlockd to coordinate access to shared storage.
%post lockd
%daemon_reload
%enable -s lvmlockd -t service
%preun lockd
%disable -s lvmlockd -t service
%postun lockd
if [ $1 = 0 ]; then
%daemon_reload
fi
%files lockd
%{_sbindir}/lvmlockd
%{_sbindir}/lvmlockctl
%{_mandir}/man8/lvmlockd.8.gz
%{_mandir}/man8/lvmlockctl.8.gz
%dir %{_default_locking_dir}
%{_unitdir}/lvmlockd.service
%{_unitdir}/lvmlocks.service
%endif
##############################################################################
# Cluster mirror subpackage
##############################################################################
%if %{enable_cmirror}
%package -n cmirror
Summary: Daemon for device-mapper-based clustered mirrors
Group: System Environment/Base
Requires(post): chkconfig
Requires(preun): chkconfig
Requires: corosync >= %{corosync_version}
Requires: device-mapper >= %{device_mapper_version}-%{release}
%description -n cmirror
Daemon providing device-mapper-based mirrors in a shared-storage cluster.
%post -n cmirror
%daemon_reload
%enable -s cmirrord -t service
%preun -n cmirror
%disable -s cmirrord -t service
%postun -n cmirror
%try_restart -s cmirrord -t service
if [ $1 = 0 ]; then
%daemon_reload
fi
%files -n cmirror
%defattr(-,root,root,-)
%attr(755,root,root) /usr/sbin/cmirrord
%{_mandir}/man8/cmirrord.8.gz
%if %{enable_systemd}
%{_unitdir}/lvm2-cmirrord.service
%else
%{_sysconfdir}/rc.d/init.d/cmirrord
%endif
%endif
##############################################################################
# LVM D-Bus daemon
##############################################################################
%if %{enable_dbusd}
%package dbusd
Summary: LVM2 D-Bus daemon
License: GPLv2
Group: System Environment/Base
Requires: lvm2 >= %{version}-%{release}
Requires: dbus
Requires: python3-dbus
Requires: python3-pyudev
Requires: python3-gobject-base
Requires(post): systemd-units >= %{systemd_version}
Requires(preun): systemd-units >= %{systemd_version}
Requires(postun): systemd-units >= %{systemd_version}
%description dbusd
Daemon for access to LVM2 functionality through a D-Bus interface.
%post dbusd
%systemd_post lvm2-lvmdbusd.service
%preun dbusd
%systemd_preun lvm2-lvmdbusd.service
%postun dbusd
%systemd_postun lvm2-lvmdbusd.service
%files dbusd
%defattr(555,root,root,-)
%{_sbindir}/lvmdbusd
%defattr(444,root,root,-)
%{_sysconfdir}/dbus-1/system.d/com.redhat.lvmdbus1.conf
%{_datadir}/dbus-1/system-services/com.redhat.lvmdbus1.service
%{_mandir}/man8/lvmdbusd.8.gz
%{_unitdir}/lvm2-lvmdbusd.service
%{python3_sitelib}/lvmdbusd/*
%endif
##############################################################################
# Testsuite subpackage
##############################################################################
%if %{enable_testsuite}
%package testsuite
Summary: LVM2 Testsuite
License: LGPLv2
Group: Development
%description testsuite
An extensive functional testsuite for LVM2.
%files testsuite
%defattr(-,root,root,-)
%{_datadir}/lvm2-testsuite/
%{_libexecdir}/lvm2-testsuite/
%{_bindir}/lvm2-testsuite
%endif
##############################################################################
# Device-mapper subpackages
##############################################################################
%package -n device-mapper
Summary: Device mapper utility
Version: %{device_mapper_version}
Release: %{release}
License: GPLv2
Group: System Environment/Base
URL: http://sources.redhat.com/dm
Requires: device-mapper-libs = %{device_mapper_version}-%{release}
Requires: util-linux >= 2.15
%maybe Requires: %{req_udev}
%if %{enable_udev}
# We need dracut to install required udev rules if udev_sync
# feature is turned on so we don't lose required notifications.
Conflicts: dracut < 002-18
%endif
%description -n device-mapper
This package contains the supporting userspace utility, dmsetup,
for the kernel device-mapper.
%files -n device-mapper
%defattr(-,root,root,-)
%doc COPYING COPYING.LIB WHATS_NEW_DM VERSION_DM README INSTALL
%{_sbindir}/blkdeactivate
%attr(755,root,root) %{_sbindir}/dmsetup
%{_sbindir}/dmstats
%{_mandir}/man8/blkdeactivate.8.gz
%{_mandir}/man8/dmsetup.8.gz
%{_mandir}/man8/dmstats.8.gz
%if %{enable_dmfilemapd}
%{_sbindir}/dmfilemapd
%{_mandir}/man8/dmfilemapd.8.gz
%endif
%if %{enable_udev}
%doc udev/12-dm-permissions.rules
%dir %{_udevbasedir}
%dir %{_udevdir}
%{_udevdir}/10-dm.rules
%{_udevdir}/13-dm-disk.rules
%{_udevdir}/95-dm-notify.rules
%endif
%package -n device-mapper-devel
Summary: Development libraries and headers for device-mapper
Version: %{device_mapper_version}
Release: %{release}
License: LGPLv2
Group: Development/Libraries
Requires: device-mapper = %{device_mapper_version}-%{release}
Requires: pkgconfig
%description -n device-mapper-devel
This package contains files needed to develop applications that use
the device-mapper libraries.
%files -n device-mapper-devel
%defattr(-,root,root,-)
%{_libdir}/libdevmapper.so
%{_includedir}/libdevmapper.h
%{_libdir}/pkgconfig/devmapper.pc
%package -n device-mapper-libs
Summary: Device-mapper shared library
Version: %{device_mapper_version}
Release: %{release}
License: LGPLv2
Group: System Environment/Libraries
Requires: device-mapper = %{device_mapper_version}-%{release}
%description -n device-mapper-libs
This package contains the device-mapper shared library, libdevmapper.
%post -n device-mapper-libs -p /sbin/ldconfig
%postun -n device-mapper-libs -p /sbin/ldconfig
%files -n device-mapper-libs
%attr(755,root,root) %{_libdir}/libdevmapper.so.*
%package -n device-mapper-event
Summary: Device-mapper event daemon
Group: System Environment/Base
Version: %{device_mapper_version}
Release: %{release}
Requires: device-mapper = %{device_mapper_version}-%{release}
Requires: device-mapper-event-libs = %{device_mapper_version}-%{release}
%if %{enable_systemd}
Requires(post): systemd-units
Requires(preun): systemd-units
Requires(postun): systemd-units
%endif
%description -n device-mapper-event
This package contains the dmeventd daemon for monitoring the state
of device-mapper devices.
%post -n device-mapper-event
%daemon_reload
%if %{enable_systemd}
systemctl preset dm-event.socket > /dev/null 2>&1 || :
%endif
%preun -n device-mapper-event
%if %{enable_systemd}
if [ $1 = 0 ]; then
systemctl --no-reload disable dm-event.service dm-event.socket > /dev/null 2>&1 || :
systemctl stop dm-event.service dm-event.socket> /dev/null 2>&1 || :
fi
%endif
%postun -n device-mapper-event
if [ $1 = 0 ]; then
%daemon_reload
fi
%posttrans -n device-mapper-event
if [ -e %{_default_pid_dir}/dmeventd.pid ]; then
%{_sbindir}/dmeventd -R || echo "Failed to restart dmeventd daemon. Please, try manual restart."
fi
%files -n device-mapper-event
%defattr(-,root,root,-)
%{_sbindir}/dmeventd
%{_mandir}/man8/dmeventd.8.gz
%if %{enable_systemd}
%{_unitdir}/dm-event.socket
%{_unitdir}/dm-event.service
%endif
%package -n device-mapper-event-libs
Summary: Device-mapper event daemon shared library
Version: %{device_mapper_version}
Release: %{release}
License: LGPLv2
Group: System Environment/Libraries
%description -n device-mapper-event-libs
This package contains the device-mapper event daemon shared library,
libdevmapper-event.
%post -n device-mapper-event-libs -p /sbin/ldconfig
%postun -n device-mapper-event-libs -p /sbin/ldconfig
%files -n device-mapper-event-libs
%attr(755,root,root) %{_libdir}/libdevmapper-event.so.*
%package -n device-mapper-event-devel
Summary: Development libraries and headers for the device-mapper event daemon
Version: %{device_mapper_version}
Release: %{release}
License: LGPLv2
Group: Development/Libraries
Requires: device-mapper-event = %{device_mapper_version}-%{release}
Requires: pkgconfig
%description -n device-mapper-event-devel
This package contains files needed to develop applications that use
the device-mapper event library.
%files -n device-mapper-event-devel
%defattr(-,root,root,-)
%{_libdir}/libdevmapper-event.so
%{_includedir}/libdevmapper-event.h
%{_libdir}/pkgconfig/devmapper-event.pc
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