- Redhat updated lvm udev rule 69-dm-lvm.rules to only work with systemd - Update 69-dm-lvm.rules to work with IPFire based on input from @Daniel of what worked to mount an existing lvm volume

Suggested-by: Daniel Weismüller daniel.weismueller@ipfire.org Signed-off-by: Adolf Belka adolf.belka@ipfire.org --- config/lvm/69-dm-lvm.rules | 83 ++++++++++++++++++++++++++++++++++++++ lfs/lvm2 | 2 + 2 files changed, 85 insertions(+) create mode 100644 config/lvm/69-dm-lvm.rules

diff --git a/config/lvm/69-dm-lvm.rules b/config/lvm/69-dm-lvm.rules new file mode 100644 index 000000000..a1c6be14f --- /dev/null +++ b/config/lvm/69-dm-lvm.rules @@ -0,0 +1,83 @@ +# Copyright (C) 2012,2021 Red Hat, Inc. All rights reserved. +# +# This file is part of LVM. +# +# This rule requires blkid to be called on block devices before so only devices +# used as LVM PVs are processed (ID_FS_TYPE="LVM2_member"). + +SUBSYSTEM!="block", GOTO="lvm_end" + + +ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", GOTO="lvm_end" + +# Only process devices already marked as a PV - this requires blkid to be called before. +ENV{ID_FS_TYPE}!="LVM2_member", GOTO="lvm_end" +ENV{DM_MULTIPATH_DEVICE_PATH}=="1", GOTO="lvm_end" +ACTION=="remove", GOTO="lvm_end" + +# Create /dev/disk/by-id/lvm-pv-uuid-<PV_UUID> symlink for each PV +ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-id/lvm-pv-uuid-$env{ID_FS_UUID_ENC}" + +# If the PV is a special device listed below, scan only if the device is +# properly activated. These devices are not usable after an ADD event, +# but they require an extra setup and they are ready after a CHANGE event. +# Also support coldplugging with ADD event but only if the device is already +# properly activated. +# This logic should be eventually moved to rules where those particular +# devices are processed primarily (MD and loop). + +# DM device: +KERNEL!="dm-[0-9]*", GOTO="next" +ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", ENV{DM_ACTIVATION}=="1", GOTO="lvm_scan" +GOTO="lvm_end" + +# MD device: +LABEL="next" +KERNEL!="md[0-9]*", GOTO="next" +IMPORT{db}="LVM_MD_PV_ACTIVATED" +ACTION=="add", ENV{LVM_MD_PV_ACTIVATED}=="1", GOTO="lvm_scan" +ACTION=="change", ENV{LVM_MD_PV_ACTIVATED}!="1", TEST=="md/array_state", ENV{LVM_MD_PV_ACTIVATED}="1", GOTO="lvm_scan" +ACTION=="add", KERNEL=="md[0-9]*p[0-9]*", GOTO="lvm_scan" +GOTO="lvm_end" + +# Loop device: +LABEL="next" +KERNEL!="loop[0-9]*", GOTO="next" +ACTION=="add", ENV{LVM_LOOP_PV_ACTIVATED}=="1", GOTO="lvm_scan" +ACTION=="change", ENV{LVM_LOOP_PV_ACTIVATED}!="1", TEST=="loop/backing_file", ENV{LVM_LOOP_PV_ACTIVATED}="1", GOTO="lvm_scan" +GOTO="lvm_end" + +LABEL="next" +ACTION!="add", GOTO="lvm_end" + +LABEL="lvm_scan" + +# pvscan will check if this device completes a VG, +# i.e. all PVs in the VG are now present with the +# arrival of this PV. If so, it prints to stdout: +# LVM_VG_NAME_COMPLETE='foo' +# +# When the VG is complete it can be activated, so +# vgchange -aay <vgname> is run. It is run via +# systemd since it can take longer to run than +# udev wants to block when processing rules. +# (if there are hundreds of LVs to activate, +# the vgchange can take many seconds.) +# +# pvscan only reads the single device specified, +# and uses temp files under /run/lvm to check if +# other PVs in the VG are present. +# +# If event_activation=0 in lvm.conf, this pvscan +# (using checkcomplete) will do nothing, so that +# no event-based autoactivation will be happen. +# +# TODO: adjust the output of vgchange -aay so that +# it's better suited to appearing in the journal. + +IMPORT{program}="/usr/sbin/lvm pvscan --cache --listvg --checkcomplete --vgonline --autoactivation event --udevoutput --journal=output $env{DEVNAME}" +ENV{LVM_VG_NAME_COMPLETE}=="?*", RUN+="/usr/sbin/lvm vgchange -aay --autoactivation event $env{LVM_VG_NAME_COMPLETE}" +GOTO="lvm_end" + +LABEL="lvm_end" + diff --git a/lfs/lvm2 b/lfs/lvm2 index 2f1e921fc..4e2bd6235 100644 --- a/lfs/lvm2 +++ b/lfs/lvm2 @@ -85,5 +85,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects)) --enable-udev_sync cd $(DIR_APP) && make $(MAKETUNING) cd $(DIR_APP) && make install + # copy the tailored lvm udev rules file that will mount volumes without systemd + cp -rf $(DIR_SRC)/config/lvm/69-dm-lvm.rules /lib/udev/rules.d/ @rm -rf $(DIR_APP) @$(POSTBUILD)