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f3b723cd8d
Restructure the pvscan code, and add new temporary files that list pvids in a VG, used for processing PVs that have no metadata. The new temp files, in /run/lvm/pvs_lookup/<vgname>, allow a proper pvscan --cache to be done on PVs that have no metadata. pvscan --cache <dev> is only supposed to read <dev>, but when <dev> has no metadata, this had not been possible. The command had to fall back to scanning all devices to read all VG metadata to get the list of all PVIDs needed to check for a complete VG. Now, the temp file can be used in place of reading metadata from all PVs on the system.
238 lines
5.9 KiB
Bash
238 lines
5.9 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2012 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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SKIP_WITH_LVMPOLLD=1
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RUNDIR="/run"
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test -d "$RUNDIR" || RUNDIR="/var/run"
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PVS_ONLINE_DIR="$RUNDIR/lvm/pvs_online"
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VGS_ONLINE_DIR="$RUNDIR/lvm/vgs_online"
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PVS_LOOKUP_DIR="$RUNDIR/lvm/pvs_lookup"
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# FIXME: kills logic for running system
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_clear_online_files() {
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# wait till udev is finished
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aux udev_wait
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rm -f "$PVS_ONLINE_DIR"/*
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rm -f "$VGS_ONLINE_DIR"/*
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rm -f "$PVS_LOOKUP_DIR"/*
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}
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. lib/inittest
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aux prepare_devs 8 16
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vgcreate $vg1 "$dev1" "$dev2"
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lvcreate -n $lv1 -l 4 -a n $vg1
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test -d "$PVS_ONLINE_DIR" || mkdir -p "$PVS_ONLINE_DIR"
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test -d "$VGS_ONLINE_DIR" || mkdir -p "$VGS_ONLINE_DIR"
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test -d "$PVS_LOOKUP_DIR" || mkdir -p "$PVS_LOOKUP_DIR"
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_clear_online_files
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# check pvscan with no args scans and activates all
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pvscan --cache -aay
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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_clear_online_files
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# first dev leaves vg incomplete and inactive,
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# and second dev completes vg and activates
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pvscan --cache -aay "$dev1"
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check lv_field $vg1/$lv1 lv_active ""
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pvscan --cache -aay "$dev2"
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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_clear_online_files
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# check that vg is activated when both devs
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# are scanned together
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pvscan --cache -aay "$dev1" "$dev2"
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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# check that a cache command without aay will
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# just record online state, and that a following
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# pvscan cache aay that does not record any new
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# online files will activate the vg
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_clear_online_files
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pvscan --cache "$dev1"
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check lv_field $vg1/$lv1 lv_active ""
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pvscan --cache "$dev2"
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check lv_field $vg1/$lv1 lv_active ""
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pvscan --cache -aay
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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# Set up tests where one dev has no metadata
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vgchange -an $vg1
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vgremove -ff $vg1
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pvremove "$dev1"
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pvremove "$dev2"
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pvcreate --metadatacopies 0 "$dev1"
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pvcreate --metadatacopies 1 "$dev2"
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vgcreate $vg1 "$dev1" "$dev2"
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lvcreate -n $lv1 -l 4 -a n $vg1
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_clear_online_files
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# test case where dev with metadata is scanned first
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pvscan --cache -aay "$dev2"
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check lv_field $vg1/$lv1 lv_active ""
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pvscan --cache -aay "$dev1"
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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_clear_online_files
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pvscan --cache -aay "$dev1"
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check lv_field $vg1/$lv1 lv_active ""
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pvscan --cache -aay "$dev2"
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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# use the --cache option to record a dev
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# is online without the -aay option to
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# activate until after they are online
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_clear_online_files
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pvscan --cache "$dev1"
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check lv_field $vg1/$lv1 lv_active ""
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pvscan --cache -aay "$dev2"
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check lv_field $vg1/$lv1 lv_active "active"
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lvchange -an $vg1
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vgremove -f $vg1
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# pvscan cache ignores pv that's not used
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pvcreate "$dev3"
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PVID3=`pvs $dev3 --noheading -o uuid | tr -d - | awk '{print $1}'`
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echo $PVID3
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not ls "$RUNDIR/lvm/pvs_online/$PVID3"
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pvscan --cache -aay "$dev3"
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ls "$RUNDIR/lvm/pvs_online"
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not ls "$RUNDIR/lvm/pvs_online/$PVID3"
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# pvscan cache ignores pv in a foreign vg
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if [ -e "/etc/machine-id" ]; then
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aux lvmconf "global/system_id_source = machineid"
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_clear_online_files
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vgcreate $vg2 "$dev3"
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lvcreate -an -n $lv2 -l1 $vg2
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pvscan --cache -aay "$dev3"
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ls "$RUNDIR/lvm/pvs_online/$PVID3"
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check lv_field $vg2/$lv2 lv_active "active"
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lvchange -an $vg2
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rm "$RUNDIR/lvm/pvs_online/$PVID3"
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# a vg without a system id is not foreign, not ignored
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vgchange -y --systemid "" "$vg2"
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_clear_online_files
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pvscan --cache -aay "$dev3"
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ls "$RUNDIR/lvm/pvs_online/$PVID3"
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check lv_field $vg2/$lv2 lv_active "active"
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lvchange -an $vg2
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rm "$RUNDIR/lvm/pvs_online/$PVID3"
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# make the vg foreign by assigning a system id different from ours
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vgchange -y --systemid "asdf" "$vg2"
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_clear_online_files
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pvscan --cache -aay "$dev3"
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not ls "$RUNDIR/lvm/pvs_online/$PVID3"
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lvs --foreign $vg2 > tmp
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cat tmp
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grep $lv2 tmp
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check lv_field $vg2/$lv2 lv_active "" --foreign
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fi
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# Test the case where pvscan --cache -aay (with no devs)
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# gets the final PV to complete the VG, where that final PV
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# does not hold VG metadata. In this case it needs to rely
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# on VG metadata that has been saved from a previously
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# scanned PV from the same VG.
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#
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# We can't control which order of devices pvscan will see,
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# so create several PVs without metadata surrounding one
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# PV with metadata, to make it likely that pvscan will
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# get a final PV without metadata.
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pvcreate --metadatacopies 0 "$dev4"
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pvcreate --metadatacopies 0 "$dev5"
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pvcreate --metadatacopies 1 "$dev6"
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pvcreate --metadatacopies 0 "$dev7"
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pvcreate --metadatacopies 0 "$dev8"
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vgcreate $vg3 "$dev4" "$dev5" "$dev6" "$dev7" "$dev8"
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lvcreate -n $lv1 -l 4 -a n $vg3
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_clear_online_files
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check lv_field $vg3/$lv1 lv_active ""
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pvscan --cache "$dev4"
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check lv_field $vg3/$lv1 lv_active ""
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pvscan --cache "$dev5"
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check lv_field $vg3/$lv1 lv_active ""
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pvscan --cache "$dev6"
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check lv_field $vg3/$lv1 lv_active ""
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pvscan --cache "$dev7"
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check lv_field $vg3/$lv1 lv_active ""
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pvscan --cache "$dev8"
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check lv_field $vg3/$lv1 lv_active ""
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pvscan --cache -aay
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check lv_field $vg3/$lv1 lv_active "active"
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lvchange -an $vg3
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# Test event activation when PV and dev size don't match
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vgremove -ff $vg3
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pvremove "$dev8"
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pvcreate -y --setphysicalvolumesize 8M "$dev8"
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PVID8=`pvs $dev8 --noheading -o uuid | tr -d - | awk '{print $1}'`
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echo $PVID8
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vgcreate $vg3 "$dev8"
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lvcreate -l1 -n $lv1 $vg3
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check lv_field $vg3/$lv1 lv_active "active"
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vgchange -an $vg3
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check lv_field $vg3/$lv1 lv_active ""
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_clear_online_files
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pvscan --cache -aay "$dev8"
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check lv_field $vg3/$lv1 lv_active "active"
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ls "$RUNDIR/lvm/pvs_online/$PVID8"
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ls "$RUNDIR/lvm/vgs_online/$vg3"
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vgchange -an $vg3
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vgremove -ff $vg3
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