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494372b4ee
Explicit wwid's from these sections control whether the same wwid in /etc/multipath/wwids is recognized as a multipath component. Other non-wwid keywords are not used, and may require disabling the use of the multipath wwids file in lvm.conf.
172 lines
3.7 KiB
Bash
172 lines
3.7 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2021 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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test_description='using multipath blacklist'
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SKIP_WITH_LVMPOLLD=1
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SKIP_WITH_LVMLOCKD=1
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. lib/inittest
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# FIXME: don't run this test by default because it destroys the
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# local multipath config, the timing of multipath/dm/lvm interactions
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# is fragile, and there's insufficient cleanup after a test fails.
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skip
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systemctl stop multipathd
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multipath -F || true
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rm /etc/multipath/wwids || true
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rmmod scsi_debug || true
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rm /etc/multipath/conf.d/lvmtest.conf || true
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modprobe --dry-run scsi_debug || skip
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multipath -l || skip
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multipath -l | grep scsi_debug && skip
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ls /etc/multipath/wwids && skip
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# Need to use /dev/mapper/mpath
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aux lvmconf 'devices/dir = "/dev"'
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aux lvmconf 'devices/scan = "/dev"'
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# Could set filter to $MP and the component /dev/sd devs
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aux lvmconf "devices/filter = [ \"a|.*|\" ]"
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aux lvmconf "devices/global_filter = [ \"a|.*|\" ]"
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modprobe scsi_debug dev_size_mb=16 num_tgts=1
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sleep 2
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# Get scsi device name created by scsi_debug.
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# SD = sdh
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# SD_DEV = /dev/sdh
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SD=$(grep -H scsi_debug /sys/block/sd*/device/model | cut -f4 -d /);
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echo $SD
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SD_DEV=/dev/$SD
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echo $SD_DEV
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# if multipath claimed SD, then io will fail
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#dd if=$SD_DEV of=/dev/null bs=4k count=1 iflag=direct
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#dd if=/dev/zero of=$SD_DEV bs=4k count=1 oflag=direct
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# check if multipathd claimed the scsi dev when it appears and create mp dm device
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sleep 2
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multipath -l
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# create the mp dm device
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multipath $SD_DEV
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# Get mpath device name created by multipath.
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# MP = mpatha
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# MP_DEV = /dev/maper/mpatha
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MP=$(multipath -l | grep scsi_debug | cut -f1 -d ' ')
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echo $MP
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MP_DEV=/dev/mapper/$MP
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echo $MP_DEV
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dd if=$MP_DEV of=/dev/null bs=4k count=1 iflag=direct
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dd if=/dev/zero of=$MP_DEV bs=4k count=1 oflag=direct
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# Get wwid for the mp and sd dev.
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WWID=$(multipath -l $MP_DEV | head -1 | awk '{print $2}' | tr -d ')' | tr -d '(')
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echo $WWID
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grep $WWID /etc/multipath/wwids
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pvcreate $MP_DEV
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vgcreate $vg1 $MP_DEV
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not pvs $SD_DEV
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pvs $MP_DEV
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# remove mpath dm device then check that SD_DEV is
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# filtered based on /etc/multipath/wwids instead of
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# based on sysfs holder
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multipath -f $MP
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sleep 2
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not pvs $SD_DEV
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multipath $SD_DEV
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sleep 2
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multipath -l | grep $SD
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#
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# Add the wwid to the blacklist, then restart multipath
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# so the sd dev should no longer be used by multipath,
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# but the sd dev wwid is still in /etc/multipath/wwids.
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#
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mkdir /etc/multipath/conf.d/ || true
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rm -f /etc/multipath/conf.d/lvmtest.conf
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cat <<EOF > "/etc/multipath/conf.d/lvmtest.conf"
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blacklist {
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wwid $WWID
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}
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EOF
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cat /etc/multipath/conf.d/lvmtest.conf
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multipath -r
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sleep 2
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grep $WWID /etc/multipath/wwids
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multipath -l |tee out
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not grep $SD out
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not grep $MP out
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not grep $WWID out
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not pvs $MP_DEV
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pvs $SD_DEV
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vgs $vg1
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#
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# Add the wwid to the blacklist_exceptions, in addition
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# to the blacklist, then restart multipath so the
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# sd dev should again be used by multipath.
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#
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rm -f /etc/multipath/conf.d/lvmtest.conf
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cat <<EOF > "/etc/multipath/conf.d/lvmtest.conf"
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blacklist {
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wwid $WWID
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}
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blacklist_exceptions {
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wwid $WWID
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}
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EOF
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cat /etc/multipath/conf.d/lvmtest.conf
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multipath -r
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sleep 2
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grep $WWID /etc/multipath/wwids
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multipath -l |tee out
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grep $SD out
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grep $MP out
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grep $WWID out
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pvs $MP_DEV
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not pvs $SD_DEV
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vgs $vg1
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lvs $vg1
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sleep 2
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vgremove -ff $vg1
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sleep 2
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multipath -f $MP
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rm /etc/multipath/conf.d/lvmtest.conf
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rm /etc/multipath/wwids
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sleep 1
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rmmod scsi_debug
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