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vdev_id: symlinks creation for multipath disk partitions (#17331)

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It has been observed that the symlinks are not being created
for the disk partitions on multipath enabled systems.
This fix addresses the issue.

Signed-off-by: Diwakar Kristappagari <diwakar-k@hpe.com>
Reviewed-by: Akash B <akash-b@hpe.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
(cherry picked from commit e2ba0f7643)
This commit is contained in:
diwakar-kristappagari 2025-05-14 02:19:13 +05:30 committed by Tony Hutter
parent 2e1f95b6bc
commit 280c3c3ace
1 changed files with 33 additions and 9 deletions
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42
udev/vdev_id
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@ -288,13 +288,20 @@ sas_handler() {
# we have to append the -part suffix directly in the
# helper.
if [ "$DEVTYPE" != "partition" ] ; then
# Match p[number], remove the 'p' and prepend "-part"
PART=$(echo "$DM_NAME" |
awk 'match($0,/p[0-9]+$/) {print "-part"substr($0,RSTART+1,RLENGTH-1)}')
# WWNs end with number -> p<partition>, alphabet -> <partition>
# '3' + (WWN length 16) = 17
PART=${DM_NAME:17}
if [[ $PART = "p"* ]]; then
# Match p[number], remove the 'p' and prepend "-part"
PART=$(echo "$DM_NAME" |
awk 'match($0,/p[0-9]+$/) {print "-part"substr($0,RSTART+1,RLENGTH-1)}')
elif [[ $PART != "" ]]; then
PART="-part"${PART}
fi
fi
# Strip off partition information.
DM_NAME=$(echo "$DM_NAME" | sed 's/p[0-9][0-9]*$//')
DM_NAME=${DM_NAME:0:17}
if [ -z "$DM_NAME" ] ; then
return
fi
@ -305,10 +312,20 @@ sas_handler() {
# If our DEVNAME is something like /dev/dm-177, then we may be
# able to get our DMDEV from it.
DMDEV=$(echo $DEVNAME | sed 's;/dev/;;g')
if [ -n "$DMDEV" ]; then
DEV=$(ls /sys/block/$DMDEV/slaves)
for elm in "${DEV[@]}"; do
if [[ $elm == "dm-"* ]]; then
DMDEV=$elm
break
fi
done
fi
if [ ! -e /sys/block/$DMDEV/slaves/* ] ; then
# It's not there, try looking in /dev/mapper
DMDEV=$(ls -l --full-time /dev/mapper | grep $DM_NAME |
awk '{gsub("../", " "); print $NF}')
awk '{gsub("../", " "); print $NF}' | head -n 1)
fi
# Use sysfs pointers in /sys/block/dm-X/slaves because using
@ -520,13 +537,20 @@ scsi_handler() {
# we have to append the -part suffix directly in the
# helper.
if [ "$DEVTYPE" != "partition" ] ; then
# Match p[number], remove the 'p' and prepend "-part"
PART=$(echo "$DM_NAME" |
awk 'match($0,/p[0-9]+$/) {print "-part"substr($0,RSTART+1,RLENGTH-1)}')
# WWNs end with number -> p<partition>, alphabet -> <partition>
# '3' + (WWN length 16) = 17
PART=${DM_NAME:17}
if [[ $PART = "p"* ]]; then
# Match p[number], remove the 'p' and prepend "-part"
PART=$(echo "$DM_NAME" |
awk 'match($0,/p[0-9]+$/) {print "-part"substr($0,RSTART+1,RLENGTH-1)}')
elif [[ $PART != "" ]]; then
PART="-part"${PART}
fi
fi
# Strip off partition information.
DM_NAME=$(echo "$DM_NAME" | sed 's/p[0-9][0-9]*$//')
DM_NAME=${DM_NAME:0:17}
if [ -z "$DM_NAME" ] ; then
return
fi