Bug 2203859

/sbin/md_raid_auto_readd.sh

#!/usr/bin/bash
MDADM=/sbin/mdadm
DEVNAME=$1

export $(${MDADM} --examine --export ${DEVNAME})
if [ -z "${MD_UUID}" ]; then
     exit 1
fi

UUID_LINK=$(readlink /dev/disk/by-id/md-uuid-${MD_UUID})
MD_DEVNAME=${UUID_LINK##*/}
export $(${MDADM} --detail --export /dev/${MD_DEVNAME})
if [ -z "${MD_METADATA}" ] ; then
     exit 1
fi
 
${MDADM} --manage /dev/${MD_DEVNAME} --re-add ${DEVNAME} --verbose

#
# Enable/Disable - default is Disabled
# to disable this rule, GOTO="md_end" should be the first active command.
# to enable this rule, Comment out GOTO="md_end". 
GOTO="md_end"

# Required: MD arrays must have a bitmap for transient devices to
# be added back in the array.
# mdadm -CR /dev/md0 -l1 -n2 /dev/sd[ab] –bitmap=internal

# Don't process any events if anaconda is running as anaconda brings up
# raid devices manually
ENV{ANACONDA}=="?*", GOTO="md_end"

# Also don't process disks that are slated to be a multipath device
ENV{DM_MULTIPATH_DEVICE_PATH}=="1", GOTO="md_end"

# We process add events on block devices (since they are ready as soon as
# they are added to the system), but we must process change events as well
# on any dm devices (like LUKS partitions or LVM logical volumes) and on
# md devices because both of these first get added, then get brought live
# and trigger a change event.  The reason we don't process change events
# on bare hard disks is because if you stop all arrays on a disk, then
# run fdisk on the disk to change the partitions, when fdisk exits it
# triggers a change event, and we want to wait until all the fdisks on
# all member disks are done before we do anything.  Unfortunately, we have
# no way of knowing that, so we just have to let those arrays be brought
# up manually after fdisk has been run on all of the disks.

# First, process all add events (md and dm devices will not really do
# anything here, just regular disks, and this also won't get any imsm
# array members either)

ACTION!="add", GOTO="md_end"
ENV{ID_FS_TYPE}!="linux_raid_member", GOTO="md_end"
SUBSYSTEM=="block", ACTION=="add", RUN{program}+="/sbin/md_raid_auto_readd.sh $devnode" 

#
# Land here to exit cleanly
LABEL="md_end"

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (mdadm bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:6651