Digi
/
meta-digi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mount: fix intermittent data partition automount 

The udev mount script always queried the active system before mounting
any partition. On eMMC systems this lookup used /dev/disk/by-partlabel,
which is populated by udev itself and may still be incomplete and the
script exited for that partition.
Only resolve the active system for linux_a/linux_b, and read the eMMC
root partition name from sysfs instead of the udev-created by-partlabel
links.

https://onedigi.atlassian.net/browse/DEL-10131

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
This commit is contained in:
Isaac Hermida 2026-05-13 09:46:04 +02:00
parent 32996b0885
commit 58577373ba
1 changed files with 14 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
meta-digi-arm/recipes-core/udev/udev-extraconf/mount_digiparts.sh
View File

@ -38,12 +38,20 @@ get_active_system() {
fi fi
else else
local MMCROOT_DEV local MMCROOT_DEV
local devname
local label
local uevent
MMCROOT_DEV="$(stat -c%D /)" MMCROOT_DEV="$(stat -c%D /)"
for label in /dev/disk/by-partlabel/*; do for uevent in /sys/class/block/*/uevent; do
if [ "$(stat -c"%02t%02T" "$(realpath "${label}")")" = "${MMCROOT_DEV}" ]; then devname="$(sed -ne 's/^DEVNAME=//p' "${uevent}")"
ACTIVE_SYSTEM="$(basename "${label}")" label="$(sed -ne 's/^PARTNAME=//p' "${uevent}")"
[ -n "${devname}" ] || continue
[ -n "${label}" ] || continue
if [ "$(stat -c"%02t%02T" "/dev/${devname}")" = "${MMCROOT_DEV}" ]; then
ACTIVE_SYSTEM="${label}"
break break
fi fi
done done
@ -89,10 +97,10 @@ if grep -qs "${MOUNTPOINT}" /proc/mounts; then
exit 0 exit 0
fi fi
if [ "${PARTNAME}" = "linux_a" ] || [ "${PARTNAME}" = "linux_b" ]; then
# Get from proc/cmdline the active system "a" or "b" # Get from proc/cmdline the active system "a" or "b"
get_active_system || exit get_active_system || exit
if [ "${PARTNAME}" = "linux_a" ] || [ "${PARTNAME}" = "linux_b" ]; then
PARTINDEX="${PARTNAME#linux_}" PARTINDEX="${PARTNAME#linux_}"
if [ "${ACTIVE_SYSTEM}" != "${PARTINDEX}" ]; then if [ "${ACTIVE_SYSTEM}" != "${PARTINDEX}" ]; then
logger "Skip mount partition '${PARTNAME}', because it is not the active system" logger "Skip mount partition '${PARTNAME}', because it is not the active system"