VMCORE and kdump.conf file not found LINUX 6.12 KERNEL

[Gokul Praveen]

Hi Team,

It would be really great,if you could help me with a couple of questions 
regarding kexec and kdump.

I tried kdump on my SOC and it is rebooting fine . However,the VMCORE 
file and /etc/kdump.conf file is not found.

VERSION:
kexec-tools 2.0.30.
kernel 6.12v

STEPS FOLLOWED:

1)git clone git://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git

2)
    HOST PC:
	>cd $KEXEC_TOOLS_DIR
	>./bootstrap LDFLAGS=-static ./configure --prefix=/usr/local 
--host=aarch64-linux-gnu --target=aarch64-linux-gnu
	>make
	>cp $KEXEC_TOOLS_DIR/build/sbin/kexec /media/$USER/rootfs/usr/sbin (To 
copy the kexec binary to the rootfs filesystem of the target board)

    TARGET BOARD:
	>Booted upto linux
	>cmdline="crashkernel=128M console=ttyS2,115200n8 root=/dev/mmcblk0p2 
rw rootfste=ext4 rootwait" (/dev/mmcblk0p2 refers to EMMC)
	> /kexec -p /Image --command-line="$cmdline" 
--dtb=/k3-j721e-common-proc-board.dtb
	> echo c > /proc/sysrq-trigger


LOGS:

          Starting Reboot and dump vmcore via kexec...
[  OK  ] Listening on Docker Socket for the API.
[  OK  ] Listening on Weston socket.
[  OK  ] Started D-Bus System Message Bus.
[  OK  ] Reached target Socket Units.
[  OK  ] Reached target Basic System.
[  OK  ] Started Job spooling tools.
          Starting Avahi mDNS/DNS-SD Stack...
[  OK  ] Started Periodic Command Scheduler.
          Starting Print notice about GPLv3 packages...
          Starting IPv6 Packet Filtering Framework...
          Starting IPv4 Packet Filtering Framework...
[  OK  ] Started irqbalance daemon.
          Starting Telephony service...
          Starting Expand the rootfs partiti…to full size of the boot 
device....
[    5.992254] audit: type=1334 audit(1728487094.820:10): prog-id=14 op=LOAD

[    6.003634] audit: type=1334 audit(1728487094.832:11): prog-id=15 op=LOAD
[    6.010482] audit: type=1334 audit(1728487094.832:12): prog-id=16 op=LOAD
          Starting User Login Management...
          Starting Telnet Server...
[  OK  ] Finished IPv6 Packet Filtering Framework.
[  OK  ] Finished IPv4 Packet Filtering Framework.
[  OK  ] Finished Telnet Server.
[  OK  ] Started User Login Management.
[  OK  ] Finished Expand the rootfs partition to full size of the boot 
device..
[  OK  ] Started Telephony service.
[  OK  ] Started Avahi mDNS/DNS-SD Stack.
[  OK  ] Created slice Slice /system/systemd-fsck.
          Expecting device /dev/mmcblk0p1...
[  OK  ] Reached target Preparation for Network.
          Starting Load Kernel Module drm...
[    6.406000] audit: type=1334 audit(1728487095.236:13): prog-id=17 op=LOAD
          Starting Network Configuration...
          Starting Virtual Console Setup...
[  OK  ] Stopped target RPC Port Mapper.
[  OK  ] Stopped target Timer Units.
[  OK  ] Stopped Daily rotation of log files.
[  OK  ] Stopped Daily Cleanup of Temporary Directories.
[  OK  ] Stopped target System Time Set.
          Stopping Job spooling tools...
          Stopping Avahi mDNS/DNS-SD Stack...
          Stopping Periodic Command Scheduler...
          Stopping irqbalance daemon...
[  OK  ] Stopped target Host and Network Name Lookups.
          Stopping Telephony service...
[  OK  ] Stopped Expand the rootfs partition to full size of the boot 
device..
          Stopping strongSwan IPsec IKEv1/IKEv2 daemon using ipsec.conf...
[  OK  ] Removed slice Slice /system/getty.
[  OK  ] Removed slice Slice /system/serial-getty.
          Stopping User Login Management...
          Stopping Load/Save OS Random Seed...
          Starting Record Runlevel Change in UTMP...
          Stopping Telnet Server...
[  OK  ] Stopped target Remote File Systems.
[  OK  ] Stopped Reboot and dump vmcore via kexec.