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Old 10-12-2018, 05:02 AM   #1
avihuh
LQ Newbie
 
Registered: Dec 2016
Posts: 19

Rep: Reputation: Disabled
kdump not generating vmcore log


i've a virtualbox Red Hat 7, I installed kdump and configured all necessary

kdump.conf:

Code:
#raw /dev/vg/lv_kdump
#ext4 /dev/vg/lv_kdump
#ext4 LABEL=/boot
#ext4 UUID=03138356-5e61-4ab3-b58e-27507ac41937
#nfs my.server.com:/export/tmp
#ssh user@my.server.com
#sshkey /root/.ssh/kdump_id_rsa
path /var/crash
core_collector makedumpfile -l --message-level 1 -d 31
#core_collector scp
#kdump_post /var/crash/scripts/kdump-post.sh
#kdump_pre /var/crash/scripts/kdump-pre.sh
#extra_bins /usr/bin/lftp
#extra_modules gfs2
#default shell
#force_rebuild 1
#force_no_rebuild 1
#dracut_args --omit-drivers "cfg80211 snd" --add-drivers "ext2 ext3"
#fence_kdump_args -p 7410 -f auto -c 0 -i 10
#fence_kdump_nodes node1 node2
grub.conf:

Code:
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap crashkernel=auto rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
fstab:

Code:
# /etc/fstab
# Created by anaconda on Thu Oct 11 09:33:51 2018
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/rhel-root   /                       xfs     defaults        0 0
UUID=8403e4b4-6495-4d18-9e5b-5fb26335a223 /boot                   xfs     defaults        0 0
/dev/mapper/rhel-swap   swap                    swap    defaults        0 0
kdump status:
Code:
 ● kdump.service - Crash recovery kernel arming
   Loaded: loaded (/usr/lib/systemd/system/kdump.service; enabled; vendor preset: enabled)
   Active: active (exited) since Fri 2018-10-12 11:32:19 IDT; 16min ago
  Process: 1070 ExecStart=/usr/bin/kdumpctl start (code=exited, status=0/SUCCESS)
 Main PID: 1070 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/kdump.service

Oct 11 21:39:46 localhost.localdomain systemd[1]: Starting Crash recovery ker...
Oct 12 11:32:19 localhost.localdomain kdumpctl[1070]: kexec: loaded kdump kernel
Oct 12 11:32:19 localhost.localdomain kdumpctl[1070]: Starting kdump: [OK]
Oct 12 11:32:19 localhost.localdomain systemd[1]: Started Crash recovery kern...
Hint: Some lines were ellipsized, use -l to show in full.
when I crash the kernel with :

Code:
echo 1 > /proc/sys/kernel/sysrq
echo c > /proc/sysrq-trigger
the virtualbox stuck no automatic reboot or any terminal output, after a few second im rebooting the virtualbox manually when i check the /var/crash no output inside

please advice
 
Old 10-12-2018, 11:08 PM   #2
scasey
Senior Member
 
Registered: Feb 2013
Location: Tucson, AZ, USA
Distribution: CentOS 7.7.1908
Posts: 4,262

Rep: Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490Reputation: 1490
What does RedHat say? You do have a subscription, right?
 
Old 10-13-2018, 02:39 AM   #3
avihuh
LQ Newbie
 
Registered: Dec 2016
Posts: 19

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by scasey View Post
What does RedHat say? You do have a subscription, right?
No I donít .
 
Old 01-02-2019, 04:49 AM   #4
catter95
LQ Newbie
 
Registered: Jan 2019
Posts: 1

Rep: Reputation: Disabled
Did you find a solution?

Quote:
Originally Posted by avihuh View Post
No I donít .
I have the same problem too and really wonder why..
 
  


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