kernel-packages team mailing list archive

[Louis Bouchard <louis.bouchard@xxxxxxxxxxxxx>]

Hello,

You are correct, the networked kernel dumping mechanism was introduced
in Utopic Unicorn (14.10).  Being a major functionality upgrade, it
cannot be backported to the stable release as it would go against SRU
rules.

What I can offer is to request for a backport of the version in Vivid
into the -backports archive but it will not be possible to have the
functionality in the main archive.

Please let me know if the trusty-backports is acceptable to you

-- 
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https://bugs.launchpad.net/bugs/1477449

Title:
  kdump doesn't support network dump

Status in makedumpfile package in Ubuntu:
  Confirmed

Bug description:
  Problem Description
  ====================
  kdump doesn't support dump through network. Looks like tis works fine in 15.04.
   
  ---uname output---
  Linux pinelp2 3.19.0-22-generic #22~14.04.1-Ubuntu SMP Wed Jun 17 10:03:39 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux
   
  Steps to Reproduce
  =====================
  1. install 14.04.3
  2. check /etc/default/kdump-tools, there is no options for dumping through network

  Userspace tool common name: kdump-tools 
  The userspace tool has the following bit modes: 64-bit 
  Userspace rpm: 1.5.5-2ubuntu1 

  == Comment: # - Vaishnavi Bhat <vaish123@xxxxxxxxxx> -  ==
  Hi Ping Tian Han, 

  Like mentioned in the bug description, I see there is no option for
  dumping through network in /etc/default/kdump-tools,

  Can you try manually adding NFS"<nfs location to dump vmcore>" in the
  /etc/default.kdump-tools and check if this fails to dump vmcore or
  successful ?

  Thank you.

  == Comment: # - Ping Tian Han <pthan@xxxxxxxxxx> -  ==
  (In reply to comment #4)
  > Hi Ping Tian Han, 
  > 
  > Like mentioned in the bug description, I see there is no option for dumping
  > through network in /etc/default/kdump-tools,
  > 
  > Can you try manually adding NFS"<nfs location to dump vmcore>" in the
  > /etc/default.kdump-tools and check if this fails to dump vmcore or
  > successful ? 
  > 
  > Thank you.

  I added NFS="10.33.4.4:/distros" in the file then run "service kdump-
  tools restart", then triggered kdump, but it doesn't try the NFS
  location, still dump to local disk.

  == Comment: # - Vaishnavi Bhat <vaish123@xxxxxxxxxx> -  ==
  After adding the NFS details in /etc/default/kdump-tools and restarting the kdump service, there is no NFS details while doing a 'kdump-config show'.

  root@pinelp2:~# kdump-config show
  USE_KDUMP:        1
  KDUMP_SYSCTL:     kernel.panic_on_oops=1
  KDUMP_COREDIR:    /var/crash
  crashkernel addr: 
  current state:    ready to kdump

  kexec command:
    /sbin/kexec -p --args-linux --command-line="BOOT_IMAGE=/boot/vmlinux-3.19.0-22-generic root=UUID=8846b7fd-86b3-4823-a985-b57c279d1856 ro irqpoll maxcpus=1 nousb" --initrd=/boot/initrd.img-3.19.0-22-generic /boot/vmlinux-3.19.0-22-generic

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