group.of.nepali.translators team mailing list archive

[Louis Bouchard <louis.bouchard@xxxxxxxxxxxxx>]

Hello,

While I'm not able to reproduce the behavior I do think that the bug is
valid. It also bring up another issue with how the IP address is
collected. On system with multiple IP address in IPv4 & IPv6, hostname
-I would return :

192.168.88.240 10.0.4.1 192.168.30.1 192.168.10.1 192.168.122.1
192.168.11.1 10.0.3.1 10.172.64.118 fd39:6c94:2e21:a491::1
2001:67c:1562:8007::aac:4076

So while the race condition needs to be adressed, the definition method
also needs to be improved.

I'll do my best to look at it in a timely manner.

Kind regards,

...Louis

** Changed in: makedumpfile (Ubuntu)
       Status: New => Triaged

** Also affects: makedumpfile (Ubuntu Yakkety)
   Importance: Undecided
     Assignee: Taco Screen team (taco-screen-team)
       Status: Triaged

** Also affects: makedumpfile (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: makedumpfile (Ubuntu Xenial)
     Assignee: (unassigned) => Louis Bouchard (louis-bouchard)

** No longer affects: makedumpfile (Ubuntu Yakkety)

** Changed in: makedumpfile (Ubuntu Xenial)
       Status: New => Confirmed

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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1599561

Title:
  Ubuntu 16.04.01 kdump: IP prefix is missing in the directory name
  after first dump during kdump over ssh.

Status in makedumpfile package in Ubuntu:
  Triaged
Status in makedumpfile source package in Xenial:
  Confirmed

Bug description:
  == Comment: #0 - PAVITHRA R. PRAKASH - 2016-06-30 07:12:40 ==
  ---Problem Description---

  During kdump over ssh IP prefix will be present only in first dump,
  subsequent dumps will not have IP in directory name.

  ---Steps to Reproduce---

  1) apt-get install linux-crashdump
  2) increase crashdump size:
  sudo vim /etc/default/grub.d/kexec-tools.cfg

  GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT crashkernel
  =2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M

  3) sudo update-grub ; reboot the machine
  4) sudo sed -i 's/USE_KDUMP=0/USE_KDUMP=1/g' /etc/default/kdump-tools
  5) kdump-config show # should show "ready to dump"
  6) ssh-keygen -t rsa
  7) Edit below parameters in /etc/default/kdump-tools
  SSH="root@<server IP>"
  SSH_KEY=/root/.ssh/id_rsa
  8)  kdump-config propagate
  9)  kdump-config show
  10) reboot
  11) echo "c" > /proc/sysrq-trigger
  12) verify dump is created in ssh server.
  13) trigger the crash again.

  Logs
  =====
  root@ubuntu:/home/ubuntu# uname -a
  Linux ubuntu 4.4.0-26-generic #45-Ubuntu SMP Mon Jun 20 17:27:01 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux

  dumps on ssh server when 3 crashes are triggered
  ------------------------------------------------------------------------
  [root@ltc-fire5 crash]# ls
  192.168.122.25-201606300523
  [root@ltc-fire5 crash]# ls
  192.168.122.25-201606300523  -201606300524
  [root@ltc-fire5 crash]# ls
  192.168.122.25-201606300523  -201606300524  -201606300525
  [root@ltc-fire5 crash]# cd -201606300524
  -bash: cd: -2: invalid option
  cd: usage: cd [-L|[-P [-e]]] [dir]
  [root@ltc-fire5 crash]# cd -- -201606300524
  [root@ltc-fire5 -201606300524]# ls
  dmesg.201606300524  dump.201606300524

  
  == Comment: #8 - Kevin W. Rudd - 2016-07-05 18:23:01 ==

  Canonical,

  The behavior appears to be somewhat intermittent, and it looks as if
  define_stampdir() might be getting called before the network init has
  completed.  If delaying this function is not practical, it might be
  helpful to have define_stampdir() fall back to using just "hostname"
  if "hostname -I" doesn't return any useful information for setting
  THIS_HOST.

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