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Message #104953
[Bug 1423483] Re: Kdump over network(nfs) does not work
** Changed in: makedumpfile (Ubuntu)
Status: New => Triaged
** Changed in: makedumpfile (Ubuntu)
Importance: Undecided => Low
** Changed in: makedumpfile (Ubuntu)
Assignee: (unassigned) => Louis Bouchard (louis-bouchard)
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https://bugs.launchpad.net/bugs/1423483
Title:
Kdump over network(nfs) does not work
Status in makedumpfile package in Ubuntu:
Triaged
Bug description:
Problem Description
==========================
Kdump over network(nfs) does not work
---uname output---
3.18.0-13-generic
Machine Type = POWER8
System Hang
=====================
The dump process seems to take a lot of time and it takes forever to save the dump. I waited for almost 3 hours, but the dump did not complete.
Steps to Reproduce
===========================
1) Configure kdump over nfs
Add the following line to /etc/default/kdump-tools
NFS="9.3.189.84:/nfsshare"
2) Load kdump
root@lop824:~# kdump-config load
Modified cmdline:BOOT_IMAGE=/boot/vmlinux-3.18.0-13-generic root=UUID=234c5426-796e-4f54-bd77-7b0fe10e0407 ro splash irqpoll maxcpus=1 nousb systemd.unit=kdump-tools.service elfcorehdr=155072K
segment[0].mem:0x8000000 memsz:24510464
segment[1].mem:0x9760000 memsz:65536
segment[2].mem:0x9770000 memsz:65536
segment[3].mem:0x9780000 memsz:65536
segment[4].mem:0x9790000 memsz:21954560
segment[5].mem:0xec70000 memsz:196608
* loaded kdump kernel
3) Trigger a dump. Kdump boot and starts copying the dump but hangs
midway.
root@lop824:~# ls -lh /nfsmount/9.114.13.128-201502170326/
total 1.3M
-rw------- 1 nobody nogroup 27M Feb 17 03:27 dump-incomplete
root@lop824:~#
root@lop824:~# kdump-config show
USE_KDUMP: 1
KDUMP_SYSCTL: kernel.panic_on_oops=1
KDUMP_COREDIR: /var/crash
crashkernel addr:
NFS: 9.3.189.84:/nfsshare
HOSTTAG: ip
current state: ready to kdump
kexec command:
/sbin/kexec -p --args-linux --command-line="BOOT_IMAGE=/boot/vmlinux-3.18.0-13-generic root=UUID=234c5426-796e-4f54-bd77-7b0fe10e0407 ro splash irqpoll maxcpus=1 nousb systemd.unit=kdump-tools.service" --initrd=/boot/initrd.img-3.18.0-13-generic /boot/vmlinux-3.18.0-13-generic
root@lop824:~#
== Comment: #3 - SACHIN P. SANT <ssant@xxxxxxxxxx> - 2015-02-17 07:17:14 ==
Following messages are seen while saving a dump
[ 31.059522] NFS: Registering the id_resolver key type
[ 31.059542] Key type id_resolver registered
[ 31.059544] Key type id_legacy registered
[ 36.021996] nfs: server 9.3.189.84 not responding, timed out
[ 36.022026] nfs: server 9.3.189.84 not responding, timed out
[ 36.022049] nfs: server 9.3.189.84 not responding, timed out
[ 40.530000] nfs: server 9.3.189.84 not responding, timed out
[ 40.530033] nfs: server 9.3.189.84 not responding, timed out
[ 45.037994] nfs: server 9.3.189.84 not responding, timed out
[ 45.038020] nfs: server 9.3.189.84 not responding, timed out
[ 48.550133] nfs: server 9.3.189.84 not responding, timed out
[ 48.550161] nfs: server 9.3.189.84 not responding, timed out
[ 51.557995] nfs: server 9.3.189.84 not responding, timed out
[ 51.558021] nfs: server 9.3.189.84 not responding, timed out
[ 55.617018] nfs: server 9.3.189.84 not responding, timed out
[ 55.617050] nfs: server 9.3.189.84 not responding, timed out
[ 58.621419] nfs: server 9.3.189.84 not responding, timed out
[ 58.621447] nfs: server 9.3.189.84 not responding, timed out
[ 58.621470] nfs: server 9.3.189.84 not responding, timed out
[ 61.413753] BUG: arch topology borken
[ 61.413757] the DIE domain not a subset of the NUMA domain
[ 61.413760] BUG: arch topology borken
[ 61.413762] the DIE domain not a subset of the NUMA domain
[ 61.413765] BUG: arch topology borken
[ 61.413766] the DIE domain not a subset of the NUMA domain
[ 61.413769] BUG: arch topology borken
[ 61.413770] the DIE domain not a subset of the NUMA domain
[ 61.413773] BUG: arch topology borken
[ 61.413774] the DIE domain not a subset of the NUMA domain
[ 61.413777] BUG: arch topology borken
[ 61.413778] the DIE domain not a subset of the NUMA domain
[ 61.413781] BUG: arch topology borken
[ 61.413782] the DIE domain not a subset of the NUMA domain
[ 61.413785] BUG: arch topology borken
[ 61.413786] the DIE domain not a subset of the NUMA domain
[ 61.625436] nfs: server 9.3.189.84 not responding, timed out
[ 66.133424] nfs: server 9.3.189.84 not responding, timed out
[ 66.133453] nfs: server 9.3.189.84 not responding, timed out
[ 70.641436] nfs: server 9.3.189.84 not responding, timed out
[ 70.641465] nfs: server 9.3.189.84 not responding, timed out
[ 74.149421] nfs: server 9.3.189.84 not responding, timed out
[ 74.149452] nfs: server 9.3.189.84 not responding, timed out
[ 78.209471] nfs: server 9.3.189.84 not responding, timed out
[ 78.209498] nfs: server 9.3.189.84 not responding, timed out
[ 81.629433] nfs: server 9.3.189.84 not responding, timed out
[ 81.629442] nfs: server 9.3.189.84 not responding, timed out
[ 84.633433] nfs: server 9.3.189.84 not responding, timed out
[ 87.637419] nfs: server 9.3.189.84 not responding, timed out
[ 90.649450] nfs: server 9.3.189.84 not responding, timed out
[ 93.653426] nfs: server 9.3.189.84 not responding, timed out
[ 95.005433] nfs: server 9.3.189.84 not responding, timed out
[ 96.653426] nfs: server 9.3.189.84 not responding, timed out
[ 98.009437] nfs: server 9.3.189.84 not responding, timed out
I can manually mount the nfs share manually (while the dump is in
progress)
root@lop824:~# mount -t nfs 9.3.189.84:/nfsshare /nfsmount/
root@lop824:~# mount
/dev/sda2 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,nodev,noexec,nosuid)
sysfs on /sys type sysfs (rw,nodev,noexec,nosuid)
none on /sys/fs/cgroup type tmpfs (rw,uid=0,gid=0,mode=0755,size=1024)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,nodev,noexec,nosuid,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,nodev,noexec,nosuid,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
cgmfs on /run/cgmanager/fs type tmpfs (rw,relatime,size=128k,mode=755)
rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw)
9.3.189.84:/nfsshare on /nfsmount type nfs (rw,vers=4,addr=9.3.189.84,clientaddr=9.114.13.128)
root@lop824:~# ls
root@lop824:~# ls /nfsmount/
9.114.13.128-201502170326 test
root@lop824:~# ls /nfsmount/9.114.13.128-201502170326/
dump-incomplete
root@lop824:~#
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