Re: [Crash-utility] crashdc: problem when running crash in kexec environment for SLES11
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Hello everyone,
Bernhard Walle a écrit :
I don't think so. I just tried to reproduce the problem here with
openSUSE 11.1 (I have no SLES). In my case, I also got the "killed", but
it was too less memory. I changed the reservation to be 256 MiB for the
crashkernel, and now it works.
For info, I'm doing the dev on an i686 VMware guest for now.
Bernhard found the SLES11 problem : memory was too tight to allow
crash/gdb to run.
I increased the mem reservation with the following :
crashkernel=256M-:128M@16M
and got crash to run my commands. I have a smaller problem now. I'm
issueing the following commands to crash :
!echo "### Crash Context Information" >>
/var/crash/2009-09-25-11:31/crash-data-200909251134.txt
!echo "crash> sys" >>
/var/crash/2009-09-25-11:31/crash-data-200909251134.txt
sys >> /var/crash/2009-09-25-11:31/crash-data-200909251134.txt
!echo -n `date`;echo "### Preserved Kernel Ring Buffer"
!echo "### Preserved Kernel Ring Buffer" >>
/var/crash/2009-09-25-11:31/crash-data-200909251134.txt
!echo "crash> log" >>
/var/crash/2009-09-25-11:31/crash-data-200909251134.txt
log >> /var/crash/2009-09-25-11:31/crash-data-200909251134.txt
I did include /bin/echo in the KDUMP_REQUIRED_PROGRAMS variable, but
crash still returns :
crash: cannot open pipe: echo "### Crash Context
Information" >> /root/var/crash/2009-10-01-15:51/crash-data-200910011552.txt
crash: cannot open pipe: echo "crash> sys" >>
/root/var/crash/2009-10-01-15:51/crash-data-200910011552.txt
crash: cannot open pipe: echo -n `date`;echo "### Preserved Kernel Ring
Buffer"
crash: cannot open pipe: echo "### Preserved Kernel Ring Buffer" >>
/root/var/crash/2009-10-01-15:51/crash-data-200910011552.txt
So it looks like the ! to shell out the "echo "... command doesn't work,
most probably because of the limited commands in the kexec environment.
Now I could try to chroot crash execution, but if I could find the
single command to add to KDUMP_REQUIRED_PROGRAMS to work around this, I
would prefer.
Can I beg for your deep knowledge another time ? ;-)
Kind regards and thanks for your precious help,
- --
Louis Bouchard, Linux Support Engineer
Team lead, EMEA Linux Competency Center,
Linux Ambassador, HP
HP Services 1 Ave du Canada
HP France Z.A. de Courtaboeuf
louis.bouchard(a)hp.com 91 947 Les Ulis
http://www.hp.com/go/linux France
http://www.hp.com/fr
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