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    SubjectRe: How to take a crash dump
    Erik Mouw wrote:
    >
    > On Fri, Jan 04, 2002 at 02:30:20PM +0530, SATHISH.J wrote:
    > > I have "lcrash" installed on my system. I have 2.4.8 kernel. I would like
    > > to know how to make a linux system panic so that I can take a crash dump
    > > and analyse using "lcrash". Is there any command to make the system panis
    > > as we have on other unices(SVR4 and unixware)?
    >

    Have you tried using the Alt+Sysrq+c key combination ?

    We had checked in some changes to enable non-disruptive dumps to be
    taken this way as
    well (i.e. you can get a dump without having to reboot the system) but
    that piece is going to be in lkcd 4.01.

    BTW, you can also trigger a crash dump conditionally using dprobes.

    Regards
    Suparna

    > I wrote a toy module that does exactly what you want:
    >
    > http://www.lart.tudelft.nl/lartware/port/lart.c
    >
    > I still have to get the module into Linus' tree so Christoph Hellwig
    > will drive to .nl to buy me a beer :)
    >
    > Erik
    >
    > --
    > J.A.K. (Erik) Mouw, Information and Communication Theory Group, Faculty
    > of Information Technology and Systems, Delft University of Technology,
    > PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2783635
    > Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl
    > WWW: http://www-ict.its.tudelft.nl/~erik/
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