Re: nullfs-autopsy after crash

From: Dmitry Morozovsky (marck_at_rinet.ru)
Date: 05/10/04

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    Date: Mon, 10 May 2004 18:42:17 +0400 (MSD)
To: Tim Robbins <tjr@freebsd.org>

    On Mon, 10 May 2004, Tim Robbins wrote:

    TR> > /bin on /usr/tmp/jail/bin (null, local, read-only)
    TR> > /sbin on /usr/tmp/jail/sbin (null, local, read-only)
    TR> > /etc on /usr/tmp/jail/etc (null, local, read-only)
    TR> > /dev on /usr/tmp/jail/dev (null, local, read-only)
    TR> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    TR>
    TR> Accessing special (non-directory, non-regular) files through nullfs
    TR> is known to cause panics. You'll need to create a dev directory
    TR> for each jail and populate it with makedev.

    ... and it seems appropriate for me to do this via mfs like

    JDIR=/ar/J/j224
    mount_mfs -s 256 -i 768 -o nosuid swap ${JDIR}/dev > /dev/null 2>&1
    # XXX mfs use 1777 mode so clean this up
    chmod 755 ${JDIR}/dev
    rm -rf ${JDIR}/dev/ >/dev/null 2>&1
    cd ${JDIR}/dev
    sh /dev/MAKEDEV std pty0
    rm mem kmem pci io klog console
    ln -sf null mem
    ln -sf null kmem
    ln -sf null console

    Sincerely,
    D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
    ------------------------------------------------------------------------
    *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
    ------------------------------------------------------------------------
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