LVM HOWTO
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# 7.5. Slackware

Slackware 8.1 requires no updating of boot time scripts in order to make LVM work.

For versions previous to Slackware 8.1, you should apply the following patch to `/etc/rc.d/rc.S`

    cd /etc/rc.d
    cp -a rc.S rc.S.old
    patch -p0 < rc.S.diff

(the cp part to make a backup in case).

    ----- snip snip file: rc.S.diff---------------
    --- rc.S.or	Tue Jul 17 18:11:20 2001
    +++ rc.S	Tue Jul 17 17:57:36 2001
    @@ -4,6 +4,7 @@
     #
     # Mostly written by:  Patrick J. Volkerding, <volkerdi@slackware.com>
     #
    +# Added LVM support <tgs@iafrica.com>

     PATH=/sbin:/usr/sbin:/bin:/usr/bin

    @@ -28,19 +29,21 @@
       READWRITE=yes
     fi

    +
     # Check the integrity of all filesystems
     if [ ! READWRITE = yes ]; then
    -  /sbin/fsck -A -a
    +  /sbin/fsck -a /
    +  # Check only the root fs first, but no others
       # If there was a failure, drop into single-user mode.
       if [ ? -gt 1 ] ; then
         echo
         echo
    -    echo "*******************************************************"
    -    echo "*** An error occurred during the file system check. ***"
    -    echo "*** You will now be given a chance to log into the  ***"
    -    echo "*** system in single-user mode to fix the problem.  ***"
    -    echo "*** Running 'e2fsck -v -y <partition>' might help.  ***"
    -    echo "*******************************************************"
    +    echo "************************************************************"
    +    echo "*** An error occurred during the root file system check. ***"
    +    echo "*** You will now be given a chance to log into the       ***"
    +    echo "*** system in single-user mode to fix the problem.       ***"
    +    echo "*** Running 'e2fsck -v -y <partition>' might help.       ***"
    +    echo "************************************************************"
         echo
         echo "Once you exit the single-user shell, the system will reboot."
         echo
    @@ -82,6 +85,44 @@
         echo -n "get into your machine and start looking for the problem. "
         read junk;
       fi
    +  # okay / fs is clean, and mounted as rw
    +  # This was an addition, limits vgscan to /proc thus
    +  # speeding up the scan immensely.
    +  /sbin/mount /proc
    +
    +  # Initialize Logical Volume Manager
    +  /sbin/vgscan
    +  /sbin/vgchange -ay
    +
    +  /sbin/fsck -A -a -R
    +  #Check all the other filesystem, including the LVM's, excluding /
    +
    +  # If there was a failure, drop into single-user mode.
    +  if [ ? -gt 1 ] ; then
    +    echo
    +    echo
    +    echo "*******************************************************"
    +    echo "*** An error occurred during the file system check. ***"
    +    echo "*** You will now be given a chance to log into the  ***"
    +    echo "*** system in single-user mode to fix the problem.  ***"
    +    echo "*** Running 'e2fsck -v -y <partition>' might help.  ***"
    +    echo "*** The root filesystem is ok and mounted readwrite ***"
    +    echo "*******************************************************"
    +    echo
    +    echo "Once you exit the single-user shell, the system will reboot."
    +    echo
    +
    +    PS1="(Repair filesystem) #"; export PS1
    +    sulogin
    +
    +    echo "Unmounting file systems."
    +    umount -a -r
    +    mount -n -o remount,ro /
    +    echo "Rebooting system."
    +    sleep 2
    +    reboot
    +  fi
    +
     else
       echo "Testing filesystem status: read-write filesystem"
       if cat /etc/fstab | grep ' / ' | grep umsdos 1> /dev/null 2> /dev/null ;
    then
    @@ -111,14 +152,16 @@
         echo -n "Press ENTER to continue. "
         read junk;
       fi
    +
     fi

    +
     # remove /etc/mtab* so that mount will create it with a root entry
     /bin/rm -f /etc/mtab* /etc/nologin /etc/shutdownpid

     # mount file systems in fstab (and create an entry for /)
     # but not NFS or SMB because TCP/IP is not yet configured
    -/sbin/mount -a -v -t nonfs,nosmbfs
    +/sbin/mount -a -v -t nonfs,nosmbfs,proc

     # Clean up temporary files on the /var volume:
     /bin/rm -f /var/run/utmp /var/run/*.pid /var/log/setup/tmp/*
    --snip snip snip end of file---------------

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