Attachment 313281 Details for Bug 368941 – patch to enable transparent NFS root on kdump

patch to enable transparent NFS root on kdump

mkdumprd.patch (text/plain), 6.72 KB, created by IBM Bug Proxy on 2008-08-03 04:35:51 UTC

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Creator: IBM Bug Proxy

Created: 2008-08-03 04:35:51 UTC

Size: 6.72 KB

patch

obsolete

>Index: mkdumprd
>===================================================================
>RCS file: /cvs/dist/rpms/kexec-tools/RHEL-5/mkdumprd,v
>retrieving revision 1.77
>diff -u -r1.77 mkdumprd
>--- mkdumprd	23 May 2008 18:33:36 -0000	1.77
>+++ mkdumprd	27 May 2008 16:53:49 -0000
>@@ -66,7 +66,6 @@
> fstab="/etc/fstab"
> 
> vg_list=""
>-net_list=""
> USING_METHOD=""
> SAVE_PATH=/var/crash
> bin=""
>@@ -728,14 +727,7 @@
> 
>     rootdev=$(awk '/^[ \t]*[^#]/ { if ($2 == "/") { print $1; }}' $fstab)
>     # check if it's nfsroot
>-    if [ "$rootfs" == "nfs" ]; then
>-	remote=$(echo $rootdev | cut -d : -f 1)
>-	# FIXME: this doesn't handle ips properly
>-	remoteip=$(getent hosts $remote | cut -d ' ' -f 1) 
>-	netdev=`/sbin/ip route get to $remoteip |sed 's|.*dev $.*$.*|\1|g' |awk {'print $1;'} |head -n 1`	
>-	net_list="$net_list $netdev"
>-    # check if it's root by label
>-    elif echo $rootdev | cut -c1-6 | grep -q "LABEL=" ; then
>+    if echo $rootdev | cut -c1-6 | grep -q "LABEL=" ; then
>     	rootopts=$(echo $rootopts | sed -e 's/^r[ow],//' -e 's/,r[ow],$//' -e 's/,r[ow],/,/' \
>                      -e 's/^r[ow]$/defaults/' -e 's/$/,ro/')
>         majmin=$(get_numeric_dev dec /dev/root)
>@@ -845,7 +837,7 @@
>             emitdm "$NAME"
>             ;;
>         part)
>-            emit /sbin/kpartx.static -pp -a \"/dev/mapper/$NAME\"
>+            emit "/sbin/kpartx.static -pp -a \"/dev/mapper/$NAME\""
>             ;;
>         esac
>     done
>@@ -1505,6 +1497,7 @@
> mknod /dev/ptmx c 5 2
> mknod /dev/rtc c 10 135
> mknod /dev/urandom c 1 9
>+export NETWORK_STATUS=down
> EOF
> 
> # XXX really we need to openvt too, in case someting changes the
>@@ -1570,9 +1563,6 @@
> done
> EOF
>     
>-# HACK: module loading + device creation isn't necessarily synchronous...
>-# this will make sure that we have all of our devices before trying
>-# things like RAID or LVM
> emit "echo Creating Block Devices"
> emit "mkdir /dev/cciss"
> emit "mkdir /dev/ida"
>@@ -1621,14 +1611,6 @@
>     emit "mknod /dev/mapper/control b \$DM_MAJ \$DM_MIN"
> fi
> 
>-if [ -n "$net_list" ]; then
>-    for netdev in $net_list; do 
>-	emit "echo Bringing up $netdev"
>-	handle_netdev $netdev
>-	#emit $network
>-    done
>-fi
>-
> emitdms
> 
> if [ -n "$raiddevices" ]; then
>@@ -1775,6 +1757,7 @@
>                     fi
>                     emit "  $FINAL_ACTION"
>                     emit "fi"
>+                    emit "export NETWORK_STATUS=up"
>                     #grab remote host and xlate into numbers
>                     rhost=`echo $config_val | sed 's/.*@//' | cut -d':' -f1`
>                     need_dns=`echo $rhost|grep [a-zA-Z]`
>@@ -2064,45 +2047,75 @@
> fi
> 
> emit "echo Creating root device."
>+ROOT_MOUNT=`mount | grep "on / "`
>+ROOT_MOUNT_TYPE=`echo $ROOT_MOUNT | awk '{print $5'`
>+ROOT_MOUNT_EXPORT=`echo $ROOT_MOUNT | awk '{print $1}'`
>+ROOT_MOUNT_OPTS=`echo $ROOT_MOUNT | awk '{print $4}'`
> emit "#check to see if we have root= on the command line"
>-emit "ROOTDEV=\`cat /proc/cmdline | grep root=\`"
>-emit "if [ -n \"\$ROOTDEV\" ]"
>-emit "then"
>-emit "   ROOTDEV=\`cat /proc/cmdline | sed 's/^.*root=//' | cut -d\" \" -f1\`"
>-emit "   IS_LABEL=\`echo \$ROOTDEV | grep LABEL\`"
>-emit "   IS_UUID=\`echo \$ROOTDEV | grep UUID\`"
>-emit "   if [ -n \"\$IS_LABEL\" -o -n \"\$IS_UUID\" ] "
>-emit "   then"
>-emit "      ROOTDEV=\`findfs \$ROOTDEV\`"
>-emit "   fi"
>-emit "else"
>-emit "   #we need to get the root major/minor from real-root-dev"
>-emit "   ROOT_DEV_NR=\`cat /proc/sys/kernel/real-root-dev\`"
>-emit "   ROOT_MIN=\`echo \$ROOT_DEV_NR | sed -e's/\$[0-9a-f]\\{1,2\\}\$\$[0-9a-f]\\{2\\}\$/\\2/'\`"
>-emit "   ROOT_MAJ=\`echo \$ROOT_DEV_NR | sed -e's/\$[0-9a-f]\\{1,2\\}\$\$[0-9a-f]\\{2\\}\$/\\1/'\`"
>-emit "   mknod /dev/rootdev b 0x\$ROOT_MAJ 0x\$ROOT_MIN"
>-emit "   ROOTDEV=/dev/rootdev"
>-emit "fi"
>+if [ "$ROOT_MOUNT_TYPE" != "nfs" ]
>+then
>+    emit "ROOTDEV=\`cat /proc/cmdline | grep root=\`"
>+    emit "if [ -n \"\$ROOTDEV\" ]"
>+    emit "then"
>+    emit "   ROOTDEV=\`cat /proc/cmdline | sed 's/^.*root=//' | cut -d\" \" -f1\`"
>+    emit "   IS_LABEL=\`echo \$ROOTDEV | grep LABEL\`"
>+    emit "   IS_UUID=\`echo \$ROOTDEV | grep UUID\`"
>+    emit "   if [ -n \"\$IS_LABEL\" -o -n \"\$IS_UUID\" ] "
>+    emit "   then"
>+    emit "      ROOTDEV=\`findfs \$ROOTDEV\`"
>+    emit "   fi"
>+    emit "else"
>+    emit "   #we need to get the root major/minor from real-root-dev"
>+    emit "   ROOT_DEV_NR=\`cat /proc/sys/kernel/real-root-dev\`"
>+    emit "   ROOT_MIN=\`echo \$ROOT_DEV_NR | sed -e's/\$[0-9a-f]\\{1,2\\}\$\$[0-9a-f]\\{2\\}\$/\\2/'\`"
>+    emit "   ROOT_MAJ=\`echo \$ROOT_DEV_NR | sed -e's/\$[0-9a-f]\\{1,2\\}\$\$[0-9a-f]\\{2\\}\$/\\1/'\`"
>+    emit "   mknod /dev/rootdev b 0x\$ROOT_MAJ 0x\$ROOT_MIN"
>+    emit "   ROOTDEV=/dev/rootdev"
>+    emit "fi"
> 
>-emit "echo Checking root filesystem."
>-emit "fsck \$ROOTDEV"
>-emit "echo Mounting root filesystem."
>-emit "for FSTYPE in ext3 ext2 minix"
>-emit "do"
>-emit "  echo Trying mount -t \$FSTYPE \$ROOTDEV /sysroot"
>-emit "  mount -t \$FSTYPE \$ROOTDEV /sysroot >/dev/null 2>&1 "
>-emit "  if [ \$? == 0 ]"
>-emit "  then"
>-emit "      echo Using \$FSTYPE on root filesystem"
>-emit "      ROOT_MOUNT_GOOD=1"
>-emit "      break;"
>-emit "  fi"
>-emit "done"
>-emit "if [ -z \"\$ROOT_MOUNT_GOOD\" ]"
>-emit "then"
>-emit "   echo unable to mount rootfs. Dropping to shell"
>-emit "   /bin/msh"
>-emit "fi"
>+    emit "echo Checking root filesystem."
>+    emit "fsck \$ROOTDEV"
>+    emit "echo Mounting root filesystem."
>+    emit "for FSTYPE in ext3 ext2 minix"
>+    emit "do"
>+    emit "  echo Trying mount -t \$FSTYPE \$ROOTDEV /sysroot"
>+    emit "  mount -t \$FSTYPE \$ROOTDEV /sysroot >/dev/null 2>&1 "
>+    emit "  if [ \$? == 0 ]"
>+    emit "  then"
>+    emit "      echo Using \$FSTYPE on root filesystem"
>+    emit "      ROOT_MOUNT_GOOD=1"
>+    emit "      break;"
>+    emit "  fi"
>+    emit "done"
>+    emit "if [ -z \"\$ROOT_MOUNT_GOOD\" ]"
>+    emit "then"
>+    emit "   echo unable to mount rootfs. Dropping to shell"
>+    emit "   /bin/msh"
>+    emit "fi"
>+else
>+    # Its an NFS root, mount it as such
>+    emit "if [ \"\$NETWORK_STATUS\" == \"down\" ]"
>+    emit "then"
>+    emit "  echo \"I need to bring up the network\""
>+    emit "  for i in \`ls /etc/ifcfg-*\`"
>+    emit "  do"
>+    emit "      NETDEV=\`echo \$i | cut -d\"-\" -f2\`"
>+    emit "      map_interface \$NETDEV"
>+    emit "  done"
>+    emit "  rename_interfaces"
>+    emit "  IFACE=\`cat /etc/iface_to_activate\`"
>+    emit "  ifup \$IFACE"
>+    emit "fi"
>+    emit "Mounting NFS root Filesystem"
>+    emit "mount -t nfs -o $ROOT_MOUNT_OPTS $ROOT_MOUNT_EXPORT /sysroot"
>+    emit "if [ \$? != 0 ]"
>+    emit "then"
>+    emit "  echo unable to mount rootfs.  dropping to shell. exit to reboot"
>+    emit "  /bin/msh"
>+    emit "  /sbin/reboot -f"
>+    emit "fi"
>+    
>+fi
> 
> emit "#move various filesystems and prime the rootfs to boot properly"
> emit "umount /proc"

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Attachments on bug 368941: 289925 | 289946 | 306796 | 308244 | 308358 | 313279 | 313280 | 313281 | 313282 | 313283