Changeset 3119 in MondoRescue for branches/3.0/mindi/rootfs/etc/init.d/rcS

Timestamp:

May 10, 2013, 8:54:24 PM (11 years ago)

Author:

Bruno Cornec

Message:

r5281@localhost: bruno | 2013-05-08 11:56:49 +0200

• Fix support for OBDR tapes on SCSI cards: in some cases the tape remains in OBDR mode (aka CDROM emulation) preventing the init script to work correctly. It now try to detect these cases, and to reset the SCSI device being of type CDROM (5) and looking like a tape drive as a model. (Not tested yet)
• Improve in consequence the OBDR specific README
• Adds support for the obdrmods boot parameter if some additional drivers should be removed
• adds rev to the minimal list of tools to have as this is now potentially required

File:

• branches/3.0/mindi/rootfs/etc/init.d/rcS (modified) (2 diffs)

branches/3.0/mindi/rootfs/etc/init.d/rcS

@@ -142 +142 @@
     [ ! "$tapedev" ] && tapedev=`grep media-dev /tmp/mondo-restore.cfg 2>/dev/null | tr -s ' ' ' ' | cut -d' ' -f2`
     mt -f $tapedev rewind
+    if [ $? -ne 0 ]; then
+        LogIt "WARNING: $tapedev failed to rewind, either not a tape or still in OBDR mode." 1
+        LogIt "         Trying to find the corresponding SCSI generic device." 1
+        c=0
+        for d in `ls /sys/class/scsi_device/*`; do
+            devtype=`cat $d/device/type`
+            if [ _"$devtype" -eq _"1" ]; then
+                LogIt "NOTE: Device /dev/sg$c is a Sequential device." 1
+                if [ -x /usr/bin/sg_map ]; then
+                    dev=`/usr/bin/sg_map | grep -E "^/dev/sg$c" | awk '{print $2}'`
+                    LogIt "      Retry using device $dev" 1
+                fi
+            elif [ _"$devtype" -eq _"0" ]; then
+                # Skipping a HDD
+            elif [ _"$devtype" -eq _"5" ]; then
+                # Checking whether it's a CD or a tape in OBDR mode
+                grep -q -i -E 'dat|ultrium|tape' $d/device/model
+                if [ $? -eq 0 ]; then
+                    # Is probably a Tape drive left in OBDR.
+                    LogIt "Found that /dev/sg$c is a tape drive (`cat $d/device/model`)." 1
+                    grep -q -i -w 'hp' $d/device/vendor
+                    if [ $? -eq 0 ]; then
+                        LogIt "This is an HP tape drive, even better :-)." 1
+                    fi
+                    if [ -x /usr/bin/sg_reset ]; then
+                        OBDR_MODS="st mptsas mptspi aic7xxx aic94xx mpt2sas "
+                        if [ "`grep -i obdrmods /proc/cmdline`" ]; then
+                            OBDR_MODS="$OBDR_MODS `cat /proc/cmdline | sed 's~.*obdrmods=\"\(.*\)\".*~\1~'`"
+                        fi
+                        LogIt "Removing modules $OBDR_MODS." 1
+                        for m in $OBDR_MODS; do
+                            rmmod $i
+                        done
+                        LogIt "Trying to force device /dev/sg$c to be in sequential mode." 1
+                        /usr/bin/sg_reset -d /dev/sg$c
+                        LogIt "Inserting modules `rev $OBDR_MODS`." 1
+                        for m in `rev $OBDR_MODS`; do
+                            modprobe $i
+                        done
+                        LogIt "Retry again as the device has been set back into sequential mode." 1
+                        mt -f $tapedev fsf 2
+                        res=$?
+                        # exit the loop to continue and return if that previous mt failed. 
+                        # If it succeeded we transparently continue !!
+                        break
+                    else
+                        LogIt "WARNING: Unable to reset /dev/sg$c as the sg_reset command is not availble." 1
+                    fi
+                fi
+            else 
+                LogIt "Device /dev/sg$c has an unknown type $devtype." 1
+            fi
+            c=`expr $c + 1`
+        done
+
+        if [ $res -ne 0 ]; then
+            cd $old_pwd
+            return $res
+        fi
+    fi
+
     mt -f $tapedev fsf 2
     # 32k is DEFAULT_INTERNAL_TAPE_BLOCK_SIZE
@@ -667 +728 @@
 }
 
-
 EnableCcissIfAppropriate() {
     local f