diff options
Diffstat (limited to 'source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh')
| -rw-r--r-- | source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh | 96 |
1 files changed, 71 insertions, 25 deletions
diff --git a/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh b/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh index 5ef34d4d8..0bfca50d1 100644 --- a/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh +++ b/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh @@ -1,9 +1,11 @@ #!/bin/bash # Skript to rescan SCSI bus, using the # scsi add-single-device mechanism -# (c) 1998--2008 Kurt Garloff <kurt@garloff.de>, GNU GPL v2 or later +# (c) 1998--2010 Kurt Garloff <kurt@garloff.de>, GNU GPL v2 or v3 # (c) 2006--2008 Hannes Reinecke, GNU GPL v2 or later -# $Id: rescan-scsi-bus.sh,v 1.48 2010/08/10 19:32:22 garloff Exp $ +# $Id: rescan-scsi-bus.sh,v 1.56 2012/01/14 22:23:53 garloff Exp $ + +SCAN_WILD_CARD=4294967295 setcolor () { @@ -47,8 +49,9 @@ white_out () # Return hosts. sysfs must be mounted findhosts_26 () { - hosts= - for hostdir in /sys/class/scsi_host/host*; do + hosts=`find /sys/class/scsi_host/host* -maxdepth 4 -type d -o -type l 2> /dev/null | awk -F'/' '{print $5}' | sed -e 's~host~~' | sort -nu` + scsi_host_data=`echo "$hosts" | sed -e 's~^~/sys/class/scsi_host/host~'` + for hostdir in $scsi_host_data; do hostno=${hostdir#/sys/class/scsi_host/host} if [ -f $hostdir/isp_name ] ; then hostname="qla2xxx" @@ -57,14 +60,15 @@ findhosts_26 () else hostname=`cat $hostdir/proc_name` fi - hosts="$hosts $hostno" + #hosts="$hosts $hostno" echo "Host adapter $hostno ($hostname) found." done if [ -z "$hosts" ] ; then echo "No SCSI host adapters found in sysfs" exit 1; fi - hosts=`echo $hosts | sed 's/ /\n/g' | sort -n` + # Not necessary just use double quotes around variable to preserve new lines + #hosts=`echo $hosts | tr ' ' '\n'` } # Return hosts. /proc/scsi/HOSTADAPTER/? must exist @@ -337,11 +341,22 @@ idlist () getluns() { sgdevice - if test -z "$SGDEV"; then return; fi - if test ! -x /usr/bin/sg_luns; then echo 0; return; fi - LLUN=`sg_luns -d /dev/$SGDEV 2>/dev/null` - if test $? != 0; then echo 0; return; fi - echo "$LLUN" | sed -n 's/.*lun=\(.*\)/\1/p' + if test -z "$SGDEV"; then return 1; fi + if test ! -x /usr/bin/sg_luns; then echo 0; return 1; fi + LLUN=`sg_luns /dev/$SGDEV 2>/dev/null | sed -n 's/ \(.*\)/\1/p'` + if test $? != 0; then echo 0; return 1; fi + #echo "$LLUN" | sed -n 's/.*lun=\(.*\)/\1/p' + for lun in $LLUN ; do + # Swap LUN number + l0=$(printf '%u' 0x$lun) + l1=$(( ($l0 >> 48) & 0xffff )) + l2=$(( ($l0 >> 32) & 0xffff )) + l3=$(( ($l0 >> 16) & 0xffff )) + l4=$(( $l0 & 0xffff )) + l0=$(( ( ( ($l4 * 0xffff) + $l3 ) * 0xffff + $l2 ) * 0xffff + $l1 )) + printf "%u\n" $l0 + done + return 0 } # Wait for udev to settle (create device nodes etc.) @@ -351,6 +366,10 @@ udevadm_settle() print_and_scroll_back " Calling udevadm settle (can take a while) " /sbin/udevadm settle white_out + elif test -x /sbin/udevsettle; then + print_and_scroll_back " Calling udevsettle (can take a while) " + /sbin/udevsettle + white_out else usleep 20000 fi @@ -361,7 +380,7 @@ dolunscan() { SCSISTR= devnr="$host $channel $id $lun" - echo "Scanning for device $devnr ... " + echo -e " Scanning for device $devnr ... " printf "${yellow}OLD: $norm" testexist # Special case: lun 0 just got added (for reportlunscan), @@ -382,10 +401,6 @@ dolunscan() echo -e "${norm}\e[B\e[B" if test -e /sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device; then echo 1 > /sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device/delete - if test $RC -eq 1 -o $lun -eq 0 ; then - # Try readding, should fail if device is gone - echo "$channel $id $lun" > /sys/class/scsi_host/host${host}/scan - fi # FIXME: Can we skip udevadm settle for removal? #udevadm_settle usleep 20000 @@ -440,7 +455,7 @@ doreportlun() lun=0 SCSISTR= devnr="$host $channel $id $lun" - echo -en "Scanning for device $devnr ...\r" + echo -en " Scanning for device $devnr ...\r" lun0added= #printf "${yellow}OLD: $norm" # Phase one: If LUN0 does not exist, try to add @@ -470,10 +485,31 @@ doreportlun() fi fi targetluns=`getluns` + REPLUNSTAT=$? lunremove= #echo "getluns reports " $targetluns + olddev=`find /sys/class/scsi_device/ -name $host:$channel:$id:* 2>/dev/null` + oldluns=`echo "$olddev" | awk -F'/' '{print $5}' | awk -F':' '{print $4}'` + oldtargets="$targetluns" + # OK -- if we don't have a LUN to send a REPORT_LUNS to, we could + # fall back to wildcard scanning. Same thing if the device does not + # support REPORT_LUNS + # TODO: We might be better off to ALWAYS use wildcard scanning if + # it works + if test "$REPLUNSTAT" = "1"; then + if test -e /sys/class/scsi_host/host${host}/scan; then + echo "$channel $id -" > /sys/class/scsi_host/host${host}/scan 2> /dev/null + udevadm_settle + else + echo "scsi add-single-device $host $channel $id $SCAN_WILD_CARD" > /proc/scsi/scsi + fi + targetluns=`find /sys/class/scsi_device/ -name $host:$channel:$id:* 2>/dev/null | awk -F'/' '{print $5}' | awk -F':' '{print $4}' | sort -n` + let found+=`echo "$targetluns" | wc -l` + let found-=`echo "$olddev" | wc -l` + fi + if test -z "$targetluns"; then targetluns="$oldtargets"; fi # Check existing luns - for dev in /sys/class/scsi_device/${host}:${channel}:${id}:*; do + for dev in $olddev; do [ -d "$dev" ] || continue lun=${dev##*:} newsearch= @@ -589,11 +625,14 @@ if test -x /usr/bin/sg_inq; then sg_version=$(sg_inq -V 2>&1 | cut -d " " -f 3) sg_version=${sg_version##0.} #echo "\"$sg_version\"" - if [ -z "$sg_version" -o "$sg_version" -lt 70 ] ; then - sg_len_arg="-36" - else + #if [ -z "$sg_version" -o "$sg_version" -lt 70 ] ; then + #sg_len_arg="-36" + #else sg_len_arg="--len=36" - fi + #fi +else + echo "WARN: /usr/bin/sg_inq not present -- please install sg3_utils" + echo " or rescan-scsi-bus.sh might not fully work." fi # defaults @@ -677,12 +716,15 @@ for host in $hosts; do # It's pointless to do a target scan on FC if test -n "$lipreset" ; then echo 1 > /sys/class/fc_host/host$host/issue_lip 2> /dev/null; + udevadm_settle fi - # Always trigger a rescan for FC to update channels and targets - echo "- - -" > /sys/class/scsi_host/host$host/scan 2> /dev/null; + # We used to always trigger a rescan for FC to update channels and targets + # Commented out -- as discussed with Hannes we should rely + # on the main loop doing the scan, no need to do it here. + #echo "- - -" > /sys/class/scsi_host/host$host/scan 2> /dev/null; + #udevadm_settle channelsearch= idsearch= - udevadm_settle else channelsearch=$opt_channelsearch idsearch=$opt_idsearch @@ -707,3 +749,7 @@ fi echo "$found new device(s) found. " echo "$rmvd device(s) removed. " +# Local Variables: +# sh-basic-offset: 2 +# End: + |