!76 fix scanning progress output

From: @cenhuilin 
Reviewed-by: @swf504 
Signed-off-by: @swf504

0002-bugfix-sg3_utils-fix-syntax-error.patch

@@ -29,7 +29,7 @@ index b1cbebc..25a5f2a 100755
      [ $RC = 2 ] && [ "$RMB" = "1" ] && break
    done
 -  if [ $ctr != 0 ] ; then
-+  if [ $xctr != x0 ] ; then
++  if [ "$ctr" != 0 ] ; then
      white_out
    fi
    # echo -e "\e[A\e[A\e[A${yellow}Test existence of $SGDEV = $RC ${norm} \n\n\n"

0004-sg3_utils-fix-memset-coredump.patch

@@ -1,29 +0,0 @@
-From dd2a61c9551ac5d2ac0c5902172fd8312edc22cb Mon Sep 17 00:00:00 2001
-From: yanglongkang <yanglongkang@huawei.com>
-Date: Tue, 9 Feb 2021 11:39:32 +0800
-Subject: [PATCH] sg3_utils: fix memset coredump
-
-alloc MX_ALLOC_LEN size mem to enc_stat_rsp for
-solving coredump problem.
-
-Signed-off-by: yanglongkang <yanglongkang@huawei.com>
----
- src/sg_ses.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/sg_ses.c b/src/sg_ses.c
-index 23fc3b9..cf344b7 100644
---- a/src/sg_ses.c
-+++ b/src/sg_ses.c
-@@ -5582,7 +5582,7 @@ main(int argc, char * argv[])
-         enumerate_work(op);
-         goto early_out;
-     }
--    enc_stat_rsp = sg_memalign(op->maxlen, 0, &free_enc_stat_rsp, false);
-+    enc_stat_rsp = sg_memalign(MX_ALLOC_LEN, 0, &free_enc_stat_rsp, false);
-     if (NULL == enc_stat_rsp) {
-         pr2serr("Unable to get heap for enc_stat_rsp\n");
-         goto err_out;
--- 
-1.8.3.1
-

0004-sg_ses-fix-crash-when-m-LEN-252.patch

@@ -0,0 +1,63 @@
+From bfbefdf2d9aa12107d08d796d6fc78862ab85402 Mon Sep 17 00:00:00 2001
+From: Douglas Gilbert <dgilbert@interlog.com>
+Date: Sun, 1 Aug 2021 03:14:05 +0000
+Subject: [PATCH] sg_ses: fix crash when 'm LEN' < 252
+
+git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@907 6180dd3e-e324-4e3e-922d-17de1ae2f315
+
+fix issue:https://gitee.com/src-openeuler/sg3_utils/issues/I5G05L
+
+memset enc_stat_rsp by its true length
+
+Signed-off-by: wangxiaomeng <wangxiaomeng@kylinos.cn>
+---
+ src/sg_ses.c               | 14 ++++++++------
+ 1 file changed, 8 insertions(+), 6 deletions(-)
+
+diff --git a/src/sg_ses.c b/src/sg_ses.c
+index b9ac2e4..701359b 100644
+--- a/src/sg_ses.c
++++ b/src/sg_ses.c
+@@ -5523,7 +5523,7 @@ int
+ main(int argc, char * argv[])
+ {
+     bool have_cgs = false;
+-    int k, d_len, res, resid, vb;
++    int k, n, d_len, res, resid, vb;
+     int sg_fd = -1;
+     int pd_type = 0;
+     int ret = 0;
+@@ -5757,15 +5757,17 @@ main(int argc, char * argv[])
+             }
+         }
+         clear_scsi_pt_obj(ptvp);
+-        memset(enc_stat_rsp, 0, 4096);
++        memset(enc_stat_rsp, 0, enc_stat_rsp_sz);
+     }
+ #endif
+ 
+     if (ptvp) {
+-        ret = sg_ll_request_sense_pt(ptvp, false, enc_stat_rsp,
+-                                     REQUEST_SENSE_RESP_SZ, ! op->quiet, vb);
++        n = (enc_stat_rsp_sz < REQUEST_SENSE_RESP_SZ) ? enc_stat_rsp_sz :
++                                                        REQUEST_SENSE_RESP_SZ;
++        ret = sg_ll_request_sense_pt(ptvp, false, enc_stat_rsp, n,
++                                     ! op->quiet, vb);
+         if (0 == ret) {
+-            int sense_len = REQUEST_SENSE_RESP_SZ - get_scsi_pt_resid(ptvp);
++            int sense_len = n - get_scsi_pt_resid(ptvp);
+             struct sg_scsi_sense_hdr ssh;
+ 
+             if ((sense_len > 7) && sg_scsi_normalize_sense(enc_stat_rsp,
+@@ -5794,7 +5796,7 @@ main(int argc, char * argv[])
+                         " problems ahead\n", ret);
+         }
+         clear_scsi_pt_obj(ptvp);
+-        memset(enc_stat_rsp, 0, REQUEST_SENSE_RESP_SZ);
++        memset(enc_stat_rsp, 0, enc_stat_rsp_sz);
+     }
+ 
+     if (op->nickname_str)
+-- 
+2.27.0
+

0006-rescan-scsi-bus-sgdevice26-do-not-traverse-sg-class-.patch

@@ -0,0 +1,57 @@
+From 4ea97e60c544ad44ee7396c815064d87f0d25874 Mon Sep 17 00:00:00 2001
+From: Douglas Gilbert <dgilbert@interlog.com>
+Date: Sun, 7 Aug 2022 02:49:03 +0000
+Subject: [PATCH] rescan-scsi-bus: sgdevice26: do not traverse sg class if
+ scsi_device isnot added
+
+For system which has a massive number of scsi_devices, it would takes a long time to
+traverse /sys/class/scsi_generic to find a related sg. If the scsi_device of specific
+scsiid host:channel:target:lun did not added, the traverse would find no sg neither.
+
+Signed-off-by: Wenchao Hao <haowenchao@huawei.com>
+
+From: https://github.com/doug-gilbert/sg3_utils/pull/21
+
+
+git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@965 6180dd3e-e324-4e3e-922d-17de1ae2f315
+---
+ scripts/rescan-scsi-bus.sh | 19 +++++++++++--------
+ 1 file changed, 11 insertions(+), 8 deletions(-)
+
+diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
+index 0c33384..f3e3b2c 100755
+--- a/scripts/rescan-scsi-bus.sh
++++ b/scripts/rescan-scsi-bus.sh
+@@ -184,18 +184,21 @@ sgdevice26 ()
+ {
+   local gendev
+ 
++  # if the scsi device has not been added, then there would not
++  # a related sgdev. So it's pointless to scan all sgs to find
++  # a related sg.
++  scsidev=/sys/class/scsi_device/${host}:${channel}:${id}:${lun}
++  if [ ! -e "$scsidev" ]; then
++    SGDEV=""
++    return
++  fi
++
+   gendev=/sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device/generic
+   if [ -e "$gendev" ] ; then
+     SGDEV=$(basename "$(readlink "$gendev")")
+-  else
+-    for SGDEV in /sys/class/scsi_generic/sg*; do
+-      DEV=$(readlink "$SGDEV/device")
+-      if [ "${DEV##*/}" = "$host:$channel:$id:$lun" ] ; then
+-        SGDEV=$(basename "$SGDEV"); return
+-      fi
+-    done
+-    SGDEV=""
++    return
+   fi
++  SGDEV=""
+ }
+ 
+ # Find sg device with 2.4 report-devs extensions
+-- 
+2.27.0
+

0007-rescan-scsi-bus.sh-add-option-no-lip-scan.patch

@@ -0,0 +1,62 @@
+From b109bf4c5bacf65d32d2ab4fb990efb5230fda27 Mon Sep 17 00:00:00 2001
+From: Douglas Gilbert <dgilbert@interlog.com>
+Date: Fri, 12 Aug 2022 02:55:43 +0000
+Subject: [PATCH] rescan-scsi-bus.sh: add option --no-lip-scan
+
+lip is a FC operation and can be used to rescan device but it can not
+specify the channel and target. So add a new option to scan FC hosts
+according to the SCSI general interface in sysfs:
+/sys/class/scsi_host/hostX/scan.
+
+The default value of no_lip_scan is 0 which does not change the
+default behavior.
+
+Fix https://github.com/doug-gilbert/sg3_utils/issues/20
+
+Signed-off-by: Wenchao Hao <haowenchao@huawei.com>
+
+git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@967 6180dd3e-e324-4e3e-922d-17de1ae2f315
+---
+ scripts/rescan-scsi-bus.sh | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
+index 31ae736..67dccf3 100755
+--- a/scripts/rescan-scsi-bus.sh
++++ b/scripts/rescan-scsi-bus.sh
+@@ -1158,6 +1158,7 @@ if [ "@$1" = @--help ] || [ "@$1" = @-h ] || [ "@$1" = "@-?" ] ; then
+     echo "--largelun:      Tell kernel to support LUNs > 7 even on SCSI2 devs"
+     echo "--luns=LIST:     Scan only lun(s) in LIST"
+     echo "--multipath:     same as -m"
++    echo "--no-lip-scan:   don't scan FC Host with issue-lip"
+     echo "--nooptscan:     don't stop looking for LUNs if 0 is not found"
+     echo "--remove:        same as -r"
+     echo "--reportlun2:    Tell kernel to try REPORT_LUN even on SCSI2 devices"
+@@ -1226,6 +1227,7 @@ mp_enable=
+ lipreset=-1
+ declare -i scan_flags=0
+ ignore_rev=0
++no_lip_scan=0
+ 
+ # Scan options
+ opt="$1"
+@@ -1260,6 +1262,7 @@ while [ ! -z "$opt" ] && [ -z "${opt##-*}" ] ; do
+     -largelun) scan_flags=$((scan_flags|0x200)) ;;
+     -luns=*)  arg=${opt#-luns=};        lunsearch=$(expandlist "$arg") ;;
+     -multipath) mp_enable=1 ;;
++    -no-lip-scan) no_lip_scan=1 ;;
+     -nooptscan) optscan=0 ;;
+     -nosync) sync=0 ;;
+     -remove)      remove=1 ;;
+@@ -1337,7 +1340,7 @@ elif [ $resize -eq 1 ] ; then
+ else
+   for host in $hosts; do
+   echo -n "Scanning host $host "
+-  if [ -e "/sys/class/fc_host/host$host" ] ; then
++  if [ $no_lip_scan -eq 0 ] && [ -e "/sys/class/fc_host/host$host" ] ; then
+     # It's pointless to do a target scan on FC
+     issue_lip=/sys/class/fc_host/host$host/issue_lip
+     if [ -e "$issue_lip" ] && [ "$lipreset" -ge 0 ] ; then
+-- 
+2.27.0
+

0008-rescan-scsi-bus.sh-speed-testonline.patch

@@ -0,0 +1,33 @@
+From e680e840140d19cb3419ff92595bc2c91de3368a Mon Sep 17 00:00:00 2001
+From: Douglas Gilbert <dgilbert@interlog.com>
+Date: Mon, 26 Sep 2022 21:41:45 +0000
+Subject: [PATCH 1/2] rescan-scsi-bus.sh speed testonline()
+
+speed testonline() function when
+peripheral_qualifier != 0 in the standard INQUIRY
+response. See:
+https://github.com/doug-gilbert/sg3_utils/issues/24
+
+git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@972 6180dd3e-e324-4e3e-922d-17de1ae2f315
+
+Conflict: Reserve changes about rescan-scsi-bus only
+---
+ scripts/rescan-scsi-bus.sh | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
+index 67dccf3..0e7697b 100755
+--- a/scripts/rescan-scsi-bus.sh
++++ b/scripts/rescan-scsi-bus.sh
+@@ -276,7 +276,7 @@ testonline ()
+ 
+   # Handle in progress of becoming ready and unit attention
+   while [ $RC = 2 -o $RC = 6 ] && [ $ctr -le 30 ] ; do
+-    if [ $RC = 2 ] && [ "$RMB" != "1" ] ; then
++    if [ $RC = 2 ] && [ "$RMB" != "1" ] && [ sg_inq /dev/$SGDEV | grep -q -i "PQual=0" ] ; then
+       echo -n "."
+       let LN+=1
+       sleep 1
+-- 
+2.35.3
+

0009-rescan-scsi-bus-speed-large-multipath-scans.patch

@@ -0,0 +1,130 @@
+From fe62f3e9ce96927bf9bcfb19b33447b54aafdc1f Mon Sep 17 00:00:00 2001
+From: Douglas Gilbert <dgilbert@interlog.com>
+Date: Fri, 30 Sep 2022 08:58:39 +0000
+Subject: [PATCH 2/2] rescan-scsi-bus: speed large multipath scans
+
+Speed multipath scans with many LUNs by caching multipath
+LUN info in temporary file, see:
+   https://github.com/doug-gilbert/sg3_utils/issues/22
+Fix small bug in last commit, see:
+   https://github.com/doug-gilbert/sg3_utils/issues/24
+
+git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@973 6180dd3e-e324-4e3e-922d-17de1ae2f315
+
+Conflict: reserve changes about rescan-scsi-bus only
+---
+ scripts/rescan-scsi-bus.sh | 57 ++++++++++++++++++++++++++------------
+ 1 file changed, 40 insertions(+), 17 deletions(-)
+
+diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
+index 0e7697b..7508dba 100755
+--- a/scripts/rescan-scsi-bus.sh
++++ b/scripts/rescan-scsi-bus.sh
+@@ -6,6 +6,7 @@
+ 
+ VERSION="20180615"
+ SCAN_WILD_CARD=4294967295
++TMPLUNINFOFILE="/tmp/rescan-scsi-mpath-info.txt"
+ 
+ setcolor ()
+ {
+@@ -276,7 +277,7 @@ testonline ()
+ 
+   # Handle in progress of becoming ready and unit attention
+   while [ $RC = 2 -o $RC = 6 ] && [ $ctr -le 30 ] ; do
+-    if [ $RC = 2 ] && [ "$RMB" != "1" ] && [ sg_inq /dev/$SGDEV | grep -q -i "PQual=0" ] ; then
++    if [ $RC = 2 ] && [ "$RMB" != "1" ] && sg_inq /dev/$SGDEV | grep -q -i "PQual=0" ; then
+       echo -n "."
+       let LN+=1
+       sleep 1
+@@ -777,6 +778,33 @@ searchexisting()
+   done
+ }
+ 
++getallmultipathinfo()
++{
++  local mp=
++  local uuid=
++  local dmtmp=
++  local maj_min=
++  local tmpfile=
++
++  truncate -s 0 $TMPLUNINFOFILE
++  for mp in $($DMSETUP ls --target=multipath | cut -f 1) ; do
++    [ "$mp" = "No" ] && break;
++    maj_min=$($DMSETUP status "$mp" | cut -d  " " -f14)
++    if [ ! -L /dev/mapper/${mp} ]; then
++      echo "softlink /dev/mapper/${mp} not available."
++      continue
++    fi
++    local ret=$(readlink /dev/mapper/$mp 2>/dev/null)
++    if [[ $? -ne 0 || -z "$ret" ]]; then
++      echo "readlink /dev/mapper/$mp failed. check multipath status."
++      continue
++    fi
++    dmtmp=$(basename $ret)
++    uuid=$(cut -f2 -d- "/sys/block/$dmtmp/dm/uuid")
++    echo "$mp $maj_min $dmtmp $uuid" >> $TMPLUNINFOFILE
++  done
++}
++
+ # Go through all of the existing devices and figure out any that have been remapped
+ findremapped()
+ {
+@@ -815,6 +843,8 @@ findremapped()
+   udevadm_settle 2>&1 /dev/null
+   echo "Done"
+ 
++  getallmultipathinfo
++
+   # See what changed and reload the respective multipath device if applicable
+   while read -r hctl sddev id_serial_old ; do
+     remapped=0
+@@ -945,7 +975,6 @@ findmultipath()
+   local dev="$1"
+   local find_mismatch="$2"
+   local mp=
+-  local mp2=
+   local found_dup=0
+   local maj_min=
+ 
+@@ -955,27 +984,21 @@ findmultipath()
+   fi
+ 
+   maj_min=$(cat "/sys/block/$dev/dev")
+-  for mp in $($DMSETUP ls --target=multipath | cut -f 1) ; do
+-    [ "$mp" = "No" ] && break;
+-    if "$DMSETUP" status "$mp" | grep -q " $maj_min "; then
+-      # With two arguments, look up current uuid from sysfs
+-      # if it doesn't match what was passed, this multipath
+-      # device is not updated, so this is a remapped LUN
+-      if [ -n "$find_mismatch" ] ; then
+-        mp2=$($MULTIPATH -l "$mp" | egrep -o "dm-[0-9]+")
+-        mp2=$(cut -f2 -d- "/sys/block/$mp2/dm/uuid")
+-        if [ "$find_mismatch" != "$mp2" ] ; then
+-          addmpathtolist "$mp"
+-          found_dup=1
+-        fi
+-        continue
++  mp=$(cat $TMPLUNINFOFILE | grep -w "$maj_min" | cut -d " " -f1)
++  if [ -n "$mp" ]; then
++    if [ -n "$find_mismatch" ] ; then
++      uuid=$(cat $TMPLUNINFOFILE | grep -w "$maj_min" | cut -d " " -f4)
++      if [ "$find_mismatch" != "$uuid" ] ; then
++        addmpathtolist "$mp"
++        found_dup=1
+       fi
++    else
+       # Normal mode: Find the first multipath with the sdev
+       # and add it to the list
+       addmpathtolist "$mp"
+       return
+     fi
+-  done
++  fi
+ 
+   # Return 1 to signal that a duplicate was found to the calling function
+   if [ $found_dup -eq 1 ] ; then
+-- 
+2.35.3
+

0010-rescan-scsi-bus.sh_seq_-s.patch

@@ -0,0 +1,71 @@
+From 9133ef2803353176da50b57be8365fe07ac3faea Mon Sep 17 00:00:00 2001
+From: Douglas Gilbert <dgilbert@interlog.com>
+Date: Wed, 20 Mar 2024 10:24:11 +0800
+Subject: [PATCH] rescan-scsi-bus.sh: Use "seq -s"
+
+Since the commit [git: 8c86fe2; svn rev 815  "library: add to '.so' name;
+rescan-scsi-bus: multiple patches to sync with Suse], we correctly use
+quoting when we print $idsearch or $lunsearch. This causes a change in
+the output of the script, because these number lists are generated by
+the GNU seq utility, which uses "\n" as default separator, and the
+quoting now causes the newlines to be preserved. Use "seq -s" to
+generate space-separated lists instead.
+
+
+
+git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@936 6180dd3e-e324-4e3e-922d-17de1ae2f315
+---
+ scripts/rescan-scsi-bus.sh | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
+index 88dab7c..60c7d15 100755
+--- a/scripts/rescan-scsi-bus.sh
++++ b/scripts/rescan-scsi-bus.sh
+@@ -714,7 +714,7 @@ expandlist ()
+       result="$result $beg";
+     else
+       end=${first#*-}
+-      result="$result $(seq $beg $end)"
++      result="$result $(seq -s ' ' $beg $end)"
+     fi
+     [ "$rest" = "$first" ] && rest=""
+     first=${rest%%,*}
+@@ -1229,7 +1229,7 @@ fi
+ unsetcolor
+ debug=0
+ lunsearch=
+-opt_idsearch=$(seq 0 7)
++opt_idsearch=$(seq -s ' ' 0 7)
+ filter_ids=0
+ opt_channelsearch=
+ remove=
+@@ -1257,13 +1257,13 @@ while [ ! -z "$opt" ] && [ -z "${opt##-*}" ] ; do
+     f) flush=1 ;;
+     i) lipreset=0 ;;
+     I) shift; lipreset=$opt ;;
+-    l) lunsearch=$(seq 0 7) ;;
+-    L) lunsearch=$(seq 0 "$2"); shift ;;
++    l) lunsearch=$(seq -s ' ' 0 7) ;;
++    L) lunsearch=$(seq -s ' ' 0 "$2"); shift ;;
+     m) mp_enable=1 ;;
+     r) remove=1 ;;
+     s) resize=1; mp_enable=1 ;;
+     u) update=1 ;;
+-    w) opt_idsearch=$(seq 0 15) ;;
++    w) opt_idsearch=$(seq -s ' ' 0 15) ;;
+     -alltargets)  existing_targets=;;
+     -attachpq3) scan_flags=$((scan_flags|0x1000000)) ;;
+     -channels=*)  arg=${opt#-channels=};opt_channelsearch=$(expandlist "$arg") ;;
+@@ -1288,7 +1288,7 @@ while [ ! -z "$opt" ] && [ -z "${opt##-*}" ] ; do
+     -sparselun) scan_flags=$((scan_flags|0x40)) ;;
+     -sync) sync=2 ;;
+     -update) update=1;;
+-    -wide) opt_idsearch=$(seq 0 15) ;;
++    -wide) opt_idsearch=$(seq -s ' ' 0 15) ;;
+     *) echo "Unknown option -$opt !" ;;
+   esac
+   shift
+-- 
+2.27.0
+

sg3_utils.spec

@@ -1,6 +1,6 @@
 Name:    sg3_utils
 Version: 1.45
-Release: 7
+Release: 12
 Summary: Utilities that send SCSI commands to devices.
 License: GPL-2.0-or-later AND BSD
 URL:     http://sg.danny.cz/sg/sg3_utils.html
@@ -10,8 +10,13 @@ Patch0: 0000-sg3_utils-1.37-rescan-scsi-findremapped-enhance.patch
 Patch1: 0001-sg3_utils-1.37-rescan-downpress.patch
 Patch2: 0002-bugfix-sg3_utils-fix-syntax-error.patch
 Patch3: 0003-sg3_utils-1.42-delete-lun-rescan-scsi-bus-report-error.patch
-Patch4:	0004-sg3_utils-fix-memset-coredump.patch
+Patch4:	0004-sg_ses-fix-crash-when-m-LEN-252.patch
 Patch5: 0005-sg3_utils-rescan-scsi-bus-list-all-LUNs-in-one-line.patch
+Patch6: 0006-rescan-scsi-bus-sgdevice26-do-not-traverse-sg-class-.patch
+Patch7: 0007-rescan-scsi-bus.sh-add-option-no-lip-scan.patch
+Patch8: 0008-rescan-scsi-bus.sh-speed-testonline.patch
+Patch9: 0009-rescan-scsi-bus-speed-large-multipath-scans.patch
+Patch10: 0010-rescan-scsi-bus.sh_seq_-s.patch
 
 Provides:      %{name}-libs
 Obsoletes:     %{name}-libs
@@ -75,6 +80,21 @@ rm -rf $RPM_BUILD_ROOT/%{_libdir}/*.la
 %{_mandir}/man8/*
 
 %changelog
+* Wed Mar 20 2024 cenhuilin <cenhuilin@kylinos.cn> - 1.45-12
+- fix scanning progress output
+
+* Wed Nov 29 2023 wuguanghao <wuguanghao3@huawei.com> - 1.45-11
+- fix rescan-scsi-bus.sh syntax error
+
+* Fri Nov 4 2022 Zhiqiang Liu <liuzhiqiang26@huawei.com> - 1.45-10
+- backport speed multipath scan patches from mainline
+
+* Fri Sep 2 2022 Wenchao Hao <haowenchao@huawei.com> - 1.45-9
+- backport rescan-scsi-bus patches from mainline
+
+* Fri Jul 8 2022 wangxiaomeng <wangxiaomeng@kylinos.cn> - 1.45-8
+- Backport patch to solve coredump problem, fix crash when 'm LEN' < 252
+
 * Sat Jan 29 2022 Zhiqiang Liu <liuzhiqiang26@huawei.com> - 1.45-7
 - rescan scsi bus list all LUNs in one line